Clinical comparison of high-resolution with high-sensitivity collimators in low-count cardiac gated blood pool studies.
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.
Kuni
C C
CC
Department of Radiology, University of Minnesota Hospital and Clinics, Minneapolis 55455.
Johnson
T K
TK
Boudreau
R J
RJ
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
D013670:Sodium Pertechnetate Tc 99m