成年国人大网膜多层螺旋CT应用解剖学研究

目的研究成人大网膜的多层螺旋CT解剖,探讨相关临床意义,为影像诊断和外科应用提供理论基础。方法利用成人腹部16层螺旋CT的横、冠、矢状断层及三维图像,观察大网膜的解剖分布、与周围脏器毗邻关系、血管的形态特点,探讨不同断面的显示优势以及临床应用。结果1.各种断面的优势:横断位在于观察大网膜的分布以及脂肪情况;冠状位在于观察血管情况;矢状位在于观察大网膜与邻近脏器的解剖毗邻关系。2.三维重建图像可满意地显示胃网膜静脉回流情况。3.胃结肠静脉(包括典型及非典型)出现率为67.2%;游离部具“游走性”:20.7%移位于上腹腔,17.2%偏右下腹腔分布;大网膜脂肪密度CT值为(-104.97±10.78)Hu,与皮下脂肪差别无统计学意义。结论胃网膜动静脉为寻找大网膜的标志,3种断面及三维图像相结合可充分显示大网膜的解剖学特征,并可为影像诊断、修复外科、胰腺及门静脉高压外科提供有价值的信息。

Applied Anatomic Study on MSCT of Greater Omentum in Chinese Adults

［Abstract］ Objective To study radiological_anatomy of greater omentum and to address the related clinical implications, and to provide anatomic data for the radiological diagnosis and surgical application of greater omentum. Methods The anatomic distribution and morphology of the greater omentum as well as the anatomic relationship of the organs in the vicinity were analyzed by using axial, coronal, sagittal and 3D images from 16-detector row spiral CT scans of 60 individuals. We assessed the advantages of these images as well as the clinical significance. The data were recorded and analyzed by using SPSS115 software. Results 1. Advantages of three sections: axial section, the display of the fatty tissue and the anatomic distribution; coronal section, the vasculature; sagittal section, the anatomic relationship of neighbour organs. 2. Three-dimensional reformatted images showed the return of the gastroepiploic vein. 3. Gastrocolic trunk was revealed in 67.2% of cases. The free_hanging portion seemed to have the capability of ‘migration’: it located in the subphrenic spaces in 207% of cases and distributed in the right lower quadrant predominantly in 17.2% of cases. The CT value of fatty density within greater omentum was (-104.97±10.78)Hu and no statistical significance was found in the difference between greater omentum and the subcutaneous tissue. Conclusion Gastroepiploic vessel is the landmark for the location of greater omentum. Axial, coronal and sagittal sections together with 3D reconstruction images could produce a full display of greater omentum and provide valuable data for the radiologic