MSCT后重组技术诊断十二指肠乳头旁憩室的研究

Diagnostic Value of MSCT Reconstruction Techniques in Periampullary Diverticula

目的探讨MSCT后重组技术对十二指肠乳头旁憩室(PAD)的诊断价值。资料与方法搜集经MSCT检查发现的22个PAD,均经手术或内镜证实。MSCT检查前患者禁食6～8h,扫描前1h口服400ml水充盈胃肠道。双期增强扫描图像进行0.625mm薄层重组,采用多平面重组(MPR)后处理。结果22个PAD直径为0.8～5.0cm,均位于十二指肠系膜缘,表现为胰头右后方囊袋状影,与胰头交界处边缘锐利。7个憩室内有液-气平面,11个表现为单纯气体影,4个表现为筛板状或网格状结构。7例合并胆管扩张,1例合并胰管扩张,1例合并出血。结论MSCT后重组技术有助于对PAD的诊断,明确PAD与周围组织的关系,同时有助于同十二指肠内气体及十二指肠球部相鉴别。

Objective To study the value of MSCT in the diagnosis of Periampullary diverticula（PAD）. Materials and Methods 21 patients suspected with PAD by MSCT,proved by duodenoscope or operation,were retrospectively analyzed. Dual-phase CT scan was performed and a thinckness of 0.625 mm was used for image construction. The reconstruction technique of MPR （Multiplanar Reconstruction） was used. Results The diameters of the 22 PAD were ranged from 0.8 cm to 5 cm. The cystiform nodose lesions located posterior and lateral to the head of the pancreas. In the cavity of the PAD,seven appeared air-fluid level,eleven appeared air bubble,and four appeared netting image. Conclusion MSCT with reconstruction techniques was valueable in the evaluation of periampullary diverticula and its complication,and was helpful in differentiating with duodenal bulb and the air in the dodecadactylon.