title: Superiority of dipyridamole over exercise testing when exercise thallium imaging is limited by angina.
abstract: The extent of jeopardized myocardium can be underestimated on stress thallium myocardial perfusion images when exercise tolerance is limited by angina pectoris. A patient's tolerance for pain can influence the degree of myocardial ischemia observed on myocardial perfusion images during effort angina. A case is reported of a patient with angina pectoris showing mild ischemia limited to one myocardial segment on exercise thallium images, but severe and extensive reversible perfusion defects during dipyridamole-thallium imaging, and a 70% stenosis of the left main coronary artery on coronary angiography.
authors: Department of Medicine, Maisonneuve-Rosemont Hospital, Montreal, Quebec.
authors: J
authors: J
authors: Lette
authors: D
authors: D
authors: Waters
authors: M
authors: M
authors: Cerino
authors: J
authors: J
authors: Lapointe
mesh_terms: D000787:Angina Pectoris / Q000000981:diagnostic imaging*; D003327:Coronary Disease / Q000000981:diagnostic imaging*; D004176:Dipyridamole; D005080:Exercise Test; D005260:Female; D006801:Humans; D008875:Middle Aged; D011877:Radionuclide Imaging; D013794:Thallium Radioisotopes
chemical_list: D013794:Thallium Radioisotopes; D004176:Dipyridamole