胆道结石的CT平扫诊断与限制

目的:应用薄层CT平扫技术提高胆道结石检出率.材料和方法:回顾性分析有完整CT及B超检查资料且经手术证实的胆道结石96例,比较分析不同扫描技术对胆道结石的检出率.结果:胆囊结石53例,常规10ram层厚扫描漏诊12例,检出率为77.35%,局部追加3mm薄层扫描,漏诊5例,检出率为90,57%,B超漏诊1例,检出率为98.1l%;胆管结石43例,常规10mm扫描漏诊13例,检出率为69.98%,局部加扫3mm薄层,漏诊5例,检出率为88.37%,B超漏诊8例,检出率为81.40%.结论:3ram薄层CT平扫可以大大提高胆道结石的检出率.薄层扫描漏诊的主要原因是①部分结石密度与胆汁相似,②CT对泥沙样结石的空间分辨率较差.

Diagnosis and limitation of CT Scaning of cholelithiasis

Purpose: To improve the ability in diagnosis of with CT Plain Scaning.Materials and Methods: 96 surgical proved cases witch had complete CT and Utrasound data were retrospectively analyzed.The inequality detect rate of biliary calculi were analyzed with different method: routine scan plan with 10mm collimate.;appendant scan plan with 3mm collimate.Results: 53 cases ill with cholecystolithiasis witch underwent routine scan with 10mm collimate missed diagnosis 12 cases,the detected rate was 77.35%.when they w...