Comparative study of quantitative blood pool SPECT imaging with 180° and 360° acquisition orbits on accuracy of cardiac function

Background Quantitative blood pool single photon emission computed tomography (SPECT) (QBS) can measure ejection fraction (EF) and volumes from gated blood pool single photon emission tomography (GBPS) working in fully automatic mode in 3-dimensional space. The effects of 180° and 360° data acquisition in GBPS have not been fully evaluated. This study compares the accuracy of 360° and 180° data acquisition for left ventricular (LV) systolic function in a clinical study and measures LV volume by GBPS compared with ultrasound echocardiography.