Method and device for monitoring temperature distribution of ablation heat field

Abstract

The invention provides a method and a device for monitoring the temperature distribution of the ablation heat field. The method includes control ablation probe located in tissue to be tested to emit laser signal so as to excite photoacoustic signal from ablation probe and tissue to be tested, and controlling ablation probe to emit laser signal from ablation probe to emit photoacoustic signal. Detecting a photoacoustic signal using an ultrasonic device positioned on a surface of a tissue to be monitored; The temperature distribution is calculated according to the photoacoustic signal. The ablation heat field temperature distribution monitoring method and device provided by the invention can realize large-scale non-invasive temperature monitoring, have the characteristics of non-invasive, wide temperature measuring range and high temperature measuring accuracy, and can meet clinical requirements.

Description

technical field [0001] The invention belongs to the field of bio-optics, and in particular relates to a method and a device for monitoring the temperature distribution of an ablation heat field. Background technique [0002] Real-time and accurate monitoring of the temperature distribution of the ablation thermal field is a major clinical requirement in the thermal ablation process. The temperature distribution of the thermal field directly determines the location, size and shape of the ablation lesion, and is considered to be the decisive factor for the prognosis of tumor ablation therapy. In the follow-up study of clinical tumor ablation therapy, failure to meet the ablation boundary, that is, the ablation area is smaller than the tumor area, is an independent risk factor for recurrence after ablation therapy, and it is also the most direct inducing factor. Effectively controlling the size of the ablation area can not only ensure that the tumor is completely cleared, but ...

AI Technical Summary

Problems solved by technology

[0004] The present invention is used to solve the problem of invasive temperature measurement methods such as thermal resistance and thermocouple in the prior art, which are traumatic to a certain extent, and can only be measured at a single point, and the area that can be monitored is limited, and this invasive operation can also cause Pitfalls of tumor implantation risk

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