Measurement method of tip power of microwave ablation antenna

Abstract

The invention relates to a measuring method for microwave ablation antenna pointed end power. Based on a physical platform formed by a microwave generator, a temperature measurement needle, an operating platform, a data acquisition instrument and a computer, the method includes the steps of setting a temperature measurement point distribution area, opening the microwave generator, obtaining temperature values of all temperature measurement points within n seconds before heating, solving the reciprocal of the temperature on each temperature measurement point to time, determining a cylindrical half shaft section, calculating the power value Qr of each temperature measurement point on the unit volume in the cylindrical half shaft section, and integrating the power values of the temperature measurement points on the unit volumes in a microwave generator effective temperature field to obtain the microwave ablation antenna pointed end power, wherein the microwave generator effective temperature field refers to a cylinder formed in the mode that the cylindrical half shaft section winds an ablation antenna, any Qr passing a half section of a center shaft is the same as the Qr of a corresponding point on the cylindrical half shaft section in the microwave generator effective temperature field, and the microwave ablation antenna pointed end power is full net power eliminating loss power in output power.

Description

technical field [0001] The invention relates to the field of measuring methods for medical supplies, in particular to a method for measuring the power of a microwave ablation antenna tip. Background technique [0002] In today's biomedical treatment, thermal ablation has become an indispensable and effective treatment method in clinical applications, especially for the treatment of liver tumors, with more significant curative effects. [0003] The advantages of minimally invasive, fast, and effective ablation are the main reasons for its wide application in clinical practice. In order to avoid this technique being too dependent on the experience of clinicians, the quantitative reference of scientific standards is an indispensable key step in formulating surgical planning. . At present, we have strengthened the quantitative standard through a large number of in vitro and animal experiments, and have obtained preliminary results, which have played a certain role in clinical p...

AI Technical Summary

Problems solved by technology

However, in the later data processing and analysis process, it was found that under the same environment, the same equipment and the same conditions, the same output power will produce different ablation areas, and it can be deduced that under the same output power conditions, the power loss is different. The actual power applied to the tissue is different, resulting in different ablation areas

If this data is always used as the quantitative standard in clinical application, it will cause incomplete ablation or damage to normal tissues, resulting in medical mistakes or accidents

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