Papadopoulou, S.L.

patient heart aortic image quality velocity protocol image angiography heart rate aortic stenosis radiation dose quality radiation study women spiral stenosi segment mdct peak velocity sequential scanning dual-source tomography classi fied group volume level sensitivity minute valve artery group b radiation exposure tte peak velocity disease image quality grade grade heart rates scan protocol high-pitch value accuracy technique fl ow velocity retrospective aortic lea flets measurement planimetry classi exposure difference window mdct ava interval sequential scan protocol radiology specificity number transaortic result rr interval performance table per-segment level phase analysis artery disease aortic valve area signi ficantly signi intervention imaging radiol diagnosis dual-source ct 10.1002/ ccd tube voltage comparison scan window increment