A three-dimensional reconstruction system for preoperative planning of virtual operation

Abstract

The invention belongs to the technical field of medical images and in particular relates to preoperative planning of a virtual operation system. The method comprises the steps of preprocessing a CT orMRI image, performing image segmentation on the denoised, smoothed and enhanced image, and performing void processing after segmentation to guarantee that the image is complete without lack of information; performing three-dimensional reconstruction on the segmented complete image. The three-dimensional reconstruction technology employs the improved MC algorithm and nine topological configurations are added to the 15 basic topological configurations in the original algorithm, so that the connection problem of the original algorithm is solved and a fitting curved surface is more complete and tends not to generate voids; finally smoothing is performed, so that the fitting curved surface is smoother and flatter; a reconstructed model can be directly applied to rear virtual operation cuttingand collision detection application. The system is applied to preoperative planning of virtual operation; the system enables people to analyze focus parts visually and conveniently; when being used for training doctors, the system enables the state of an illness to be analyzed visually and clearly, so that the success rate of operation is increased and operation risks are reduced.

Description

technical field [0001] The invention belongs to the technical field of computerized medical imaging, and in particular relates to a three-dimensional reconstruction system used for preoperative planning of virtual surgery. Background technique [0002] With the rapid development of science and technology in recent years, the virtual surgery system has become increasingly mature. A complete virtual surgery system should include geometric modeling, biomechanical modeling, cutting and collision detection, etc.; while 3D reconstruction belongs to geometric modeling and is used for Preoperative analysis of virtual surgery and construction of models to prepare for the next stage. [0003] General medical 3D reconstruction is divided into surface rendering and volume rendering. Volume rendering is not suitable for virtual surgery systems due to the large amount of calculation, cumbersome process and poor real-time performance. Therefore, virtual surgery systems generally use surfac...

AI Technical Summary

Problems solved by technology

[0004] The MC algorithm has the characteristics of high efficiency, convenience, and strong real-time performance; however, the MC algorithm also has many defects. The most common problem is that it is easy to produce holes when the triangular patches are connected to the fitted surface, and some line segments of the fitted surface are easy to bulge and easy to connect. Sharp points appear that make the surface rough

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