Smooth geometrical model establishing method based on medical image data

Abstract

The invention provides a smooth geometrical model establishing method based on medical image data, which comprises the following steps: inputting or reading the medical image data; establishing a three-dimensional medical image voxel model according to the medical image data; smoothing the three-dimensional medical image voxel model; and establishing a three-dimensional voxel prosthesis tissue model. The invention also provides another smooth geometrical model establishing method based on the medical image data, which comprises the following steps: inputting or reading the medical image data;establishing the three-dimensional voxel prosthesis tissue model according to the medical image data; and smoothing the three-dimensional voxel prosthesis tissue model. The smooth geometrical model establishing method provided by the invention is used for smoothing the three-dimensional medical image voxel model or the three-dimensional voxel prosthesis tissue model so as to be closer to the realsituations of human organs, thereby improving the dose calculation reliability to promote the treatment quality.

Description

technical field [0001] The invention relates to a method for establishing a geometric model, in particular to a method for establishing a smooth geometric model based on medical image data. Background technique [0002] With the development of atomic science, radiation therapy such as cobalt 60, linear accelerator, and electron beam has become one of the main means of cancer treatment. However, traditional photon or electron therapy is limited by the physical conditions of the radiation itself. While killing tumor cells, it will also cause damage to a large number of normal tissues along the beam path; in addition, due to the different sensitivity of tumor cells to radiation, traditional radiation therapy Treatment for more radioresistant malignant tumors (eg glioblastoma multiforme, melanoma) is often less effective. [0003] In order to reduce radiation damage to normal tissues around the tumor, the concept of target therapy in chemotherapy (chemotherapy) has been applied...

AI Technical Summary

Problems solved by technology

In the field of neutron capture therapy, how to establish the geometric model required by MCNP based on medical image data, that is, the lattice model or voxel prosthetic tissue model required by the MCNP software input file, is a very important topic. Currently, the common MCNP The geometric models are all based on a small cube (voxel, voxel) as the basic element, corresponding to the information contained in the medical image, so the outline of the voxel model is presented like a ladder, such as Figure 4 , there is a certain degree of error with the surface contours of human organs and tissues, which in turn affects the reliability of dose calculation results

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