title: Serial radionuclide determinations of the electron fraction with 99mTc-labeled red blood cells.
abstract: The reproducibility of area/length ejection fraction determinations was evaluated in 21 subjects using 99mTc-labeled red blood cells (99mTc-RBCs). The ejection fraction was determined within 30 minutes and 3-5 hours after a single injection of 99mTc-RBCs. The mean absolute difference between the initial and subsequent ejection fractions was 7% (maximum, 15%) (r = 0.90). 99mTc-RBCs offer a reproducible method of determining the ejection fraction which is suitable for serial noninvasive evaluations of left ventricular function.
mesh_terms: D002302:Cardiac Output; D003327:Coronary Disease / Q000503:physiopathology; D004912:Erythrocytes; D006334:Heart Function Tests / Q000379:methods*; D006352:Heart Ventricles; D006801:Humans; D011877:Radionuclide Imaging / Q000379:methods*; D013667:Technetium
chemical_list: D013667:Technetium