摘要
目的评价多层螺旋CT(MSCT)及其后处理技术对十二指肠肿瘤的诊断价值。方法回顾性分析13例经手术病理证实的十二指肠肿瘤的MSCT表现。MSCT检查采用GE Light speed 16层CT,增强后图像进行1.25 mm薄层重建后传入工作站进行后处理,MSCT后处理技术包括多平面重组(MPR)、最大密度投影(MIP)及CT仿真内镜(CTVE)。结果本组中2例行胃十二指肠镜检查,11例行剖腹探查或病灶手术切除。病理诊断:腺癌9例、间质瘤2例、腺瘤2例。腺癌是最多见的十二指肠肿瘤,常发生在降段乳头周围,主要CT表现为十二指肠腔内肿块伴肠腔不规则缩窄,病灶轻中度强化;间质瘤为形状不一的较大肿块,但少见肠梗阻征象,增强扫描明显强化;腺瘤体积较小,多为乳头状或息肉状结节,虽为良性肿瘤但有恶变倾向。结论MSCT结合后处理技术能有效评价十二指肠肿瘤。
Objective To evaluate the value of multi-slice CT （MSCT） and post-processing techniques in the diagnosis of duodenal tumors. Methods Thirty-three patients with duodenal tumors confirmed by endoscopic biopsy or surgical pathology were underwent the scanning with GE Lightspeed 16 CT. Source images were reconstructed into images with slice-thickness of 1.25 mm and were transferred a workstation with which post-processing was conducted. The post-processing included multiple planar reconstruction （MPR）, maximal intensity projection （MIP） and CT virtual endoscopy （CTVE）. Results Of the 13 patients, there were adenocarcinoma （nine cases）, duodenal stromal tumor （ two cases）, and Brunner＇s adenoma （ two case）. Adenocarcinoma predominated among.primary malignant tumors which mostly locating around the peripapilla region and in the descending portion of duodenum. It was manifested as local irregular constriction of cavity, accompanied with moderate enhancement of soft tissue mass. Stromal tumor was showed as massive mass with heterogeneity, with no obvious duodenal obstruction. Brunner＇s adenoma was a benign tumor, but it tended to malignant change. In the group, two patients were pathologically diagnosed by gastroduodenoscopic -biopsy, the others by laparotomy. Conclusion MSCT and post-processing techniques is helpful in demonstrating duodenal tumors.
出处
《福建医药杂志》
CAS
2008年第4期106-107,共2页
Fujian Medical Journal
