MEDICAL IMAGE-BASED METHOD FOR DECONSTRUCTING TISSUE ELEMENT MASS RATIO AND METHOD FOR ESTABLISHING GEOMETRIC MODEL

摘要

A medical image-based method for deconstructing a tissue element mass ratio and a method for establishing a geometric model. The method for deconstructing the tissue element mass ratio comprises: a step of approximating an element mass ratio of a tissue corresponding to unknown medical image data by means of medical image data corresponding to a tissue with a known element mass ratio. The method for establishing the geometric model comprises steps of: reading the medical image; defining the type of a tissue according to the method for deconstructing the tissue element mass ratio; deciding tissue grouping number; defining a tissue density by means of the conversion relation between the medical image and density; establishing a 3D encoding matrix carrying tissue and density information; and generating the geometric model. Deconstructing an organism tissue element mass ratio by means of the medical image data of a known tissue to be better approximated by the real situation when making voxel prosthesis can increase dose calculation accuracy and improve treatment quality.