多层螺旋CT多平面重建在阻塞性黄疸诊断中的应用

目的：探讨多层螺旋CT(MSCT)多平面重建(MPR)在阻塞性黄疸诊断中的临床应用价值。方法：33例经B超检查提示有肝外胆管梗阻的患者，采用10mm层厚、层距，使用血管对比剂行MSCT增强扫描，将肝实质期图像采用2．5mm层厚、1．25mm层距重建，获得轴面源像(ASI)，数据传至工作站后处理，行MPR成像。采用育法对胆管梗阻定位和定性诊断作出评价。结果：MPR成像成功率为100％，MPR像定位和定性准确率分别为100％和97％。结论：MPR像定位和定性准确率高，显示胆管的走行更具优势，因此MPR成像技术是轴位CT的有效补充。

The application of multiplanar reconstruction with MSCT in the diagnosis of obstructive jaundice

Objective:To explore the value of multiplanar reconstruction(MPR) with multislice spiral CT(MSCT) in the diagnosis of obstructive jaundice.Methods:MSCT enhancing scanning was performed in 33 cases with obstructive extrahepatic bile duct diseases .The scanning parameters were 10mm collimation and interval.The row data of hepatic parenchymal phase was first reformatted to bring out axial source images(ASI) with a 2.5mm thickness and 1.25mm reconstruction interval.The data of ASI were transferred to workstation and MPR was procesed.Results:The success rate of the MPR technique was 100%.MPR images demonstrated the cause of biliary obstruction in 32 cases accurately.The accuracy of location and characterization of the obstruction based on the reconstructive images with MPR was 100% and 97%,respectively.Conclusion:MPR images have high accuracy in demonstration of the location and nature of obstructive jaundice.The MPR images are valuable supplement to axial images.