Optimization of Image Quality in High-Pitch Non-Gated Heart-Brain CTA with
Dual-Source CT in Acute Ischemic Stroke
LIU Jiabin1, WANG Chen1, ZHU Xiaolian1, LI Yan1, SHEN Chong1, YU Xuan1, DU Xiangying1,2, LI Kunchen1,2, LU Jie1,2
1. Department of Radiology and Nuclear Medicine, Xuanwu Hospital, Capital Medical University, Beijing 100053
2. Beijing Key Laboratory of MRI and Brain Informatics, Beijing 100053
Abstract：Objective To evaluate the image quality differences of dual source CT at different pitch in free breathing non-gated mode
for combined cardio-cerebral scanning in patients with acute ischemic stroke, and optimize the scanning scheme. Methods Patients
with suspected acute ischemic stroke with emergency CT perfusion imaging (CTP) combined with head and neck CT angiography
(CTA) in our hospital from January to December 2018 were selected, and the experimental group was randomly divided into
group A (pitch 2.0) and group B (pitch 3.2) according to the different pitch at the time of scanning. Patients with routine outpatient
appointments for combined cardiac and cerebral CTA examinations from November 2017 to April 2018 were selected as control
group (group C). The scanning equipment used was third-generation dual-source CT force from Siemens. The image quality among
three groups were compared. Results A total of 24 patients were included in group A, 22 patients in group B and 26 patients in group
C respectively. There was no significant difference in gender, age, body mass index and heart rate among the three groups (P>0.05).
There was significant difference in the subjective evaluation of motion artifacts among the three groups (P<0.05), among which
group A had the worst image quality, and there was no significant difference between group B and group C (P>0.05).
Conclusion Free breathing non-gated cardio-cerebral cascade using 3.2 pitch can provide anatomical information of cardiac
structures without increasing the radiation dose to the patient and without affecting the quality of head and neck CTA, which can
provide an imaging solution for the identification of cardiogenic infarction.
刘佳宾1，王臣1，祝小莲1，李岩1，沈翀1，禹烜1，杜祥颖1,2，李坤成1,2，卢洁1,2. 急性缺血性脑卒中双源CT大螺距非门控心脑联扫的图像质量优化研究[J]. 中国医疗设备, 2022, 37(8): 164-167.
LIU Jiabin1, WANG Chen1, ZHU Xiaolian1, LI Yan1, SHEN Chong1, YU Xuan1, DU Xiangying1,2, LI Kunchen1,2, LU Jie1,2. Optimization of Image Quality in High-Pitch Non-Gated Heart-Brain CTA with
Dual-Source CT in Acute Ischemic Stroke. China Medical Devices, 2022, 37(8): 164-167.
