Peri-pancreatic Lymphatics : Evaluation with 3. 0T MR imaging(fat-suppressed T2-weighted images with a three-dimensional spectral pre-saturation with inversion recovery volume isotropic turbo spin echo acquisition)

目的腹盆神经的详细解剖仅限于尸体。胰胆管结石的磁共振成像尚未见报道。本研究的目的是评估正常胰胆管造影在3。材料与方法对27例疑有肝脏或胰胆系疾病并诊断为良性病变的患者进行0-T MR成像。例如，在一个实施例中，肝囊肿、肝血管瘤）被评价为具有正常胰胆管炎的受试者。MR成像方案包括脂肪抑制T2加权图像，三维频谱预饱和，反转恢复容积各向同性快速自旋回波采集（SPIR VISTA）。为了进行图像解释，将胰头和肝十二指肠韧带周围的血管分为8个段。每个节段的可见性由2名观察员根据预定义的标准在5分置信量表上独立评定。观察者之间的一致性通过Kappa统计进行评估。最后意见达成一致。ResultsEvery segment可视化如下：100%的前上部、89%的前中部、85%的前下部、100%的上部和中部至下部后部以及腹腔动脉和上级肠系膜动脉之间的右侧部分，和肝十二指肠韧带周围区域的96%。良好或优秀的interobserver agreements determined. Conclusionpancreatobiliary在正常条件下，可以充分可视化脂肪抑制T2加权图像与三维SPIR VISTA。

PurposeDetailed anatomy of abdominopelvic lymphatics has been studied only in cadavers. There is no report regarding the MR imaging of pancreatobiliary lymphatics. The purpose of this study was to assess the visibility of normal pancreatobiliary lymphatics on 3. 0-T MR imaging.Materials and MethodsTwenty-seven patients who were suspected of hepatic or pancreatobiliary diseases and diagnosed as benign pathologies(e. g., hepatic cysts, hepatic hemangioma) were evaluated as subjects having normal pancreatobiliary lymphatics. The MR imaging protocol consisted of fat-suppressed T2-weighted images with a three-dimensional spectral pre-saturation with inversion recovery volume isotropic turbo spin echo acquisition(SPIR VISTA). For image interpretation, the lymphatics surrounding the pancreatic head and hepatoduodenal ligament were divided into eight segments. Visibility of each segment was rated independently by 2 observers according to predefined criteria on a 5-point confidence scale. Interobserver agreement was assessed by Kappa statistics. The final opinion was reached by consensus.ResultsEach segment was visualized as follows : 100% of the anterior upper portion, 89% of the anterior middle portion, 85% of the anterior lower portion, 100% of the upper and middle to lower posterior portions as well as the right side portion between the celiac and superior mesenteric arteries, and 96% of the surrounding area of the hepatoduodenal ligament. Good or excellent interobserver agreement was determined.ConclusionPancreatobiliary lymphatics under normal conditions could be sufficiently visualized on fat-suppressed T2-weighted images with a three-dimensional SPIR VISTA.