When is reacquisition necessary due to high extra-cardiac uptake in myocardial perfusion scintigraphy?

Background: Technetium-labeled agents, which are most often used for assessing myocardial perfusion in myocardial perfusion scintigraphy (MPS), are cleared by the liver and excreted by the biliary system. Spillover from extra-cardiac activity into the myocardium, especially the inferior wall, might conceal defects and lower the diagnostic accuracy of the study. The objective was to determine rules of thumb for when reacquisition is useful due to high extra-cardiac uptake, i.

Can nuclear medicine technologists assess whether a myocardial perfusion rest study is required?

Unlabelled: Both stress and rest imaging are usually performed to diagnose ischemia or infarction in the left ventricle. If the stress study is performed first and the images indicate normal findings, it might be unnecessary to perform the rest study. The current study determines whether nuclear medicine technologists can assess the necessity of a rest study.