title: Reproducibility of ejection fraction and ventricular volume by gated radionuclide angiography after myocardial infarction.
abstract: To validate the repeated use of radionuclide equilibrium angiography for determining left ventricular (LV) ejection fraction (EF) and end-diastolic and end-systolic volumes (EDV and ESV), 25 patients were studied on an hourly basis an average of 9.1 days after acute myocardial infarction. Data were processed with a semi-automatic computer program which develops an averaged-volume curve from an assigned LV region-of-interest. LV EDV and ESV were derived from a previously described method which correlates well with contrast angiography (r = 0.977, y = 0.0255x - 0.121). Comparison between initial and subsequent equilibrium EF and between initial and subsequent volumes showed excellent correlation. Excluding three anginal episodes, the EF variation between studies averaged 0.03 +/- 0.02.
mesh_terms: D000208:Acute Disease; D000328:Adult; D000368:Aged; D000792:Angiography; D001794:Blood Pressure; D002306:Cardiac Volume; D003201:Computers; D017023:Coronary Angiography; D003971:Diastole; D004562:Electrocardiography; D005260:Female; D006339:Heart Rate; D006352:Heart Ventricles / Q000000981:diagnostic imaging / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction; D009203:Myocardial Infarction / Q000503:physiopathology*; D011877:Radionuclide Imaging; D013599:Systole; D013667:Technetium
chemical_list: D013667:Technetium