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  <front>
    <journal-meta>
      <journal-id journal-id-type="nlm-ta">Arq Bras Cardiol</journal-id>
      <journal-title-group>
        <journal-title>Arquivos Brasileiros de Cardiologia</journal-title>
        <abbrev-journal-title abbrev-type="publisher">Arq. Bras. Cardiol.</abbrev-journal-title>
      </journal-title-group>
      <issn pub-type="ppub">0066-782X</issn>
      <issn pub-type="epub">1678-4170</issn>
      <publisher>
        <publisher-name>Sociedade Brasileira de Cardiologia</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="publisher-id" specific-use="scielo-v3">r6gs38cLGGHJ8qj5FPkKBPk</article-id>
      <article-id pub-id-type="publisher-id" specific-use="scielo-v2">S0066-782X2014002300001</article-id>
      <article-id pub-id-type="other">00001</article-id>
      <article-id pub-id-type="doi">10.5935/abc.20140186</article-id>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Editorial</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Cardiovascular Computed Tomography and Magnetic Resonance: History and
               Growing Impact in Brazil and in the World</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Nacif</surname>
            <given-names>Marcelo Souto</given-names>
          </name>
          <xref ref-type="aff" rid="aff01">1</xref>
          <xref ref-type="aff" rid="aff02">2</xref>
          <xref ref-type="corresp" rid="c01"/>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Rochitte</surname>
            <given-names>Carlos Eduardo</given-names>
          </name>
          <xref ref-type="aff" rid="aff03">3</xref>
          <xref ref-type="aff" rid="aff04">4</xref>
          <xref ref-type="aff" rid="aff05">5</xref>
        </contrib>
      </contrib-group>
      <aff id="aff01">
        <label>1</label>
        <institution content-type="orgname">Hospital Universit&#225;rio Ant&#244;nio Pedro</institution>
        <institution content-type="orgdiv1">Setor de Resson&#226;ncia Magn&#233;tica e Tomografia
               Computadorizada Cardiovascular</institution>
        <addr-line>
          <named-content content-type="city">Niter&#243;i</named-content>
          <named-content content-type="state">RJ</named-content>
        </addr-line>
        <country>Brazil</country>
        <institution content-type="original">Hospital Universit&#225;rio Ant&#244;nio Pedro - HUAP - Setor
               de Resson&#226;ncia Magn&#233;tica e Tomografia Computadorizada Cardiovascular, Niter&#243;i, RJ,
               Brazil</institution>
      </aff>
      <aff id="aff02">
        <label>2</label>
        <institution content-type="orgname">Universidade Federal Fluminense</institution>
        <institution content-type="orgdiv1">P&#243;s-gradua&#231;&#227;o em Ci&#234;ncias
               Cardiovasculares</institution>
        <addr-line>
          <named-content content-type="city">Niter&#243;i</named-content>
          <named-content content-type="state">RJ</named-content>
        </addr-line>
        <country>Brazil</country>
        <institution content-type="original">P&#243;s-gradua&#231;&#227;o em Ci&#234;ncias Cardiovasculares -
               Universidade Federal Fluminense - UFF, Niter&#243;i, RJ - Brazil</institution>
      </aff>
      <aff id="aff03">
        <label>3</label>
        <institution content-type="orgname">Instituto do Cora&#231;&#227;o</institution>
        <institution content-type="orgdiv1">Setor de Resson&#226;ncia Magn&#233;tica e Tomografia
               Computadorizada Cardiovascular</institution>
        <addr-line>
          <named-content content-type="city">S&#227;o Paulo</named-content>
          <named-content content-type="state">SP</named-content>
        </addr-line>
        <country>Brazil</country>
        <institution content-type="original">Instituto do Cora&#231;&#227;o - InCor - Setor de Resson&#226;ncia
               Magn&#233;tica e Tomografia Computadorizada Cardiovascular, S&#227;o Paulo, SP -
               Brazil</institution>
      </aff>
      <aff id="aff04">
        <label>4</label>
        <institution content-type="orgname">Hospital do Cora&#231;&#227;o</institution>
        <institution content-type="orgdiv1">Associa&#231;&#227;o do Sanat&#243;rio S&#237;rio</institution>
        <addr-line>
          <named-content content-type="city">S&#227;o Paulo</named-content>
          <named-content content-type="state">SP</named-content>
        </addr-line>
        <country>Brazil</country>
        <institution content-type="original">Hospital do Cora&#231;&#227;o &#8211; HCOR - Associa&#231;&#227;o do
               Sanat&#243;rio S&#237;rio, S&#227;o Paulo, SP - Brazil</institution>
      </aff>
      <aff id="aff05">
        <label>5</label>
        <institution content-type="orgname">Hospital Pro-card&#237;aco</institution>
        <addr-line>
          <named-content content-type="city">Rio de Janeiro</named-content>
          <named-content content-type="state">RJ</named-content>
        </addr-line>
        <country>Brazil</country>
        <institution content-type="original">Hospital Pro-card&#237;aco - Rio de Janeiro, RJ -
               Brazil</institution>
      </aff>
      <author-notes>
        <corresp id="c01"><bold>Mailing Address: Marcelo Souto Nacif</bold>. Av. S&#227;o Jo&#227;o, 2400
               &#8211; 232b. Jd Colinas, Postal Code 12242-000, S&#227;o Jos&#233; dos Campos, SP - Brazil. E-mail &#8211;
                  <email>msnacif@gmail.com</email></corresp>
      </author-notes>
      <pub-date pub-type="epub-ppub">
        <month>11</month>
        <year>2014</year>
      </pub-date>
      <volume>103</volume>
      <issue>5</issue>
      <fpage>362</fpage>
      <lpage>367</lpage>
      <permissions>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by-nc/3.0/">
          <license-p>This is an Open Access article distributed under the terms of the Creative
                  Commons Attribution Non-Commercial License which permits unrestricted
                  non-commercial use, distribution, and reproduction in any medium, provided the
                  original work is properly cited.</license-p>
        </license>
      </permissions>
      <kwd-group xml:lang="en">
        <kwd>Tomography, X-Ray Computed/history</kwd>
        <kwd>Tomography,X-Ray Computed/trends</kwd>
        <kwd>Diagnostic Imaging/trends</kwd>
        <kwd>Diagnostic Imaging/history</kwd>
        <kwd>Magnetic Resonance Spectroscopy/history</kwd>
      </kwd-group>
      <counts>
        <fig-count count="4"/>
        <table-count count="0"/>
        <equation-count count="0"/>
        <ref-count count="90"/>
        <page-count count="6"/>
      </counts>
    </article-meta>
  </front>
  <body>
    <sec>
      <title>Growth in Brazil and in the World</title>
      <p>Cardiovascular computed tomography and magnetic resonance are an important topic within
            the area of cardiovascular imaging in Brazil and in the world. In the <italic>Arquivos
               Brasileiros de Cardiologia</italic> this is not different, and despite the increased
            focus in clinical study, these two topics have grown in impact and scientific
            publications in recent years.</p>
      <p>It is notorious the expansion of the national technological park with entrance of
            countless devices capable of performing advanced studies using cardiovascular tomography
