Tissue ablation evaluation system for laser ablation system based on nuclear magnetic resonance guidance

Abstract

The invention provides a tissue ablation evaluation system for a laser ablation system based on nuclear magnetic resonance guidance. The tissue ablation evaluation system comprises a three-dimensionalstructure reconstruction module, a temperature acquisition module, an image fusion module, an ablation calculation module, a judgment and feedback module and an evaluation module, wherein the ablation calculation module uses a special formula (formula), wherein E(n-i) is accumulated ablation amount of a small volume with the label of n when the temperature acquisition module is called for the ithtime, Tn-i is kelvin temperature of the small volume with the label of n in a fused image for the ith time, Sn is an average gray value of the small volume with the serial number of n, and (formula).

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a tissue ablation evaluation system based on a nuclear magnetic resonance-guided laser ablation system. Background technique [0002] The research on laser ablation to remove dysfunctional or hyperplastic tissue has made great progress since the 1980s. Through laser irradiation, the temperature of the target area is raised. When the tissue is irreversibly damaged due to temperature rise, is ablated. Although postoperative doctors can roughly estimate the size of the ablation area from MRI or CT images, they have limited understanding of the formation process and final size and shape of the ablation area during surgery. Therefore, it is particularly important to select an appropriate and accurate evaluation system to estimate the ablation area in vivo. [0003] The existing evaluation system has major defects in real-time, accuracy and postoperative feedback, which can...

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Problems solved by technology

[0003] The existing evaluation system has major defects in real-time, accuracy and postoperative feedback, which cannot meet the actual needs. Therefore, the present invention is based on the fast and comprehensive characteristics of nuclear magnetic resonance imaging and the supporting cumulative ablation volume algorithm. A tissue ablation evaluation system for MRI-guided laser ablation systems

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