Pulse intermittent microwave output type less-carbonization ablation regulation and control method based on tissue heat absorption rate

Abstract

The invention discloses a pulse intermittent microwave output type less-carbonization ablation regulation and control method based on a tissue heat absorption rate, which comprises the following steps: S1, performing differential scanning calorimetry phase change analysis on a tissue sample to obtain a DSC curve; s2, selecting a proper threshold temperature T according to the curve; s3, acquiring time t required for heating the tissue to the temperature threshold; and S4, establishing an intermittent microwave ablation mode taking t as pulse time, performing microwave ablation simulation and actual ablation according to the set intermittent ablation mode, and selecting an optimal microwave ablation mode. A pulse intermittent microwave ablation mode is provided, carbonization components can be greatly reduced, accordingly, side effects such as inflammation and fever are reduced, and the postoperative life quality of a patient is improved; and carbonization components can be greatly reduced, so that the effective range of microwave ablation is expanded, the axial ratio of a microwave ablation area is increased, and the ablation area is closer to a spherical shape and is closer to a treatment target pursued by a clinician.

Description

technical field [0001] The invention relates to the technical field of microwave ablation therapy, in particular to a pulse-intermittent microwave output type carbonization-less ablation control method based on tissue heat absorption rate. Background technique [0002] During microwave ablation, direct energy deposition within a limited range of action can lead to excessively high temperature in the tissue center around the microwave antenna, resulting in highly dry carbonized tissue. These carbonized components will hinder the heat conduction of the antenna, thereby limiting the area of ​​the solidification zone. In addition, during the microwave ablation of some organs such as the spleen, the extrusion and avulsion of the carbonized tissue on the surrounding tissue during the needle extraction process will cause bleeding, and the carbonized components will also cause side effects such as systemic inflammation and high fever. Contents of the invention [0003] The techni...

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Problems solved by technology

These carbonized components will hinder the heat conduction of the antenna, thereby limiting the area of ​​​​the solidification zone

In addition, in the process of microwave ablation of some organs such as the spleen, the extrusion and avulsion of the carbonized tissue on the surrounding tissue during the needle withdrawal process will cause bleeding, and the carbonized components will also cause side effects such as systemic inflammatory reactions and high fever.

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