            and magnetic resonance with increasing impetus for opening more centers specialized in
            these methods.</p>
      <p>When we perform a systematic review using EndNote as a search tool and select only
            PubMed as a database with the words "magnetic resonance" and "computed tomography", in
            the <italic>Arquivos Brasileiros de Cardiologia</italic> alone we observe a total of 182
            studies (<xref ref-type="fig" rid="f01">Figure 1</xref>).</p>
      <fig id="f01" fig-type="other">
        <label>Figure 1</label>
        <caption>
          <title>Number of publications in the Arquivos Brasileiros de Cardiologia with
                  exclusive focus on cardiovascular computed tomography and magnetic
                  resonance.</title>
        </caption>
        <graphic xlink:href="1678-4170-abc-103-05-0362-40186-gf01.jpg"/></fig>
      <p>In parallel, when we perform a search on PubMed using the word "cardiac" and the MeSH
            (Medical Subject Headings) terms "computed tomography" and "magnetic resonance imaging",
            we find a sum of publications close to 45 thousand articles (44,711 articles) (<xref ref-type="fig" rid="f02">Figure 2</xref>).</p>
      <fig id="f02" fig-type="other">
        <label>Figure 2</label>
        <caption>
          <title>Number of publications in PubMed with exclusive focus on cardiovascular
                  computed tomography and magnetic resonance.</title>
        </caption>
        <graphic xlink:href="1678-4170-abc-103-05-0362-40186-gf02.jpg"/></fig>
      <p>These graphics turn out to be merely illustrative, but are without doubt markers of the
            impact of these methods in Brazil (<xref ref-type="fig" rid="f01">Figure 1</xref>) and
            in the world (<xref ref-type="fig" rid="f02">Figure 2</xref>). It is easy to identify
            that after the year 2000 and in the last decade there has been a large insertion of
            these methods in the scientific scenario and we believe that this reflects also in the
            clinical scenario.</p>
    </sec>
    <sec>
      <title>History in the <italic>Arquivos Brasileiros de Cardiologia</italic></title>
      <p>The first studies published in the <italic>Arquivos Brasileiros de Cardiologia</italic>
            were basically clinical studies and case reports in which the methods were able to
            contribute to a better diagnosis <xref ref-type="bibr" rid="B01">1</xref><sup>-</sup><xref ref-type="bibr" rid="B04">4</xref>. The first original
            articles emerged with the use of magnetic resonance imaging in the study by Kalil Filho
            et al <xref ref-type="bibr" rid="B05">5</xref><sup>,</sup><xref ref-type="bibr" rid="B06">6</xref> in the year of 1995. At that same year, guided by Pinto et al
               <xref ref-type="bibr" rid="B07">7</xref>, emerged the first Brazilian consensus for
            the use of cardiac magnetic resonance imaging in clinical cardiology. Computed
            tomography had its first original study published in 1997, by Kalil et al <xref ref-type="bibr" rid="B08">8</xref>. One of the pioneering studies in the path of the
            evaluation of the current calcium score was performed by Feldman et al <xref ref-type="bibr" rid="B09">9</xref>.</p>
    </sec>
    <sec>
      <title>Relationship with International Societies</title>
      <p>We currently have two international societies dedicated specifically to these methods.
            The SCMR (Society for Cardiovascular Magnetic Resonance) was the first society to be
            founded and by the year 2000, it was already organizing the process of credentialing for
            those dedicated to cardiovascular magnetic resonance <xref ref-type="bibr" rid="B10">10</xref>. The SCCT (Society of Cardiovascular Computed Tomography) was founded
            shortly after, following the advances of the method, and in 2009, made available its
            guidelines for better practice of the method <xref ref-type="bibr" rid="B11">11</xref><sup>,</sup><xref ref-type="bibr" rid="B12">12</xref>. In Brazil, the
               <italic>Arquivos Brasileiros de Cardiologia</italic> had a fundamental role in the
            publication of our first guideline <xref ref-type="bibr" rid="B13">13</xref>, which was
            updated this year (2014) and is currently undergoing editing for future publication.</p>
    </sec>
    <sec>
      <title>Scientific and Educational Organization in Brazil</title>
      <p>In the early days of the organization in Brazil, a study group of cardiovascular
            magnetic resonance and computed tomography called GERT was formed and played a key role
            in the diffusion of knowledge throughout Brazil. A group of physicians dedicated to
            cardiovascular computed tomography and magnetic resonance created in Brazil the National
            Meeting of Cardiac Radiology (<italic>Encontro Nacional de Radiologia Card&#237;aca</italic>,
            ENRC), which will be on its eighth consecutive year in 2015. This group is composed of
            radiologists and cardiologists supported by SCMR and SCCT, along with national
            societies, to enhance the methods in Brazil and discuss the experiences in national
            territory. Similarly, SBC's Department of Cardiovascular Imaging (DIC), bringing
            together specialists in nuclear medicine, echocardiography, vascular ultrasound, and
            cardiovascular magnetic resonance and computed tomography, gathers annually in a meeting
            with almost 2 thousand participants and maintains the role of diffusing knowledge in the
            areas of cardiovascular magnetic resonance and computed tomography started with
            GERT.</p>
      <p>We still have only a few training centers of experts in the field, mostly in the Rio-S&#227;o
            Paulo hub, but in the last 5 years an increasing number of private institutions and
            university hospitals are strengthening teaching and research in the area. Many who are
            currently in charge of the specialized centers in Brazil sought their expertises in
            international centers and we believe that in the near future this reality will no longer
            be true, since we will have large groups throughout the country.</p>
    </sec>
    <sec>
      <title>Worldwide Impact of the Latest Publications by Brazilians</title>
      <p>The increasing group of people involved in cardiovascular imaging in Brazil and in the
            world culminated in an explosion of publications dedicated to standardization and proper
            use of the method over the last years <xref ref-type="bibr" rid="B14">14</xref><sup>-</sup><xref ref-type="bibr" rid="B31">31</xref>.</p>
      <p>Some pioneering work of great international impact has been elaborated by Brazilians and
            we managed, through this editorial, to draw attention to each one in their area.</p>
      <sec>
        <title>- Computed Tomography</title>
        <p><bold>Assessment of the coronaries</bold> &#8211; The study conducted by Miller et al <xref ref-type="bibr" rid="B32">32</xref> had one of the highest scientific impact and
               collaboration of three Brazilians, one of which was the principal investigator, and
               also had the largest number of patients included in the study by a Brazilian center.
