Kuni C C, Johnson T K, Boudreau R J
Department of Radiology, University of Minnesota Hospital and Clinics, Minneapolis 55455.
Am J Physiol Imaging. 1988;3(3):139-41.
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.
我们比较了高灵敏度（HS）准直器和高分辨率（HR）准直器在13例接受心脏门控血池显像检查的患者进行2.5分钟低计数采集时的情况。高计数采集作为标准。针对每个准直器，将根据低计数采集计算出的射血分数与高计数采集的结果进行绘图；HS绘图的方差较低，且HS图像更优。
