Duration of abnormal SPECT myocardial perfusion imaging following resolution of acute ischemia: an angioplasty model.

Objectives: This study was designed to determine how long nuclear myocardial perfusion imaging (MPI) remains abnormal following transient myocardial ischemia.

Background: Acute rest MPI identifies myocardial ischemia with a high sensitivity when the radionuclide is injected during chest pain. However, the sensitivity of this technique is uncertain when the radionuclide is injected following the resolution of symptoms.