Myocardial perfusion (stress/rest) imaging is categorized as

• A. Lung NM Studies
• B. Genitourinary Studies
• C. Cardiac NM Studies
• D. Thyroid Uptake Study

Answer: (C)

The main idea is that myocardial perfusion imaging is a cardiac nuclear medicine study. It uses radiotracers to visualize blood flow to the heart muscle, typically under both stress and rest conditions to detect ischemia or scar. Because the test is centered on the heart and uses nuclear medicine techniques to image cardiac perfusion, it belongs in the category of cardiac nuclear medicine studies. Other options refer to imaging of different organs—lung perfusion/ventilation, kidneys and urinary tract, or thyroid uptake—so they don’t fit this heart-focused modality.