               Published in <italic>The New England Journal of Medicine</italic> , the authors
               concluded that computed tomography can identify the presence and severity of coronary
               artery disease with good accuracy, but when positive, could not replace conventional
               coronary angiography. Recently, tomography showed its value in patients with acute
               coronary syndrome <xref ref-type="bibr" rid="B33">33</xref>.</p>
        <p><bold>Assessment of myocardial perfusion &#8211;</bold> The studies by Cury et al<xref ref-type="bibr" rid="B34">34</xref>, first published in
               <italic>Radiology</italic>, brought a new proposal for the use of computed tomography
               in the evaluation of myocardial ischemia. With simple protocols and easy clinical
               applicability, it managed to demonstrate that myocardial perfusion on computed
               tomography has good correlation with SPECT and with conventional coronary angiography
               in identifying stenosis of native vessels<xref ref-type="bibr" rid="B35">35</xref> or
               with stent<xref ref-type="bibr" rid="B36">36</xref>. The first multicenter study
               validating this new technique to detect myocardial ischemia was recently published by
               Rochitte et al<xref ref-type="bibr" rid="B37">37</xref>. This study reported high
               accuracy for detecting meaningful stenoses associated with perfusion defects in the
               same territory evaluated by tomography when compared with the combination of invasive
               catheterization with SPECT scintigraphy, and with a lower cost of radiation dose.
               Thus, this new method is able to diagnose hemodynamically meaningful stenoses or
               those associate with a reduction of myocardial blood flow.</p>
        <p><bold>Evaluation of volumes and function &#8211;</bold> The quantification of ventricular
               volumes and function has been validated against other methods of great clinical
                  applicability<xref ref-type="bibr" rid="B38">38</xref><sup>,</sup><xref ref-type="bibr" rid="B39">39</xref>, but recently the use of these measurements
               demonstrated a great potential for detection of cardiovascular risk and
                  mortality<xref ref-type="bibr" rid="B40">40</xref>.</p>
        <p><bold>Evaluation of focal fibrosis &#8211;</bold> In studies by Shiozaki et al<xref ref-type="bibr" rid="B41">41</xref><sup>,</sup><xref ref-type="bibr" rid="B42">42</xref> we can observe that, in addition to the ability to detect focal
               fibrosis, tomography can be used to predict ventricular arrhythmias. This field is of
               great importance because some patients are unable to undergo magnetic resonance and
               can benefit with this new technique.</p>
        <p><bold>Evaluation of interstitial fibrosis &#8211;</bold> In quantifying interstitial
               fibrosis by computed tomography, the studies by Nacif et al<xref ref-type="bibr" rid="B43">43</xref><sup>,</sup><xref ref-type="bibr" rid="B44">44</xref> were
               pioneers and open a potential for evaluating subclinical myocardial damage not
               previously possible in the context of cardiomyopathies.</p>
        <p><bold>Epidemiological impact &#8211;</bold> The studies by Bittencourt et al<xref ref-type="bibr" rid="B45">45</xref><sup>,</sup><xref ref-type="bibr" rid="B46">46</xref> demonstrated the prognostic potential of computed tomography in
               symptomatic patients with nonobstructive and obstructive coronary disease. However,
               Prazeres et al<xref ref-type="bibr" rid="B47">47</xref> were able to summarize in an
               unique way the potential of the technique for use in the emergency room, with
               potential of cost reduction for low-probability patients.</p>
      </sec>
      <sec>
        <title>- Magnetic Resonance</title>
        <p><bold>Assessment of the coronaries &#8211;</bold> Evaluation of the coronary arteries by
               magnetic resonance is currently limited to the characterization of the origin or
               evaluation of the proximal thirds of the main vessels. Recently, new techniques and
               use of specific vascular contrast created a new horizon for implementation of this
               method which is free of ionizing radiation. Nacif et al <xref ref-type="bibr" rid="B48">48</xref> demonstrated that the intravenous contrast medium
                  <italic>Gadofosveset trisodium</italic> had a slightly better performance than the
               contrast media routinely used.</p>
        <p><bold>Assessment of myocardial perfusion &#8211;</bold> Since the initial studies on the
               characterization of microvascular obstruction by Rochitte et al<xref ref-type="bibr" rid="B49">49</xref> in 1998, until the clinical applicability of the evaluation of
               myocardial ischemia by Cury et al<xref ref-type="bibr" rid="B50">50</xref> in 2006,
               and the use of multimodal (combined) resonance techniques for characterization of
               coronary artery disease by de Mello et al<xref ref-type="bibr" rid="B51">51</xref> in
               2012, we are able to observe the current maturity of the method in the country.</p>
        <p><bold>Evaluation of volumes and function</bold> &#8211; After years using indexing and
               morphological, volumetric and functional values &#8203;&#8203;of international studies, we can
               say that in a pioneer way, Macedo et al<xref ref-type="bibr" rid="B52">52</xref> were
               able to demonstrate in a Brazilian population different morphological and volumetric
               standards for men and women. Nacif et al<xref ref-type="bibr" rid="B53">53</xref>
               demonstrated that there are several ways to quantify atrial volume and that all
