[Study on visualized virtual surgery of living-related donor liver transplantation].
OBJECTIVE
To investigate the significance of three dimensional visualization and virtual surgery system in living related donor liver transplantation surgery.


METHODS
Two patients suffered biliary calculi were scanned by 64 slice helical computer tomography (CT) on livers and the data were imported into medical image proceeding system (MIPS) for sequence. Man-made segmentation and true-up on the image from the data were carried out. Three dimensional (3D) models of the liver and the intrahepatic vessels were reconstructed by VTK software respectively. The models were exported with format STL from it and then were imported into the FreeForm Modeling System for smoothing and modifying. At last, living related donor liver transplantation were simulated with the force-feedback equipment (PHANToM).


RESULTS
It had great verisimilar image for the reconstructed 3D liver models with artery, hepatic vein, portal vein and bile duct. By seeing through liver, it had high fidelity and strong 3D effect for the intrahepatic artery, hepatic vein, portal vein and bile duct, and their spatial disposition and course and co-relationship were shown clearly. In the virtual surgery system, the virtual scalpel could be manipulated on 3D liver model with PHANToM. The simulating effect was the same as the clinic operation for living related donor liver transplantation.


CONCLUSIONS
The visualized liver model reconstructed is 3D and verisimilar, and it is helpful to design reasonable scheme for liver transplantation. It can improve the surgical effect, decrease the surgical risk, reduce the complication, enhance the communication between doctor and patient through designing surgical plan and demonstrating visualized operation before surgery.
Fang
Chi-Hua
CH
Department of Hepato-biliary Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China. fangch_dr@126.com
Wu
Dong-Bo
DB
Huang
Yan-Peng
YP
Bao
Su-Su
SS
Lu
Chao-Min
CM
Liao
Qi-Guang
QG
Pan
Jia-Hui
JH
D000328:Adult; D003198:Computer Simulation; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D008099:Liver / Q000000981:diagnostic imaging*; D016031:Liver Transplantation; D019520:Living Donors; D008953:Models, Anatomic; D036542:Tomography, Spiral Computed; D014584:User-Computer Interface