Tissue ablation evaluation system based on MRI-guided laser ablation system
A technology of laser ablation and tissue ablation, applied in image analysis, image enhancement, instruments, etc., can solve problems that cannot meet actual needs
Active Publication Date: 2020-10-02
SINOVATION BEIJING MEDICAL TECH CO LTD
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[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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[0027] Taking a brain lesion with a volume of about 4 cubic centimeters as an example, in the tissue ablation evaluation system based on the MRI-guided laser ablation system of the present invention:
[0028] First, use the 3D structure reconstruction module to obtain CT images containing the patient's lesions, and use the 3D reconstruction software Arigin 3D Pro to perform 3D reconstruction of the lesions and surrounding tissues to obtain a 3D model of the lesions and their surrounding tissues. In the 3D model, the The volume of the lesion and the surrounding tissue is divided into several equal small volumes, for example, a small volume with a side length of 3 mm and a volume of 27 cubic millimeters, and a positive integer pair is used to obtain a small volume starting from 1, and the small volume of the lesion is contained in this embodiment. The volume is 187, and the small volumes without lesions are 138, totaling 325. The corresponding volumes of the small volumes contain...
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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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IPC IPC(8): G06T19/20G06T17/00G06T7/62G06T7/00
CPCG06T7/0012G06T7/62G06T17/00G06T19/20G06T2207/10081G06T2207/10088G06T2207/20221G06T2207/30096G06T2219/2012
Inventor 刘文博韩萌吴迪陈晗青
Owner SINOVATION BEIJING MEDICAL TECH CO LTD