               correlate with one another.</p>
        <p><bold>Evaluation of iron deposits &#8211; </bold>The studies by Fernandes et al<xref ref-type="bibr" rid="B54">54</xref><sup>-</sup><xref ref-type="bibr" rid="B56">56</xref> are of great importance for standardization and evaluation of patients
               with hepatic and myocardial iron storage.</p>
        <p><bold>Evaluation of focal fibrosis</bold> &#8211; In this topic of publications, there are
               countless contributions by Brazilians in the impact of the method worldwide, but
               without a doubt one of the most discussed was the study by Azevedo et al<xref ref-type="bibr" rid="B57">57</xref> who were able to demonstrate the importance of
               detection and quantification of delayed myocardial enhancement in patients who
               underwent aortic valve replacement with great implication in left ventricular
               functional improvement and evaluation of mortality.</p>
        <p><bold>Evaluation of interstitial fibrosis </bold>&#8211; The studies by Mongeon et al<xref ref-type="bibr" rid="B58">58</xref>, Coelho-Filho et al<xref ref-type="bibr" rid="B59">59</xref>, Nacif et al<xref ref-type="bibr" rid="B44">44</xref>, Sibley
               et al<xref ref-type="bibr" rid="B60">60</xref> and Liu et al<xref ref-type="bibr" rid="B61">61</xref> were pioneers in the evaluation of interstitial fibrosis by
               techniques of T1 map and quantification of extracellular volume.</p>
        <p><bold>Epidemiological impact &#8211;</bold> Without a doubt, magnetic resonance is one of
               the best methods for quantification of myocardial fibrosis. When present, myocardial
               fibrosis is associated with increased mortality and worse prognosis<xref ref-type="bibr" rid="B62">62</xref>. In Brazil, in addition to the diseases
               commonly evaluated in the world, we have Chagas disease that was very well studied by
               Rochitte et al<xref ref-type="bibr" rid="B63">63</xref><sup>,</sup><xref ref-type="bibr" rid="B64">64</xref>. Now, one of the studies with a major impact
               on clinical decision using the method was in the risk reclassification using stressor
                  agents<xref ref-type="bibr" rid="B65">65</xref>.</p>
      </sec>
    </sec>
    <sec>
      <title>Impact of the Latest Publications in the<italic> Arquivos Brasileiros de
               Cardiologia</italic></title>
      <p>The <italic>Arquivos Brasileiros de Cardiologia</italic> function as a national
            thermometer and a main scientific channel reflecting this explosion of publications. The
            article by Duarte<xref ref-type="bibr" rid="B66">66</xref>, published in 2010, clearly
            demonstrates the growth of computed tomography and its impact on the detection of
            coronary artery disease. Over the past decade, we observed an increasing number of
            review articles<xref ref-type="bibr" rid="B67">67</xref><sup>-</sup><xref ref-type="bibr" rid="B75">75</xref> and original articles<xref ref-type="bibr" rid="B47">47</xref><sup>,</sup><xref ref-type="bibr" rid="B52">52</xref><sup>,</sup><xref ref-type="bibr" rid="B76">76</xref><sup>-</sup><xref ref-type="bibr" rid="B90">90</xref>, which reinforces the impact of tomography and
            magnetic resonance in current cardiovascular imaging.</p>
      <p>Finally, it is not possible to include all studies by Brazilian authors due to the
            increasing number of publications in the area, but we are sure that we are entering a
            new era of cardiovascular imaging. The great development of technology applied to
            medicine causes computed tomography and magnetic resonance to grow increasingly,
            changing day-to-day the impact on clinical practice.</p>
    </sec>
  </body>
  <back>
    <ref-list>
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  <sub-article article-type="translation" id="SA1" xml:lang="pt">
    <front-stub>
      <title-group>
        <article-title>Tomografia Computadorizada e Resson&#226;ncia Magn&#233;tica Cardiovascular:
               Hist&#243;rico e Impacto Crescente no Brasil e no Mundo</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Nacif</surname>
            <given-names>Marcelo Souto</given-names>
          </name>
          <xref ref-type="aff" rid="aff06">1</xref>
          <xref ref-type="aff" rid="aff07">2</xref>
          <xref ref-type="corresp" rid="c02"/>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Rochitte</surname>
            <given-names>Carlos Eduardo</given-names>
          </name>
          <xref ref-type="aff" rid="aff08">3</xref>
          <xref ref-type="aff" rid="aff09">4</xref>
          <xref ref-type="aff" rid="aff10">5</xref>
        </contrib>
      </contrib-group>
      <aff id="aff06">
        <label>1</label>
        <institution content-type="orgname">Hospital Universit&#225;rio Ant&#244;nio Pedro</institution>
        <institution content-type="orgdiv1">Setor de Resson&#226;ncia Magn&#233;tica e Tomografia
               Computadorizada Cardiovascular</institution>
        <addr-line>
          <named-content content-type="city">Niter&#243;i</named-content>
          <named-content content-type="state">RJ</named-content>
        </addr-line>
        <country>Brasil</country>
        <institution content-type="original">Hospital Universit&#225;rio Ant&#244;nio Pedro - HUAP - Setor
               de Resson&#226;ncia Magn&#233;tica e Tomografia Computadorizada Cardiovascular, Niter&#243;i, RJ,
               Brasil</institution>
      </aff>
      <aff id="aff07">
        <label>2</label>
        <institution content-type="orgname">Universidade Federal Fluminense</institution>
        <institution content-type="orgdiv1">P&#243;s-gradua&#231;&#227;o em Ci&#234;ncias
               Cardiovasculares</institution>
        <addr-line>
          <named-content content-type="city">Niter&#243;i</named-content>
