Optimization Study of MSCT Surestart Tracking and Triggering Technique for Imaging of Coronary Artery / 医疗卫生装备

ABSTRACT

Objective To investigate the optimum threshold value of tracking and triggering technique (surestart) in imaging of coronary artery by 16-slice row CT. Methods 60 patients enrolled in the enhanced scan of coronary artery imaging were divided into 2 groups (group a : heart rate 70 beats/per minute ). The quality of images collected under different threshold value and heart rate was compared. The image quality of coronary artery was ranked by 3 levels, namely, level A, B and C. The data were statistically analyzed. Results The image quality triggered by 160 HU of group b was level A. The image quality triggered by 180 HU of group a was level A. Conclusion The optimum surestart is 180 HU when the heart rate 70 beats/per minute.