摘要
目的评价螺旋CT三维重建技术在高位复杂性肛瘘的诊断意义。方法 18例高位复杂性肛瘘患者,所有患者均由肛瘘外口注人40%碘化油或76%泛影葡胺后,进行连续薄层平扫及增强扫描,并将扫描后的轴位片传至工作站进行MPR、MIP及曲面三维重建等后处理。并与手术中探查结果比对。结果 18例患者均明确显示肛瘘影像,与手术对照的符合率分别为:2-3个窦道侧支88.1%(37/42),脓肿及脓腔89.5%(17/19),瘘外口100%(18/18),瘘内口(17/21),瘘内口诊断的准确性80.9%,灵敏度94.4%,特异度91.0%。结论 CT的多种扫描方法和多种重建技术结合,可以清晰地显示瘘道形态、长度、侧支、边缘及走行和死腔窦道情况,特别是瘘内口的准确定位对制定手术方案提高治愈率有很大的帮助。
Objective To evaluated the diagnosis efficacy of spiral CT 3-D reconstruction in high complex anal fistula. Methods 18 patients with high complicacy anal fistula were in this study. All patients were proceed continuous lamella plain scan and enhancement scanning after injected 40% lipiodol or 76% meglumine diatrizoate from external open. Axial view pictures were transfered to the work station for MPR, MIP and toroidal 3-D construction postprocessing, then compare to the finding in operation. Results All the patients were showed the better anal fistula image. Compared to the finding in operation, the coincidence individually is： 2-3 collateral branch fistulas is 88.1%（37/42）, abscess cavity is 89.5%（17/19）, external open of fistula is 100%（18/18）, internal open is 80.9%（17/21）, sensitivity is 94.4%, specificity is 91.0%. Conclusion Combined with diverse CT scanning approaches and reconstruction technique, we can clearly display the shape, length, collateral branch, margin, track, dead space and sinus of anal fistula, especially accurately localize the internal open which can help to make an operation plan and increase the recovery rate.
出处
《中国CT和MRI杂志》
2011年第1期43-44,50,共3页
Chinese Journal of CT and MRI
