MSCT多平面及曲面重组技术诊断胃肠道脂肪瘤  

MSCT Multiplanar and Curved Planar Reconstruction for Gastrointestinal Lipomas

作　　者：王礼同[1] 李澄[1] 薛贞龙[1] 

机构地区：[1]扬州市第一人民医院影像科,江苏225001

出　　处：《放射学实践》2009年第6期633-636,共4页Radiologic Practice

摘　　要：目的:分析胃肠道脂肪瘤的CT特征,提高对本病的认识。方法:34例经临床或手术病理证实的胃肠道脂肪瘤患者均先行MSCT平扫,20例加增强扫描,并行多平面及曲面重组(MPR/CPR)成像;4例并行MRI平扫。分析胃肠道脂肪瘤的起源、肿块大小、边缘、密度等CT特征。结果:33例胃肠道脂肪瘤起源于粘膜下层,向胃肠腔内生长;1例空肠脂肪瘤起源于浆膜下层,向肠腔外生长。发病部位:胃7例,十二指肠3例,空肠及回肠17例,盲肠及升结肠7例,横结肠3例。CT表现为胃肠道内大小不等类圆形、卵圆形或分叶状低密度肿块,有包膜,边缘清楚,密度均匀,CT值一般在-80～-120HU之间,增强扫描肿块无强化。3例继发肠套叠,表现为套入部及鞘部与套入部头端卵圆形或不规则形低密度肿块。4例MRI表现为卵圆形高信号肿块。结论:轴面CT扫描配合使用MPR/CPR技术,可对胃肠道脂肪瘤及肠套叠作出明确诊断。Objective：To analyze the CT characteristics of gastrointestinal lipomas. Methods;Thirty-four cases of gastrointestinal lipomas confirmed clinically, surgically, or pathologically were examined with mutlislice spiral CT （MSCT）. The CT axial images were processed with multiplanar and curved planar reconstruction （MPR/CPR）. The CT characteristics of gastrointestinal lipomas such as origin, size, margin, density, etc were retrospectively analyzed. Four cases received MRI additionally. Results： Thirty three cases of gastrointestinal lipomas showed intracavitary growth, and originated from submucosa. One case originated from subserous layer of jejunum. Thirty-one cases were solitary. CT showed round or oval low-density masses. The range of CT value was --80-- 120HU with no enhancement after contrast. Intussusception was seen in 3 cases. High intensity masses were seen on MRI in 4 cases. Conclusion：The accurate diagnosis can be made with axial CT and MPR/CPR for gastrointestinal lipomas.

关 键 词：脂肪瘤 胃肠道 图像处理 计算机辅助 体层摄影术 X线计算机 

分 类 号：R735[医药卫生—肿瘤]