Method for precisely simulating radiofrequency ablation technology by utilizing ellipsoid to cover tumor

Abstract

The invention relates to a liver tumor radiofrequency ablation technology, and aims at providing a method for precisely simulating radiofrequency ablation technology by utilizing ellipsoid to cover tumor. The method for precisely simulating radiofrequency ablation technology by utilizing ellipsoid to cover tumor comprises the following steps: preprocessing tumor images; clustering the tumor images into a plurality of ellipsoidal subclasses under reasonable constraint conditions; calculating the minimal coverage ellipsoids of each obtained class; giving an initial radiofrequency scheme by utilizing the number of the minimal ellipsoids automatically determined; determining an adjustable conical area, and manually adjusting the initial radiofrequency direction so as to completely keep away from great vessels and ribs, thus completing the establishment of the final radiofrequency scheme. According to the method, the purpose of designing the radiofrequency treatment scheme before operation can be realized, three-dimensional navigation can be conducted during operation, the adopted optimized algorithm can help a doctor more precisely and efficiently do operation, the harm of the operation to normal tissues can be reduced as far as possible, and the peripheral organs can be avoided, so that the radiofrequency ablation operation is safer and more effective.

Description

technical field [0001] The invention relates to the technical field of radiofrequency ablation of liver tumors, in particular to a method for accurately simulating radiofrequency ablation techniques by using ellipsoids to cover tumors. Background technique [0002] Tumor radiofrequency ablation is a new minimally invasive treatment technology for solid tumors that has emerged in recent years. Compared with traditional treatment, it has the advantages of high curative effect, less trauma, less pain, faster recovery, less risk, and wide indications. It is called green treatment technology by domestic and foreign experts. Tumor cells have poorer tolerance to heat than normal cells. Local heating to 39-40°C can stop their division. When it reaches 41-42°C, it can cause cancer cell death or DNA damage. Above 49°C, irreversible damage occurs. cell damage. [0003] The bundled radio frequency electrodes emit high frequency radio frequency waves to excite tissue cells for plasma o...

AI Technical Summary

Problems solved by technology

Traditional radiofrequency ablation is performed under the guidance of two-dimensional ultrasound. Due to the fuzzy and localized imaging characteristics of ultrasound navigation, it is difficult to accurately grasp the overall information of the target tumor, such as tumor size and shape, which may easily lead to lesions Characterized by incomplete ablation, which is one of the most important causes of cancer cell recurrence

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