Application of a medical image processing system in liver transplantation.pdf

Original Article/Transplantation
Application of a medical image processing
system in liver transplantation
Chi-hua Fang, Xiao-feng Li, Zhou Li, Ying-fang Fan, Chao-min Lu
Yan-peng Huang and Feng-ping Peng
Guangzhou, China
BACKGROUND: At present, imaging is used not only to show KEY WORDS: computed tomography;
the form of images, but also to make three-dimensional (3D
digital reconstruction;
reconstructions and visual simulations based on original data
simulation surgery;
to guide clinical surgery. This study aimed to assess the use of
liver transplantation
a medical image-processing system in liver transplantation
surgery
METHODS: The data of abdominal 64-slice spiral CT scan Introduction
were collected from 200 healthy volunteers and 37 liver cancer
patients in terms of hepatic arterial phase, portal phase, and
rogression liver transplantation has been rap
hepatic venous phase. A 3D model of abdominal blood vessels
with the development of surgical techniques in
including the abdominal aorta system, portal vein system, and
recent years. At present, liver transplantation is
inferior vena cava system was reconstructed by an abdominal the preferred treatment for end-stage liver diseases u
image processing system to identify vascular variations. Then, However, the complexity of the liver in view of its
a 3D model of the liver was reconstructed in terms of hepatic internal structure and its vascular system makes
segmentation and liver volume was calculated. The Freeform transplantation the most challenging among all
modeling system with a PHANTOM force feedback device was
used to simulate the real liver transplantation environment, i
surgeries on the liver. Preoperative images by plain CT
which the total process of liver transplantation was completed Scanning together with other examinations on
aow
surgeons to establish rough views of the anatomical
RESULTS: The reconstructed model of the abdominal blood
vessels and the liver was dearly demonstrated to be three- T Pathological structure of the liver, which is of little
dimensionally consistent with the anatomy of the liver, help in the Preoperative evaluation of the risk of
in which the variations of abdominal blood vessels were transplantation. There is an urgent need to make an
identified and liver segmentation was performed digitally In accurate comprehensive assessment of liver disease, blood
the model, liver transplantation was simulated subsequently, vessels, and bile duct with non-invasive or minimal
and different modus operandi were selected successfully.
invasive imaging technology in order to provide a basis
CONCLUSION: The digitized medical image processing for surgeons to evaluate the possibility, the difficulty, and
system may be valuable for liver transplantation
the risk of operation and to make sensible preoperative
(Hepatobiliary Pancreat Dis Int 2010; 9: 370-375) Prepa xanto digitized models of abdominal blood vessels and livers
of donors and recipients based on abdominal 64-slice
spiral CT scan data with a digital image processing
system, establish an environment for visually simulated
surgery, and perform visually simulated surgery in the
Author Affiliations Department of Hepatobi