肝脏螺旋CT扫描技术回顾性研究

Liver CT Scanning Technology Retrospective Study

目的:规范肝脏螺旋CT扫描技术参数,降低扫描的随意性、主观性,达到诊断的准确性。材料与方法:采用岛津7800TX螺旋CT扫描机,扫描以不同层厚,层距和重建间距。结果:肝脏平扫,管电压120kv,管电流为250mA,层厚和层距分为5mm。重建间距为2.5mm,螺距为1,距阵为512×512放大区域包括肝脏大小为准,强化扫描,对比剂量以1.5ml/kg,注射速率为2.5ml/s,在注射开始后20s和70s对全肝进行扫描可获得满意的动脉期和静脉期图像。结论:灵活运用螺旋CT扫描技术参数对肝脏疾病的诊断具有重要价值。

Regulate liver CT scanning parameters, reducing the arbitrariness of scanning, subjectivity, an the accuracy of diagnosis. Materials and Methods： Achieved using shimadzu 7800 TX spiral CT scanner, scanning in different thickness, interval, spacing and reconstruction. Results： Liver scan, the tube voltage of 120kv, the tube of current 250mA, thickness and is divided into 5mm spacing for the reconstruction of 2.5mm. pitch = 1, for a huge array of 512 × 512 large size region, includin the liver prevail. Enhanced scan, as compared to a dose 1.5ml/kg, injection rate of 2.5ml/s, After injection of 20＇ s and 70＇ s in the whole liver scanning will be satisfied with the phase A and phase V images. Conclusian： Flexibility in the use of spiral CT scanning technology parameters of the diagnosis of liver diseases is of great avlue.