CAJ | 학술논문

目的：构建肝外胆管供血动脉三维可视化模型，研究基于亚毫米CT数据精细管道分割新方法。方法把基于体绘制交互的图像分割新算法作为一个分割插件整合到医学图像三维可视化系统（MI-3DVS）中，再将10名受检者的腹部64层亚毫米CTA数据导入MI-3DVS，程序化构建肝外胆管及供血动脉的3D模型。然后对3D模型进行缩放、旋转、融合拆分以及透明化显示等操作，观察、分析3D模型中的肝外胆管供血动脉来源、走行、分布特点。结果10例肝外胆管血供3D模型立体感强，可精确显示肝动脉的4到5级分支、胆囊动脉的2级分支、胰十二指肠动脉弓及门静脉后动脉；胆道3D模型可清晰显示肝内胆管、左右肝管、胆囊、肝总管、胆总管等胆道各部分。结论基于体绘制交互的分割方法能够对肝外胆管供血小动脉进行分割、提取；使用MI-3DVS重建的3D模型能够真实反映个体化的肝外胆管及供血动脉立体解剖结构。
목적：구건간외담관공혈동맥삼유가시화모형，연구기우아호미CT수거정세관도분할신방법。방법파기우체회제교호적도상분할신산법작위일개분할삽건정합도의학도상삼유가시화계통（MI-3DVS）중，재장10명수검자적복부64층아호미CTA수거도입MI-3DVS，정서화구건간외담관급공혈동맥적3D모형。연후대3D모형진행축방、선전、융합탁분이급투명화현시등조작，관찰、분석3D모형중적간외담관공혈동맥래원、주행、분포특점。결과10례간외담관혈공3D모형입체감강，가정학현시간동맥적4도5급분지、담낭동맥적2급분지、이십이지장동맥궁급문정맥후동맥；담도3D모형가청석현시간내담관、좌우간관、담낭、간총관、담총관등담도각부분。결론기우체회제교호적분할방법능구대간외담관공혈소동맥진행분할、제취；사용MI-3DVS중건적3D모형능구진실반영개체화적간외담관급공혈동맥입체해부결구。
Objective To construct a three-dimensional (3D) model of arteries supplying the extrahepatic bile duct with a new segmentation algorithm based on submillimeter CT data. Methods The new image segmentation algorithm based on interactive volume rendering was integrated into Medical Image Three-Dimensional Visualization System (MI-3DVS) as an intersected plug-in. The abdominal submillimeter CTA data of 10 patients were imported into MI-3DVS and the 3D model of the extrahepatic bile duct and its supplying arteries were constructed. The 3D model was zoomed in, zoomed out and spinned for observation and analysis of the arteries supplying the extrahepatic bile duct. Results The 3D models of the blood supply to extrahepatic bile duct allowed stereoscopic, and accurate display of the fourth-and fifth-level branches of the hepatic artery, the second-level branches of the cystic artery, the pancreatic duodenal artery arch and the retroportal artery. The 3D models also provided a clear vision of the biliary structures including the hepatobiliary tract, the left and right hepatic ducts, gallbladder, the liver duct, and the common bile duct. Conclusions Based on the segmentation method of interactive volume rendering, the CT data of the arterioles supplying the extrahepatic bile duct can be extracted and segmented for 3D reconstruction to display the three-dimensional anatomical structures of the extrahepatic bile duct and its supplying arteries.