[Study on the three dimensional hepatic virtual operation based on the data of 64-slice helical CT scanning].
OBJECTIVE
To study the surgery plan and simulation effect of the three dimensional (3D) hepatic virtual operation based on the data of 64-slice helical CT scanning and to probe the feasibility of the virtual operation based on the FreeForm Modeling System.


METHODS
The volunteer liver was scanned to collect two dimensional (2D) DICOM data of 64-slice helical CT scanning and the 3D hepatic and intrahepatic vessels model were reconstructed by MIMICS software. The reconstructed liver, the intrahepatic vessels model and the artificial tumor models were output into the FreeForm Modeling System in the STL format. The device PHANTOM with the characterization of dynamo-feedback was applied to make the operation on the 3D hepatic.


RESULTS
The spatial relationship between the tumour and the intrahepatic vessels were clearly observed by rotation and enlargement of the target. According to the operation principle, the left lobe of liver resection was simulated by manipulating the device PHANToM. Through the liver transparence surface, the intrahepatic vessels were easily distinguished. The operation procedure was accord with the clinic hepatic surgery. Meanwhile, during the operation, by adjusting the incision objective intensity, the dynamo-feedback intensity was definitely touched.


CONCLUSIONS
By using the FreeForm Modeling System,the hepatic operation procedure can be simulated ahead of time. The operation complication in the practical surgery can be anticipated and the individualization operation schema can be reasonable instituted.
Zhu
Xin-Yong
XY
Department of Hepato-biliary Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China.
Fang
Chi-Hua
CH
Bao
Su-Su
SS
Quan
Xian-Yue
XY
Jiao
Pei-Feng
PF
Zhong
Shi-Zhen
SZ
D000328:Adult; D005240:Feasibility Studies; D005260:Female; D006498:Hepatectomy / Q000379:methods*; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods; D008099:Liver / Q000000981:diagnostic imaging*; D008113:Liver Neoplasms / Q000601:surgery*; D036542:Tomography, Spiral Computed / Q000379:methods*; D014584:User-Computer Interface