CAJ | 학술논문

目的探讨利用64排螺旋CT扫描数据进行肝脏及其内部管道和腹腔血管的计算机辅助三维重建的准确性及临床意义.方法利用64排螺旋CT薄层扫描正常人肝脏二维图像数据集,采用自主研发的医学图像处理系统对二维图像数据进行肝脏及其肝内管道、腹腔血管系统三维可视化重建,并对重建肝脏模型的体积与肝脏实际体积以及重建门静脉与64排螺旋CT后处理工作站采用容积再现法重建的门静脉进行对比研究.结果肝动脉、门静脉和肝静脉系统三维效果逼真,立体感强,可任意角度旋转、观察;能够显示肝内各主要管道系统的空间位置关系,并准确地反映肝脏实际体积及肝内管道系统的真实情况.通过调节肝脏的透明度可同时显示肝脏和肝内动静脉、门静脉分支和腹腔动脉系统.计算机重建后的门静脉与螺旋CT后处理工作站容积再现法重建的门静脉完全一致.结论计算机辅助的三维肝脏及其管道和腹腔血管系统能准确反映人体的真实结构,为肝脏的虚拟手术设计提供了可靠和真实的虚拟器官和血管系统.
목적 탐토이용64배라선CT소묘수거진행간장급기내부관도화복강혈관적계산궤보조삼유중건적준학성급림상의의.방법 이용64배라선CT박층소묘정상인간장이유도상수거집,채용자주연발적의학도상처리계통대이유도상수거진행간장급기간내관도、복강혈관계통삼유가시화중건,병대중건간장모형적체적여간장실제체적이급중건문정맥여64배라선CT후처리공작참채용용적재현법중건적문정맥진행대비연구.결과 간동맥、문정맥화간정맥계통삼유효과핍진,입체감강,가임의각도선전、관찰;능구현시간내각주요관도계통적공간위치관계,병준학지반영간장실제체적급간내관도계통적진실정황.통과조절간장적투명도가동시현시간장화간내동정맥、문정맥분지화복강동맥계통.계산궤중건후적문정맥여라선CT후처리공작참용적재현법중건적문정맥완전일치.결론 계산궤보조적삼유간장급기관도화복강혈관계통능준학반영인체적진실결구,위간장적허의수술설계제공료가고화진실적허의기관화혈관계통.
Objective To explore the accuracy and practical significance of the 3-dimensional (3D) reconstruction of the liver and the abdominal blood vessels based on the data of 64-slice spiral computerized tomography (64S-SCT). Methods The 2D images of the liver and the abdominal blood vessels were collected after TLC-scanning with 64S-SCT. The 3D images of the liver, hepatic internal duct system and the abdominal blood vessels were reconstructed by the medical image processing system. The volume of the 3D reconstructed liver was compared with that of the actual liver measured by the 64S-SCT, and the portal vein of the reconstructed liver model was compared with that reconstructed by the Mxview workstation based on the 64S-SCT data. Results The 3D models of the liver, hepatic internal duct system and abdominal blood vessels were vivid, and could be revolved and observed at any direction. The spatial relationship among main intrahepatic ducts was clearly displayed. The actual liver volume and the condition of the intrahepatic ducts were accurately demonstrated. The reconstructed liver, the branches of the hepatic artery and portal vein, and the abdominal blood vessels were simultaneously displayed by adjusting the transparency of the liver model. The portal vein of the reconstructed liver model completely matched that reconstructed by the Mxview workstation based on the 64S-SCT data. Conclusions The 3D models of the liver, hepatic internal duct system and abdominal blood vessels reflect the human anatomy structure, and provide reliable virtual organs and vessel system for virtual liver surgery.