          <named-content content-type="state">RJ</named-content>
        </addr-line>
        <country>Brasil</country>
        <institution content-type="original">P&#243;s-gradua&#231;&#227;o em Ci&#234;ncias Cardiovasculares -
               Universidade Federal Fluminense - UFF, Niter&#243;i, RJ - Brasil</institution>
      </aff>
      <aff id="aff08">
        <label>3</label>
        <institution content-type="orgname">Instituto do Cora&#231;&#227;o</institution>
        <institution content-type="orgdiv1">Setor de Resson&#226;ncia Magn&#233;tica e Tomografia
               Computadorizada Cardiovascular</institution>
        <addr-line>
          <named-content content-type="city">S&#227;o Paulo</named-content>
          <named-content content-type="state">SP</named-content>
        </addr-line>
        <country>Brasil</country>
        <institution content-type="original">Instituto do Cora&#231;&#227;o - InCor - Setor de Resson&#226;ncia
               Magn&#233;tica e Tomografia Computadorizada Cardiovascular, S&#227;o Paulo, SP -
               Brasil</institution>
      </aff>
      <aff id="aff09">
        <label>4</label>
        <institution content-type="orgname">Hospital do Cora&#231;&#227;o</institution>
        <institution content-type="orgdiv1">Associa&#231;&#227;o do Sanat&#243;rio S&#237;rio</institution>
        <addr-line>
          <named-content content-type="city">S&#227;o Paulo</named-content>
          <named-content content-type="state">SP</named-content>
        </addr-line>
        <country>Brasil</country>
        <institution content-type="original">Hospital do Cora&#231;&#227;o &#8211; HCOR - Associa&#231;&#227;o do
               Sanat&#243;rio S&#237;rio, S&#227;o Paulo, SP - Brasil</institution>
      </aff>
      <aff id="aff10">
        <label>5</label>
        <institution content-type="orgname">Hospital Pro-card&#237;aco</institution>
        <addr-line>
          <named-content content-type="city">Rio de Janeiro</named-content>
          <named-content content-type="state">RJ</named-content>
        </addr-line>
        <country>Brasil</country>
        <institution content-type="original">Hospital Pro-card&#237;aco - Rio de Janeiro, RJ -
               Brasil</institution>
      </aff>
      <author-notes>
        <corresp id="c02"><bold>Correspond&#234;ncia: Marcelo Souto Nacif</bold>. Av. S&#227;o Jo&#227;o, 2400
               &#8211; 232b. Jd Colinas, CEP 12242-000, S&#227;o Jos&#233; dos Campos, SP - Brasil. E-mail &#8211;
                  <email>msnacif@gmail.com</email></corresp>
      </author-notes>
      <kwd-group xml:lang="pt">
        <kwd>Tomografia Computadorizada por Raios X/hist&#243;ria</kwd>
        <kwd>Tomografia Computadorizada por Raios X/tend&#234;ncias</kwd>
        <kwd>Diagn&#243;stico por Imagem/tend&#234;ncias</kwd>
        <kwd>Diagn&#243;stico por Imagem/hist&#243;ria</kwd>
        <kwd>Espectroscopia de Resson&#226;ncia Magn&#233;tica/hist&#243;ria</kwd>
      </kwd-group>
    </front-stub>
    <body>
      <sec>
        <title>Crescimento no Brasil e no Mundo</title>
        <p> A tomografia computadorizada e a resson&#226;ncia magn&#233;tica cardiovascular s&#227;o um
               importante t&#243;pico dentro da &#225;rea de imagem cardiovascular no Brasil e no mundo. Nos
               Arquivos Brasileiros de Cardiologia n&#227;o &#233; diferente, e apesar do maior enfoque nos
               estudo cl&#237;nicos, estes dois t&#243;picos cresceram em impacto e publica&#231;&#245;es cient&#237;ficas
               nos &#250;ltimos anos.</p>
        <p>&#201; not&#243;ria a amplia&#231;&#227;o do parque tecnol&#243;gico nacional com entrada de in&#250;meros
               aparelhos capazes de realizar estudos avan&#231;ados utilizando a tomografia e resson&#226;ncia
               magn&#233;tica cardiovascular com um impulso cada vez maior para abertura de mais centros
               especializados nestes m&#233;todos.</p>
        <p>Quando realizamos uma revis&#227;o sistem&#225;tica utilizando o EndNote como ferramenta de
               busca e selecionamos apenas o PubMed como banco de dados com as palavras
                  &#8220;<italic>magnetic resonance</italic>&#8221; e &#8220;<italic>computed tomography</italic>&#8221;
               apenas no jornal &#8220;Arquivos Brasileiros de Cardiologia&#8221; observamos um total de 182
               trabalhos (<xref ref-type="fig" rid="f03">Figura 1</xref>).</p>
        <fig id="f03" fig-type="other">
          <label>Figura 1</label>
          <caption>
            <title>N&#250;mero de publica&#231;&#245;es nos Arquivos Brasileiros de Cardiologia com foco
                     exclusivo em tomografia computadorizada e resson&#226;ncia magn&#233;tica
                     cardiovascular.</title>
          </caption>
          <graphic xlink:href="1678-4170-abc-103-05-0362-40186-gf01-pt.jpg"/></fig>
        <p>Paralelamente quando fazemos uma busca no PubMed utilizando a palavra &#8220;cardiac&#8221; e os
                  <italic>MeSH</italic> (Medical Subject Headings) <italic>terms
                  </italic>&#8220;<italic>computed tomography</italic>&#8221; e &#8220;<italic>magnetic resonance
                  imaging</italic>&#8221; encontramos uma somat&#243;ria de publica&#231;&#245;es pr&#243;xima a 45 mil
               artigos (44.711 artigos) (<xref ref-type="fig" rid="f04">Figura 2</xref>).</p>
        <fig id="f04" fig-type="other">
          <label>Figura 2</label>
          <caption>
            <title>N&#250;mero de publica&#231;&#245;es no PubMed com foco exclusivo em tomografia
                     computadorizada e resson&#226;ncia magn&#233;tica cardiovascular.</title>
          </caption>
          <graphic xlink:href="1678-4170-abc-103-05-0362-40186-gf02-pt.jpg"/></fig>
        <p>Estes gr&#225;ficos acabam sendo meramente ilustrativos mas s&#227;o, sem d&#250;vida, marcadores do
               impacto destes m&#233;todos no Brasil (<xref ref-type="fig" rid="f03">Figura 1</xref>) e
