title: [Construction of a three-dimensional digital model of the liver of Wuzhishan mini-pig].
abstract: OBJECTIVE
  To construct a three-dimensional (3D) liver model of Wuzhishan mini-pig for virtual liver surgeries.
  
  
  METHODS
  The biliary tree and hepatic arteries of Wuzhishan mini-pig were perfused with perchloroethylene and ethyl acetate along mixed with lead oxide, and the hepatic vein and portal vein were perfused with a mixture of dental base acrylic resin and lead oxide. The sectional images were acquired using a 64-slice spiral CT, and the 3D models of the portal vein, hepatic vein, biliary tree, hepatic arteries, and liver parenchyma were reconstructed using Mimics software; the resection image of the liver was also designed. The intrahepatic vascular cast was prepared by corroding the soft tissue with hydrochloric acid.
  
  
  CONCLUSIONS
  The intrahepatic vascular cast obtained fully retained the vascular architecture and displayed the fifth- and sixth-level branches of the hepatic vein and portal vein and the third- and fourth-level branches of the artery and bile duct. The 3D model of liver allowed stereoscopic and accurate display of the third- and fourth-level branches of the hepatic vein and portal vein and the second- and third-level branches of the artery and bile duct. The 3D model showed fewer branches but represented the structural distribution identical to the cast. The 3D model could clearly display the spatial relationship between the vasculature and the soft tissue in virtual resection of the liver tissues, and thus provides a useful model for training of laparoscopic liver resection.
authors.affiliation: School of Nursing, Southern Medical University, Guangzhou 510515, China.E-mail:zhanglili_gz@ 126.com.
authors.forename: Lili
authors.initials: L
authors.lastname: Zhang
authors.forename: Jujiao
authors.initials: J
authors.lastname: Xiao
authors.forename: Guangwei
authors.initials: G
authors.lastname: Xu
authors.forename: Xiangxue
authors.initials: X
authors.lastname: Kong
authors.forename: Maoqing
authors.initials: M
authors.lastname: Fu
authors.forename: Zhanglin
authors.initials: Z
authors.lastname: Wang
authors.forename: Jianyi
authors.initials: J
authors.lastname: Li
mesh_terms: D000818:Animals; D001652:Bile Ducts; D006499:Hepatic Artery; D006503:Hepatic Veins; D021621:Imaging, Three-Dimensional; D008099:Liver / Q000033:anatomy & histology*; D008953:Models, Anatomic; D011169:Portal Vein; D013552:Swine; D013556:Swine, Miniature; D036542:Tomography, Spiral Computed