[Show abstract][Hide abstract] ABSTRACT: Comparing with two dimensional (2D) imaging, both in diagnosis and treatment, three dimensional (3D) imaging has many advantages in clinical medicine. 3D reconstruction makes the target easier to identify and reveals the volume and shape of the organ much better than 2D imaging. A 3D digitized visible model of the liver was built to provide anatomical structure for planing of hepatic operation and for realizing accurate simulation of the liver on the computer.
Transverse sections of abdomen were chosen from the Chinese Visible Human dataset. And Amira software was selected to segment and reconstruct the structures of the liver. The liver was reconstructed in three-dimensions with both surface and volume rendering reconstruction.
Accurately segmented images of the main structures of the liver were completed. The reconstructed structures can be displayed singly, in small groups or as a whole and can be continuously rotated in 3D space at different velocities.
The reconstructed liver is realistic, which demonstrates the natural shape and exact position of liver structures. It provides an accurate model for the automated segmentation algorithmic study and a digitized anatomical mode of viewing the liver.
Preview · Article · Jan 2010 · Chinese medical journal
[Show abstract][Hide abstract] ABSTRACT: To develop a technique for converting computed tomography (CT) data into a fully three-dimensional (3D) virtual reality (VR) environment. Preoperative simulation in 3D VR facilitates liver resection owing to the ability to view the tumor and its relative vessels.
3D-reconstruction of the liver was restored from spiral CT data by using LiVirtue software and the Dextrobeam (Volume Interactions Pte Ltd, Singapore) was applied to view this 3D model in the VR environment. In order to design a rational plan of operation, the liver and its anatomic structure were reconstructed to illuminate the location of the tumor and its related vessels.
In our series of 38 hepatic resections, there was no significant difference between preoperatively calculated volumes of virtual resection part and actual volumes of resected specimen's weight. The LiVirtue can provide accurate and rapid results of individual hepatic volume and the character of anatomy structures. These models can be viewed and manipulated in the VR environment and on a personal computer. This preoperative simulation allowed surgeons to dissect the liver with reduced complications. Preoperative planning and intra-operative navigation based on this technique ensured the safety of liver resection.
3D models of the liver and its detailed structure articulate the possibility of intricate liver resection and the risk of the operation. This preoperative estimation from a 3D model of the liver benefits complicated liver resections greatly.
Preview · Article · Nov 2009 · International Journal of Surgery (London, England)