| abstract |
The invention discloses a method for establishing a finite element model for preoperative simulation of liver tumor microwave ablation, and belongs to the field of medical image modeling. The method includes the following steps: step 1, performing CT scan on the patient's abdomen before the ablation operation to obtain a tomographic image around the liver; step 2, using a combination of methods such as threshold segmentation and boundary extraction for each slice of the tomographic image in the medical image three-dimensional visualization module Manually outline and segment the liver, tumor and blood vessel models; step 3, smooth the surface of the segmented liver, tumor and blood vessel models in the reverse modeling module; step 4, smooth the smoothed liver in the multiphysics simulation module , the tumor and blood vessel models are divided into meshes, and the finite element model is established. The present invention can solve the problem that it is difficult to formulate a suitable ablation heat dose and adjust the way of microwave ablation needle insertion for tumors adjacent to blood vessels and endangered organs. |