Feasibility Study of One-stop Coronary Artery and Head-Neck Combined CTA Scanning:
Image Quality and Radiation Dose
CAI Xiansheng1, WEI Li1, JIA Huijuan1, JIANG Yonghong2, LI Zhao1, LIU Daliang1, FU Yucun1
1. Department of Imaging, Liaocheng People’s Hospital, Liaocheng Shandong 252000, China;
2. Department of Outpatient, Liaocheng Dongchangfu People’s Hospital, Liaocheng Shandong 252000, China
Abstract:Objective To evaluate the feasibility and advantages of combined coronary artery axial scanning and head-neck spiral
scanning with Revolution CT in clinical application. Methods A total of 78 patients who underwent CTA from December 2016
to March 2017 were randomly divided into three groups, 26 patients in each group. Group A: The patients underwent combined
scanning, first spiral scanning of head-neck, and then switched to axial scanning mode after 1.1 s interval for CTA scanning of
coronary artery. Group B: The patients underwent CTA scanning from the aortic arch to the top of the skull. Group C: Patients
underwent automatic ECG-gated cardiac CTA scanning. The radiation dose (ED) and the dosage of contrast medium in each group
were recorded. The image quality of the three groups was evaluated by two doctors. Results Subjective and objective evaluation of
image quality showed that there was no significant difference between group A and group B in head-neck CTA, and between group A
and group C in heart CTA. The dosage of contrast medium in group A (53.1±3.9 mL) was significantly lower than that (115.2±10.6 mL)
in group B and C (t=15.9, P<0.01). There was no significant difference in radiation dose between group A (2.1±0.4 mSv) and group
B and C (1.94±0.5 mSv) (t=0.09, P<0.01). Conclusion Axial scanning combined with spiral scanning can be used for coronary
artery and head-neck CTA scanning, which has good image quality and less contrast agent. It can be used for clinical evaluation of
coronary artery and head-neck vessels in patients with cardiovascular and cerebrovascular diseases.
蔡显圣1,魏里1,贾慧娟1,蒋永红2,李钊1,刘大亮1,付玉存1. 冠状动脉和头颈CTA“一站式”联合扫描的可行性研究:图像质量及辐射剂量[J]. 中国医疗设备, 2019, 34(11): 97-100.
CAI Xiansheng1, WEI Li1, JIA Huijuan1, JIANG Yonghong2, LI Zhao1, LIU Daliang1, FU Yucun1. Feasibility Study of One-stop Coronary Artery and Head-Neck Combined CTA Scanning:
Image Quality and Radiation Dose. China Medical Devices, 2019, 34(11): 97-100.