title: Clinical comparison of high-resolution with high-sensitivity collimators in low-count cardiac gated blood pool studies.
abstract: We compared high-sensitivity (HS) and high-resolution (HR) collimators for 2.5-minute low-count acquisitions in 13 patients undergoing cardiac gated blood pool studies. High-count acquisitions served as standards. Ejection fractions calculated from low-count acquisitions were plotted against high-count acquisitions for each collimator; the variance of the HS plot was lower, and HS images were superior.
authors.affiliation: Department of Radiology, University of Minnesota Hospital and Clinics, Minneapolis 55455.
authors.forename: C C
authors.initials: CC
authors.lastname: Kuni
authors.forename: T K
authors.initials: TK
authors.lastname: Johnson
authors.forename: R J
authors.initials: RJ
authors.lastname: Boudreau
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004912:Erythrocytes; D005260:Female; D006321:Heart / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D005082:Physical Exertion; D011877:Radionuclide Imaging / Q000295:instrumentation*; D013670:Sodium Pertechnetate Tc 99m; D013318:Stroke Volume
chemical_list: D013670:Sodium Pertechnetate Tc 99m