摘要
目的:研究胆总管扩张螺旋CT曲面重建技术(CPR)的操作方法、临床应用价值及其局限性。方法:收集20例胆总管扩张患者,将其1~3mm薄层扫描轴位源像(ASI)传到工作站后处理,行扩张胆总管曲面重建成像,作任意曲面显示所要观察的扩张胆总管。经手术病理及随访证实,评估CPR对胆总管扩张病因的定位与定性价值。结果:CPR对扩张胆总管的成像率达100%,均能显示完整的扩张胆总管及梗阻部位,定位准确率达100%,定性准确率达90%。结论:CPR能将不在同一平面的扩张胆总管显示于一个平面上,更好地显示扩张胆总管的连续性,可直观地显示胆总管扩张程度、部位及梗阻端形态,对诊断及鉴别诊断有重要价值。
Objective:To study the operating method,clinical application and limitation of curved planar reformation(CPR) technique of multislice helical CT(MSCT) in bile duct dilatation.Methods:Twenty patients were collected,who were all displayed by MSCT and proved by histopathology and following-up.Thin scanning from 1~3mm were done,axial source images acquired were transferred to workstation for post-treatment and CPR was processed.We could observe the conditions of bile duct and evaluate the value of CPR in location and qualitation diagnosis of bile duct dilatation.Results:In the group of patients,the success rate of CPR technique was 100%,the accuracy of location and characterization of the obstruction based on the reconstructive images with CPR was 100% and 90% (displaying rate and accurate locating rate of CPR was 100%,the correct qualitative diagnosis was 90%).Conclusion:The images of bile duct dilatation in different plane could be displayed well on a single image by CPR,which could directly suggest the degree,location and shape of bile duct dilatation,multislice CT CPR was valuable in both diagnosis and differential diagnosis of bile duct dilatation.
出处
《中国中西医结合影像学杂志》
2005年第1期30-32,共3页
Chinese Imaging Journal of Integrated Traditional and Western Medicine