Optimal image reconstruction phase at low and high heart rates in dual-source CT coronary angiography

摘要: The purpose of this study was to determine the cardiac phase having highest coronary sharpness for low and high heart rate patients scanned with dual source CT (DSCT) compare image over different phases. DSCT scans 30 (≤70 beats per minute- bpm) (>70 were reconstructed into phases, starting at 30% increasing 5% increments until 70%. A blinded observer graded segment, from which scores produced right (RCA), left main (LM), anterior descending (LAD), circumflex (Cx) arteries. For each artery, maximal identified repeated measures analysis variance. Comparison between made using generalized estimating equations. rates all four vessels (RCA, LM, LAD, Cx) 65 or 70% phase, are end-diastolic 35 45% end-systolic Low had higher most phases; however, in (P < 0.0001). Using scanning, optimal is obtained end-diastole end-systole rates.