Revolution CT行冠状动脉联合胸腹主动脉成像

Objective: To investigate the value of Revolution CT for CT angiography (CTA) of coronary artery combined with thoracoabdominal aorta. Methods: Totally 120 patients with suspected coronary artery and/or aortic diseases underwent CTA of coronary artery combined with thoracic and abdominal aorta (group A), coronary artery alone (group B) as well as thoracic and abdominal aorta (group C) using Revolution CT, respectively(each n=40). The effective radiation dose (ED) was recorded, and CT value, signal noise ratio (SNR) and contrast noise ratio (CNR) were compared between group A and group B, also between group A and group C. Results: There was no statistical difference of CT value of target branches of coronary artery between group A and group B (all P>0.05), nor of SNR and CNR of other branches (all P>0.05), while significant differences of SNR and CNR were found of left circumflex artery (t=2.84, 2.61, both P<0.05). There were significant differences of CT value of common iliac artery bifurcation between group A and group C (t=3.63, P<0.05), also of SNR and CNR of aorta at diaphragm level between group A and group C (t=-2.92, -2.76, both P<0.05), but no of CT value, SNR nor CNR of other vascular branches (all P>0.05). There was no significant difference of ED between group A and group B during coronary artery CTA ([3.00±0.39] mSv vs [3.03±0.42 ]mSv, t=-0.91, P>0.05), while ED of patients in group A ([4.60±1.09] mSv) was lower than that in group C ([10.88±1.15] mSv) during CTA of thoracic and abdominal aorta (t=-17.79, P<0.05). Conclusion: CTA of coronary artery combined with thoracoabdominal aorta using Revolution CT might obtain satisfactory imaging quality and significantly reduce ED. Copyright © 2021 by the Press of Chinese Journal of Medical Imaging and Technology.

CT angiography of coronary artery combined with thoracoabdominal aorta using Revolution CT

Objective To investigate the value of Revolution CT for CT angiography (CTA) of coronary artery combined with thoracoabdominal aorta. Methods Totally 120 patients with suspected coronary artery and/or aortic diseases underwent CTA of coronary artery combined with thoracic and abdominal aorta (group A), coronary artery alone (group B) as well as thoracic and abdominal aorta (group C) using Revolution CT, respectively(each n=40). The effective radiation dose (ED) was recorded, and CT value, signal noise ratio (SNR) and contrast noise ratio (CNR) were compared between group A and group B, also between group A and group C. Results There was no statistical difference of CT value of target branches of coronary artery between group A and group B (all P>0.05), nor of SNR and CNR of other branches (all P>0.05), while significant differences of SNR and CNR were found of left circumflex artery (t=2.84, 2.61, both P<0.05). There were significant differences of CT value of common iliac artery bifurcation between group A and group C (t=3.63, P<0.05), also of SNR and CNR of aorta at diaphragm level between group A and group C (t=-2.92, -2.76, both P<0.05), but no of CT value, SNR nor CNR of other vascular branches (all P>0.05). There was no significant difference of ED between group A and group B during coronary artery CTA (mSv vs mSv, t=-0.91, P>0.05), while ED of patients in group A (mSv) was lower than that in group C (mSv) during CTA of thoracic and abdominal aorta (t=-17.79, P<0.05). Conclusion CTA of coronary artery combined with thoracoabdominal aorta using Revolution CT might obtain satisfactory imaging quality and significantly reduce ED.