[Virtual surgery of cholecystotomy for calculus removal and cholecystectomy in patients with cholecystolithiasis].
OBJECTIVE
To study the two-dimensional (2D) image segmentation, three-dimensional (3D) reconstruction and virtual surgery of cholecystectomy based on the 2D image data of the liver, biliary track and cholecystolithiasis obtained by 64-slice spiral CT.


METHODS
The image data of the liver, biliary track and cholecystolithiasis were obtained by 64-slice spiral CT scanning. Segmentation and automatic extraction of the images were performed using auto-adapting region growing algorithm. 3D reconstruction of the segmented data was carried out using MIMICS10.0 and self-designed software, and the data of the 3D model of the liver with the billiary tract were imported into FreeForm Modeling System for registration and smoothing. Virtual surgery of cholecystotomy for calculus removal and cholecystectomy were performed with Phantom.


RESULTS
The auto-adapting region growing algorithm allowed rapid image segmentation, and the 3D model of the liver based on the segmentation data clearly displayed vivid 3D structures of the liver. Virtual operations of cholecystectomy could be performed in the FreeForm Modeling System.


CONCLUSIONS
The algorithm we proposed can correctly and rapidly complete image segmentation and 3D reconstruction of cholecystolithiasis from the data 64-slice spiral CT, and allows virtual operations on the gallbladder.
Fang
Chi-hua
CH
Departmeny of Hepatobiliary Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China. fangch_dr@126.com
Tang
Yun-qiang
YQ
Lu
Chao-min
CM
Liu
Yu-bin
YB
Peng
Feng-ping
FP
Bao
Su-su
SS
D002763:Cholecystectomy; D041761:Cholecystolithiasis / Q000000981:diagnostic imaging / Q000601:surgery*; D002767:Cholecystostomy; D003198:Computer Simulation; D003194:Computer-Assisted Instruction / Q000379:methods; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods; D025321:Surgery, Computer-Assisted / Q000379:methods*; D036542:Tomography, Spiral Computed; D014584:User-Computer Interface