摘要
目的:研究不同剂量64排CT增强扫描结合三维重建在胃癌应用中的图像质量。方法:90例胃癌行胃部64层螺旋CT三期增强扫描患者后根据管电压设置分成A、B、C三组:A组120KV、B组100KV、C组80KV。通过轴位图像结合三维重建(VR、MPR和MIP等)分析不同剂量下螺旋CT扫描结合三维重建图像诊断质量。结果:A、B两组的图像清晰度的差异无统计学意义(P>0.05),A、B组剂量加权指数降低率的差异具有统计学意义,A、C两组间图像清晰度及剂量加权指数降低率的差异具有统计学意义(P<0.05),B、C组两项差异具有统计学意义。结论:适当调整MSCT的剂量,可以获得与常规MSCT剂量完全相同的图像而且可以降低辐射。
Objective：To study different doses of 64 row CT enhanced scan combined with image quality of 3 d reconstruction in gastric cancer.Methods：90 cases of gastric cancer line 64 layer three periods of spiral CT enhanced scan in patients with stomach after according to the tube voltage setting is divided into three groups：A,B,C group A 120 kv,100 kv group B,group C 80 kv.Through the shaft combined with 3 d reconstruction image （VR,MIP and MPR） analysis under the different dose spiral CT scan in combination with 3 d reconstruction image diagnosis quality.Results：Image resolution difference of A and B two groups has no statistical significance （P〉0.05）,A,B group of weighted index lower dose rate differences statistically significant,A,C image resolution between the two groups and dose weighted index decrease rate differences statistically significant （P〈0.05）,group B and C two difference is statistically significant.Conclusion：Adjust the dose of MSCT,can be obtained with conventional MSCT but also can reduce the radiation dose of the same images.
出处
《现代生物医学进展》
CAS
2017年第15期2944-2948,共5页
Progress in Modern Biomedicine
基金
黑龙江省教育厅科学研究项目(2012-153)
关键词
胃癌
多层螺旋CT
三维重建
不同剂量
图像质量对比
Gastric carcinoma
Multi-slice computed tomography
Dimensional reconstruction
Different doses
Image quality comparison
