title: Radionuclide assessment of right ventricular ejection fraction: a comparison of first pass studies with 133Xe and 99Tcm.
abstract: Right ventricular ejection fraction (RVEF) was determine in 26 patients using the first pass radionuclide angiocardiography with 133Xe and 99Tcm as tracers. A good correlation (r = 0.88) was found. Duplicate determinations in 13 patients with 133Xe showed good reproducibility, the absolute value for the standard error of a single determination being 2.6% and the coefficient of variation 5.7%. In a reference group of 17 individuals RVEF was 49 +/- 5% (range 42-61%). It is concluded that 133Xe can be used for RVEF determinations. Due to the rapid elimination and the low radiation dose 133Xe is preferable when repeated determinations of RVEF are desired.
mesh_terms: D000328:Adult; D002302:Cardiac Output; D006321:Heart / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006331:Heart Diseases / Q000000981:diagnostic imaging; D006352:Heart Ventricles / Q000000981:diagnostic imaging; D006801:Humans; D008171:Lung Diseases / Q000000981:diagnostic imaging; D008875:Middle Aged; D011877:Radionuclide Imaging; D013670:Sodium Pertechnetate Tc 99m; D013318:Stroke Volume; D013667:Technetium; D014980:Xenon Radioisotopes
chemical_list: D014980:Xenon Radioisotopes; D013667:Technetium; D013670:Sodium Pertechnetate Tc 99m