中国临床医学影像杂志2012，Vol.23Issue(1)：21-24,4.
64层螺旋CT颈椎外伤低剂量扫描
64-MSCT low-dose scanning in cervical spine trauma
摘要
Abstract
Objective: To compare the scanning dose of two different acquisition patterns of 64-slice spiral CT in the cervical scan. Materials and Methods: 60 patients with cervical injury were assigned to undergo either cervical pattern(n=30) or pelvis pattern (n=30) scan on a 64-slice spiral CT. A water phantom was scanned 30 times with each acquisition pattern as control(cervical pattern and pelvis pattern). We recorded the average volume CT dose index(CTDIvol), scanning time, effective mAs and calculated the dose-length product (DLP), mean effective dose (E) each time respectively. All images were evaluated by 3 experienced radiologists blindly. Results: The CTDIvol of cervical pattern group was larger than that of pelvis pattern group. The reduction of E value in the group of pelvis pattern is up to 59.0% compared with the group of cervical pattern. There was no significant difference in image quality score between two acquisition pattern groups which was acceptable for clinic need(P>0.05). Conclusion: Considering the optimization of dose, the pelvis pattern of 64-slice spiral CT has lower radiation dose to evaluate the patients with cervical trauma.关键词
颈椎/创伤和损伤/体层摄影术,螺旋计算机Key words
Cervical vertebrae/ Wounds and injuries/ Tomography, spiral computed分类
医药卫生引用本文复制引用
李晓娜,彭志刚,马晓晖,崔建岭,孙英彩..64层螺旋CT颈椎外伤低剂量扫描[J].中国临床医学影像杂志,2012,23(1):21-24,4.基金项目
河北省卫生厅医学科学研究重点课题(编号:20090421). （编号:20090421）