               no mundo (<xref ref-type="fig" rid="f04">Figura 2</xref>). &#201; f&#225;cil identificar que
               ap&#243;s o ano 2000 e na &#250;ltima d&#233;cada houve uma grande inser&#231;&#227;o destes m&#233;todos no
               cen&#225;rio cient&#237;fico e acreditamos refletir tamb&#233;m no cen&#225;rio cl&#237;nico.</p>
      </sec>
      <sec>
        <title>Hist&#243;rico nos Arquivos Brasileiros de Cardiologia</title>
        <p>Os primeiros trabalhos publicados nos Arquivos Brasileiros de Cardiologia foram
               basicamente estudos de contexto cl&#237;nico e relatos de caso, onde os m&#233;todos
               conseguiram contribuir para um melhor diagn&#243;stico <xref ref-type="bibr" rid="B01">1</xref><sup>-</sup><xref ref-type="bibr" rid="B04">4</xref>. Os primeiros
               artigos originais vieram com a utiliza&#231;&#227;o da resson&#226;ncia magn&#233;tica nos trabalhos de
               Kalil Filho e cols. <xref ref-type="bibr" rid="B05">5</xref><sup>,</sup><xref ref-type="bibr" rid="B06">6</xref> no ano de 1995. Neste mesmo ano, guiado por
               Pinto e cols. <xref ref-type="bibr" rid="B07">7</xref>, surgiu o primeiro consenso
               brasileiro para a utiliza&#231;&#227;o da resson&#226;ncia magn&#233;tica card&#237;aca na pr&#225;tica
               cardiol&#243;gica. A tomografia computadorizada teve o seu primeiro artigo original
               publicado em 1997, por Kalil e cols. <xref ref-type="bibr" rid="B08">8</xref>. Um dos
               trabalhos pioneiros no caminho da avalia&#231;&#227;o do atual escore de c&#225;lcio foi realizado
               por Feldman e cols. <xref ref-type="bibr" rid="B09">9</xref>.</p>
      </sec>
      <sec>
        <title>Rela&#231;&#227;o com Sociedades Internacionais</title>
        <p>Temos atualmente duas sociedades internacionais dedicadas especificamente aos
               m&#233;todos. A SCMR ( <italic>Society for Cardiovascular Magnetic Resonance</italic> )
               foi a primeira a ser fundada, e no ano 2000 j&#225; organizava o processo de
               credenciamento para os que se dedicavam &#224; resson&#226;ncia magn&#233;tica cardiovascular <xref ref-type="bibr" rid="B10">10</xref>. A SCCT ( <italic>Society of Cardiovascular
                  Computed Tomography</italic> ) foi fundada um pouco depois, seguindo os avan&#231;os do
               m&#233;todo, e em 2009 j&#225; colocava &#224; disposi&#231;&#227;o as suas diretrizes para melhor pr&#225;tica do
               m&#233;todo <xref ref-type="bibr" rid="B11">11</xref><sup>,</sup><xref ref-type="bibr" rid="B12">12</xref>. No Brasil, os Arquivos Brasileiros de Cardiologia tiveram
               papel fundamental na publica&#231;&#227;o da nossa primeira diretriz <xref ref-type="bibr" rid="B13">13</xref> que, neste ano (2014), foi atualizada e est&#225; passando pelo
               processo de editora&#231;&#227;o para futura publica&#231;&#227;o.</p>
      </sec>
      <sec>
        <title>Organiza&#231;&#227;o Cient&#237;fica e Educacional no Brasil</title>
        <p>Nos prim&#243;rdios da organiza&#231;&#227;o no Brasil, ocorreu a forma&#231;&#227;o de um grupo de estudos de
               resson&#226;ncia e tomografia cardiovascular, chamado de GERT, e que teve papel
               fundamental na difus&#227;o do conhecimento por todo o Brasil. Um grupo de m&#233;dicos
               dedicados &#224; tomografia computadorizada e &#224; resson&#226;ncia magn&#233;tica cardiovascular
               criaram no Brasil o Encontro Nacional de Radiologia Card&#237;aca (ENRC) que ir&#225; para o
               oitavo ano consecutivo em 2015. Este grupo &#233; formado por radiologistas e
               cardiologistas que aproveitam o suporte da SCMR e da SCCT, em conjunto com as
               sociedades nacionais, para aprimorar os m&#233;todos no Brasil e discutir as experi&#234;ncias
               no territ&#243;rio nacional. Da mesma forma, o Departamento de Imagem Cardiovascular (DIC)
               da SBC, reunindo especialistas em ecocardiografia, medicina nuclear, ultrassom
               vascular, resson&#226;ncia e tomografia cardiovascular, re&#250;ne-se anualmente em um
               congresso com quase 2 mil participantes e mant&#233;m o papel difusor do conhecimento nas
               &#225;reas de resson&#226;ncia magn&#233;tica e tomografia cardiovascular iniciado com o GERT.</p>
        <p>Ainda temos poucos centros formadores de especialistas na &#225;rea, a maioria no eixo
               Rio-S&#227;o Paulo, mas nos &#250;ltimos 5&#160;anos um maior n&#250;mero de institui&#231;&#245;es privadas e
               hospitais universit&#225;rios est&#227;o fortalecendo o ensino e a pesquisa na &#225;rea. Muitos que
               atualmente est&#227;o chefiando os centros especializados no Brasil buscaram sua
               especializa&#231;&#227;o em centros internacionais e acreditamos que em um futuro pr&#243;ximo esta
               realidade n&#227;o ser&#225; mais verdadeira, pois teremos grandes grupos em todo o territ&#243;rio
               nacional.</p>
      </sec>
      <sec>
        <title>Impacto das &#218;ltimas Publica&#231;&#245;es de Brasileiros no Mundo</title>
        <p>O crescente aumento do grupo de pessoas envolvidas em imagem cardiovascular no Brasil
               e no mundo culminou em uma explos&#227;o de publica&#231;&#245;es dedicadas &#224; padroniza&#231;&#227;o e correta
               utiliza&#231;&#227;o do m&#233;todo nos &#250;ltimos anos <xref ref-type="bibr" rid="B14">14</xref><sup>-</sup><xref ref-type="bibr" rid="B31">31</xref>.</p>
        <p>Alguns trabalhos pioneiros e de grande impacto internacional foram elaborados por
               brasileiros e conseguimos, atrav&#233;s deste editorial, chamar a aten&#231;&#227;o para cada um em
               sua &#225;rea.</p>
        <sec>
          <title>- Tomografia Computadorizada</title>
          <p><bold>Avalia&#231;&#227;o de coron&#225;rias &#8211;</bold> O trabalho realizado por Miller e
