摘要
目的:对比分析16层螺旋CT中腰椎间盘轴位扫描与容积扫描后通过工作站多平面重组(MPR)的优劣。方法:随机抽取16层螺旋CT中的腰椎间盘轴位扫描与容积扫描后经MPR完成的受检者各50例,将其分为A、B两组。分别从图像的质量、辐射剂量、扫描时间三方面,对两种扫描方法做出对比分析。结果:除外脊柱侧弯、腰骶角大于机架最大倾角等因素,两种方法所获腰椎间盘图像,均完全满足腰椎间盘病变的诊断要求,图像质量无明显差异;辐射剂量就同样个数的腰椎间盘来讲,轴位扫描法明显少于容积扫描法,其剂量不到容积扫描法的1/2;完成整个扫描过程所用时间,两种扫描方法无明显差异。结论:对椎间盘的CT检查,最好采用轴位扫描法,以减少病人所受的辐射剂量。
Objective： To have a contrastive study of the advantages and disadvantages of the axial scanning and volume scanning after multi-planar reconstruction（MPR） at the workstation for the lumbar discs with 16-slice spiral CT.Methods： Randomly select cases by the axial scanning（Group A） and the volume scanning after multi-planar reconstruction（Group B） with 16-slice spiral CT and each group contains 50 cases.Analyzing contrastively on the quality of the images,radiation dose,scanning time of the two scanning modes.Results： The quality of the images for the two methods completely satisfies the diagnosing requirements and has no considerable differences,except for that patients with scoliosis or the lumbar-sacral angle was larger than the maximum inclination angle of the scanner frame.Radiation dose of the axial scanning is obviously less than volume scanning,with no more than 1/2 dose of the latter.The scanning time of the two scanning modes has no obvious difference.Conclusion： For lumbar disc lesions,it would be better to use the axial scanning rather than volume scanning,in which the patients would receive less radiation.
出处
《医疗装备》
2011年第7期12-15,共4页
Medical Equipment
关键词
椎间盘
体层摄影术
X线计算机
容积扫描
多平面重组
Disc
Tomography
X-ray computed
Volume scanning
Multi-planar reconstruction（MPR）
