Liver tumor ablation postoperative three-dimensional space curative effect evaluation method and system

Abstract

The invention discloses a liver tumor ablation postoperative three-dimensional space curative effect evaluation method and system, and the method comprises the steps: obtaining a medical image map ofa patient, and preprocessing the medical image map; performing image segmentation and three-dimensional modeling on the medical image map to obtain a preoperative liver region, a preoperative liver tumor region, a postoperative liver region and a postoperative ablation region; performing global registration on the preoperative liver region and the postoperative liver region by using a CPD point set registration algorithm to obtain a transformation matrix, and then calculating a registration result tumor region corresponding to the preoperative liver tumor region after the ablation operation;performing extraction and local registration on the common features, and then adjusting a tumor region of a registration result; and calculating the distance between the postoperative ablation area and the boundary of the registration result tumor area, and visually displaying the distance in a three-dimensional space. The invention can assist a doctor in evaluating the curative effect after ablation, and lays a foundation for making a follow-up treatment scheme of a patient.

Description

technical field [0001] The invention belongs to the field of ablation therapy, and in particular relates to a three-dimensional spatial curative effect evaluation method and system after liver tumor ablation. Background technique [0002] In recent years, image-guided percutaneous thermal ablation has become one of the most promising minimally invasive treatments for solid tumors such as liver, kidney, and breast. Among them, microwave ablation is guided by ultrasound, CT and other images. The ablation needle is inserted into the tumor, and the release of electromagnetic waves causes local area polar molecules to vibrate and rub to generate high temperature, and finally achieves the purpose of inactivating the tumor. Compared with traditional surgery, it has the advantages of small trauma, good curative effect, fast recovery, repeatability, low cost, and can improve the immune function of the body. It can achieve good curative effect of completely inactivating tumors without...

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Problems solved by technology

However, this type of algorithm only considers the global deformation of the organ, and has certain limitations for the evaluation of ablation therapy with large and uneven local deformation.

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