                     cols.<xref ref-type="bibr" rid="B32">32</xref> teve um dos maiores impactos
                  cient&#237;ficos e colabora&#231;&#227;o de 3 brasileiros, sendo um deles o investigador
                  principal, e teve ainda o maior n&#250;mero de pacientes do estudo inclu&#237;dos por um
                  centro brasileiro. Publicado no <italic>The New England Journal of
                     Medicine</italic>, os autores conclu&#237;ram que a tomografia computadorizada pode
                  identificar a presen&#231;a e a severidade da doen&#231;a arterial coronariana com boa
                  acur&#225;cia mas que quando positiva n&#227;o poderia substituir a angiografia coronariana
                  convencional. Recentemente, a tomografia mostrou seu valor nos pacientes com
                  s&#237;ndrome coronariana aguda<xref ref-type="bibr" rid="B33">33</xref>.</p>
          <p><bold>Avalia&#231;&#227;o de perfus&#227;o mioc&#225;rdica &#8211;</bold> Os trabalhos de Cury e cols.<xref ref-type="bibr" rid="B34">34</xref>, primeiramente publicados na
                     <italic>Radiology</italic>, trouxeram uma nova proposta para a utiliza&#231;&#227;o da
                  tomografia computadorizada na avalia&#231;&#227;o de isquemia mioc&#225;rdica. Com protocolos
                  simples e de f&#225;cil aplicabilidade clinica, conseguiu demonstrar que a perfus&#227;o
                  mioc&#225;rdica por tomografia computadorizada tem boa correla&#231;&#227;o com o SPECT e com a
                  angiografia coronariana convencional na identifica&#231;&#227;o de estenose de vasos
                     nativos<xref ref-type="bibr" rid="B35">35</xref> ou com stent<xref ref-type="bibr" rid="B36">36</xref>. O primeiro trabalho multic&#234;ntrico
                  validando esta nova t&#233;cnica de detec&#231;&#227;o de isquemia mioc&#225;rdica foi recentemente
                  publicada por Rochitte e cols.<xref ref-type="bibr" rid="B37">37</xref>. Neste
                  estudo observou-se alta acur&#225;cia para detec&#231;&#227;o de estenoses significativas
                  associadas a defeitos perfusionais no mesmo territ&#243;rio na avalia&#231;&#227;o pela
                  tomografia quando comparada &#224; combina&#231;&#227;o do cateterismo invasivo com a
                  cintilografia por SPECT, e com um custo menor de dose de radia&#231;&#227;o. Assim, este
                  novo m&#233;todo &#233; capaz de diagnosticar estenoses hemodinamicamente significativas ou
                  que se associam &#224; redu&#231;&#227;o do fluxo sangu&#237;neo mioc&#225;rdico.</p>
          <p><bold>Avalia&#231;&#227;o de volumes e fun&#231;&#227;o &#8211;</bold> A quantifica&#231;&#227;o de volumes e fun&#231;&#227;o
                  ventricular j&#225; foi validada frente a outros m&#233;todos de grande aplicabilidade
                     cl&#237;nica<xref ref-type="bibr" rid="B38">38</xref><sup>,</sup><xref ref-type="bibr" rid="B39">39</xref>, mas recentemente o uso destas mensura&#231;&#245;es
                  demonstrou um grande potencial de detec&#231;&#227;o do risco cardiovascular e
                     mortalidade<xref ref-type="bibr" rid="B40">40</xref>.</p>
          <p><bold>Avalia&#231;&#227;o de fibrose focal &#8211;</bold> Nos trabalhos de Shiozaki e cols.<xref ref-type="bibr" rid="B41">41</xref><sup>,</sup><xref ref-type="bibr" rid="B42">42</xref>, conseguimos observar que al&#233;m da capacidade de detectar fibrose
                  focal, a tomografia pode ser utilizada para predizer arritmias ventriculares. Este
                  campo &#233; de grande import&#226;ncia pois alguns pacientes n&#227;o conseguem realizar a
                  resson&#226;ncia magn&#233;tica e podem se beneficiar com esta nova t&#233;cnica.</p>
          <p><bold>Avalia&#231;&#227;o de fibrose intersticial &#8211;</bold> Na quantifica&#231;&#227;o de fibrose
                  intersticial pela tomografia computadorizada, os trabalhos de Nacif e cols.<xref ref-type="bibr" rid="B43">43</xref><sup>,</sup><xref ref-type="bibr" rid="B44">44</xref> foram pioneiros e abrem um potencial de avalia&#231;&#227;o de comprometimento
                  mioc&#225;rdico subcl&#237;nico anteriormente n&#227;o poss&#237;vel no contexto das
                  miocardiopatias.</p>
          <p><bold>Impacto epidemiol&#243;gico &#8211;</bold> Os trabalhos de Bittencourt e cols.<xref ref-type="bibr" rid="B45">45</xref> e Hulten e cols.<xref ref-type="bibr" rid="B46">46</xref>, demonstraram o potencial progn&#243;stico da tomografia
                  computadorizada em pacientes sintom&#225;ticos e com doen&#231;a coronariana n&#227;o obstrutiva
                  e obstrutiva. J&#225; Prazeres e cols.<xref ref-type="bibr" rid="B47">47</xref>
                  conseguiram de forma &#237;mpar resumir o potencial da t&#233;cnica para uso na sala de
                  emerg&#234;ncia, com potencial de redu&#231;&#227;o de custos para os doentes de baixa
                  probabilidade.</p>
        </sec>
        <sec>
          <title>- Resson&#226;ncia Magn&#233;tica</title>
          <p><bold>Avalia&#231;&#227;o de coron&#225;rias &#8211;</bold> A avalia&#231;&#227;o das coron&#225;rias pela resson&#226;ncia
                  magn&#233;tica esta limitada atualmente &#224; caracteriza&#231;&#227;o da origem ou avalia&#231;&#227;o dos
                  ter&#231;os proximais dos vasos principais. Recentemente, novas t&#233;cnicas e utiliza&#231;&#227;o
                  de contraste vasculares espec&#237;ficos criaram um novo horizonte para a realiza&#231;&#227;o
                  deste m&#233;todo que &#233; livre de radia&#231;&#227;o ionizante. Raman e cols.<xref ref-type="bibr" rid="B48">48</xref> demonstraram que o meio de contraste endovenoso
                     <italic>Gadofosveset trisodium</italic> teve uma performance pouco melhor do
                  que os meios de contraste rotineiramente utilizados.</p>
