Puncture path planning method in CT guided liver tumor radiofrequency ablation

Abstract

The invention discloses a puncture path planning method in CT guided liver tumor radiofrequency ablation. The method comprises the steps that three-dimensional structures of the liver tumor, the liverand key anatomical structures (large vessels, the lung, the heart, the stomach, the kidney, the gallbladder, skin and bones) are rapidly and automatically extracted from a CT sequence scanning imagein the liver tumor radiofrequency ablation, the end point of a puncture path is worked out, N points on the skin serve as potential starting points of the puncture path, N potential puncture paths areformed by the potential starting points of the puncture path and the end point of the puncture path, M potential puncture paths meeting the unreasonable potential puncture path conditions are removed, K alternative potential puncture paths (K=N-M) are left, scores under all score criteria are calculated for the K alternative potential puncture paths separately, comprehensive scores of all the alternative potential puncture paths are calculated finally, and the alternative potential puncture path with the highest comprehensive score serves as the output result of the puncture path planning method in the CT guided liver tumor radiofrequency ablation.

Description

technical field [0001] The invention belongs to the technical field of image processing, in particular to a method for planning a puncture path in CT-guided radiofrequency ablation of liver tumors. Background technique [0002] CT (Computed Tomography, computerized tomography imaging) guided radiofrequency ablation has been applied in the minimally invasive treatment of clinical liver tumors. CT guided radiofrequency ablation of liver tumors is to insert radiofrequency electrodes (ablation needles) into liver tumors under the guidance of CT images. As a heat source, the center heats the tumor tissue to a higher temperature within a certain period of time to achieve complete coagulation and necrosis of the tumor immediately, thereby directly killing the tumor in situ. Ensuring that the needle tip of the ablation needle accurately penetrates into the tumor internal target is a key link in CT-guided radiofrequency ablation of liver tumors, which directly affects the treatment e...

AI Technical Summary

Problems solved by technology

Ensuring that the needle tip of the ablation needle accurately penetrates into the tumor internal target is a key link in CT-guided radiofrequency ablation of liver tumors, which directly affects the treatment effect. Based on the personal experience of clinicians, there is a need for computer-aided puncture path planning

However, the existing computer-aided puncture path planning method has the problems of slow speed and low automation level, and it is difficult to apply to puncture path planning in CT-guided radiofrequency ablation of liver tumors

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