Temperature monitoring for high frequency welding of soft biological tissues: A prospective study.

Background: Monitoring of temperature changes and accurately determining the moment of electrode removal during open heart operations is not well recognized.

Objective: We investigated the temperature fields distribution in the biological tissues affected by electrosurgery upon use of an infrared thermograph.

Methods: The dynamics of temperature distribution in the tissue was registered by the thermal imaging camera FLIR i7.

The IR-thermal imaging method for evaluation of the status of myocardial coronary vessels under the condition of artificial blood circulation.

Background: In this paper a method is proposed to evaluate the heart's coronary vessels' status based on the elimination of large coronary branches from IR-thermal image. This method makes it possible to determine nutrient cardiac blood circulation by calculation of the rate of heat spreading in small coronary vessels in the myocardium at hypothermia and hyperthermia under the conditions of artificial blood circulation.

Objective: The objective of the paper includes a theoretical substantiation of the proposed method for evaluation of the heart's coronary vessels' status and an experimental investigation of the efficiency of the method.