Quantification of Myocardial Ischemia: Comparison between Myocardial SPECT and 13NH3 PET/TC
Introduction
Myocardial perfusion is a very important tool to diagnose and quantify hypoperfusion related to coronary artery disease (CAD). Single-photon emission computed tomography (SPECT) myocardial perfusion imaging (MPI) is a widely available nuclear medicine imaging tool. Cardiac 13N-ammonia positron emission tomography/computed tomography (13NH3 PET/CT) has increased its capability to provide quantitative measures of myocardial blood flow at rest and under stress, as well as of coronary flow reserve (CFR), in addition to better image quality.
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