          <p><bold>Avalia&#231;&#227;o de perfus&#227;o mioc&#225;rdica &#8211;</bold> Desde os trabalhos iniciais de
                  caracteriza&#231;&#227;o da obstru&#231;&#227;o microvascular por Rochitte e cols.<xref ref-type="bibr" rid="B49">49</xref> em 1998, at&#233; a aplicabilidade cl&#237;nica da
                  avalia&#231;&#227;o da isquemia mioc&#225;rdica por Cury e cols.<xref ref-type="bibr" rid="B50">50</xref> em 2006, e a utiliza&#231;&#227;o da multimodalidade (combinada) das t&#233;cnicas
                  de resson&#226;ncia para caracteriza&#231;&#227;o da doen&#231;a arterial coronariana por de Mello e
                     cols.<xref ref-type="bibr" rid="B51">51</xref> em 2012, conseguimos constatar a
                  atual maturidade do m&#233;todo em territ&#243;rio nacional.</p>
          <p><bold>Avalia&#231;&#227;o de volumes e fun&#231;&#227;o &#8211;</bold> Ap&#243;s anos utilizando indexa&#231;&#227;o e
                  valores morfol&#243;gicos, volum&#233;tricos e funcionais de estudos internacionais podemos
                  dizer que de forma pioneira Macedo e cols.<xref ref-type="bibr" rid="B52">52</xref> conseguiram demonstrar em uma popula&#231;&#227;o brasileira padr&#245;es
                  morfol&#243;gicos e volum&#233;tricos diferentes para homens e mulheres. Nacif e cols.<xref ref-type="bibr" rid="B53">53</xref> demostraram que existem v&#225;rias formas de
                  quantifica&#231;&#227;o do volume atrial e que todas possuem correla&#231;&#227;o entre si.</p>
          <p><bold>Avalia&#231;&#227;o de dep&#243;sito de ferro &#8211;</bold> Os trabalhos de Fernandes e
                     cols.<xref ref-type="bibr" rid="B54">54</xref><sup>-</sup><xref ref-type="bibr" rid="B56">56</xref> s&#227;o de grande import&#226;ncia para padroniza&#231;&#227;o e avalia&#231;&#227;o dos
                  pacientes com dep&#243;sito de ferro hep&#225;tico e mioc&#225;rdico.</p>
          <p><bold>Avalia&#231;&#227;o de fibrose focal &#8211;</bold> Neste t&#243;pico de publica&#231;&#245;es s&#227;o in&#250;meras
                  as contribui&#231;&#245;es de brasileiros no impacto do m&#233;todo no cen&#225;rio mundial, mas sem
                  sombra de d&#250;vidas, um dos trabalhos mais discutidos foi o de Azevedo e cols.<xref ref-type="bibr" rid="B57">57</xref> que conseguiu demonstrar a import&#226;ncia da
                  detec&#231;&#227;o e quantifica&#231;&#227;o do realce mioc&#225;rdico tardio nos pacientes que se
                  submeteram &#224; troca valvar a&#243;rtica, tendo grande implica&#231;&#227;o na melhora funcional do
                  ventr&#237;culo esquerdo e na avalia&#231;&#227;o de mortalidade.</p>
          <p><bold>Avalia&#231;&#227;o de fibrose intersticial &#8211;</bold> Os trabalhos de Nacif e
                     cols.<xref ref-type="bibr" rid="B44">44</xref>, Mongeon e cols.<xref ref-type="bibr" rid="B58">58</xref>, Coelho-Filho e cols.<xref ref-type="bibr" rid="B59">59</xref>, Sibley e cols.<xref ref-type="bibr" rid="B60">60</xref> e
                  Liu e cols.<xref ref-type="bibr" rid="B61">61</xref>, foram pioneiros na avalia&#231;&#227;o
                  da fibrose intersticial pelas t&#233;cnicas do mapa T1 e quantifica&#231;&#227;o do volume
                  extracelular.</p>
          <p><bold>Impacto epidemiol&#243;gico &#8211;</bold> Sem sombra de d&#250;vidas, a resson&#226;ncia
                  magn&#233;tica &#233; um dos melhores m&#233;todos para quantifica&#231;&#227;o de fibrose mioc&#225;rdica. A
                  fibrose mioc&#225;rdica quando presente est&#225; relacionada a maior mortalidade e pior
                     progn&#243;stico<xref ref-type="bibr" rid="B62">62</xref>. No Brasil, al&#233;m das
                  doen&#231;as comumente avaliadas no mundo, temos a doen&#231;a de Chagas que foi muito bem
                  estudada por Rochitte e cols.<xref ref-type="bibr" rid="B63">63</xref><sup>,</sup><xref ref-type="bibr" rid="B64">64</xref>. Agora, um dos
                  trabalhos com grande impacto na decis&#227;o cl&#237;nica utilizando o m&#233;todo foi na
                  reclassifica&#231;&#227;o de risco utilizando agentes estressores<xref ref-type="bibr" rid="B65">65</xref>.</p>
        </sec>
      </sec>
      <sec>
        <title>Impacto das &#218;ltimas Publica&#231;&#245;es nos Arquivos Brasileiros de Cardiologia</title>
        <p>Os Arquivos Brasileiros de Cardiologia funcionam como term&#244;metro nacional e principal
               canal cient&#237;fico refletindo esta explos&#227;o de publica&#231;&#245;es. O artigo de Duarte <xref ref-type="bibr" rid="B66">66</xref>, publicado em 2010, demonstra claramente o
               crescimento da tomografia computadorizada e seu impacto na detec&#231;&#227;o da doen&#231;a
               arterial coronariana. Nos &#250;ltimos dez anos observamos um n&#250;mero crescente de artigos
               do tipo revis&#227;o <xref ref-type="bibr" rid="B67">67</xref><sup>-</sup><xref ref-type="bibr" rid="B75">75</xref> e artigos originais <xref ref-type="bibr" rid="B47">47</xref><sup>,</sup><xref ref-type="bibr" rid="B52">52</xref><sup>,</sup><xref ref-type="bibr" rid="B76">76</xref><sup>-</sup><xref ref-type="bibr" rid="B90">90</xref> o que refor&#231;a o impacto da tomografia e da
               resson&#226;ncia na imagem cardiovascular atual.</p>
        <p>Finalmente, n&#227;o &#233; poss&#237;vel incluir todos os trabalhos de autores brasileiros devido
               ao n&#250;mero crescente de publica&#231;&#245;es na &#225;rea, mas temos certeza que estamos entrando em
               uma nova era da imagem cardiovascular. O grande desenvolvimento da tecnologia
               aplicada &#224; medicina faz com que a tomografia computadorizada e a resson&#226;ncia
               magn&#233;tica cres&#231;am cada vez mais modificando dia-a-dia o impacto na pr&#225;tica
               cl&#237;nica.</p>
      </sec>
    </body>
  </sub-article>
</article>
