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The method makes it possible to monitor the heart temperature at hypothermia and hyperthermia; additionally, it makes it possible to evaluate the efficiency of the coronary artery bypass graft surgery performed during open heart operation.

This paper investigates the opportunities of applying the methods of noninvasive contactless diagnostics and numerical modeling for assessing the temperature gradient on the surface of the myocardium. These changes are observed on the surface of myocardium during hypo and hyperthermal processes, precisely during cardiopulmonary bypass (CPB). The 3D model of heat exchange in the myocardium is developed in the system MSC Sinda. Results of the performed measurements in the heart show that a noninvasive monitoring of the heart temperature using a thermographic camera in (CPB) conditions enables reliable measuring of the temperature of the myocardium during hypo and hyperthermal processes. The gradient of temperature on the surface of the heart may be usable as a diagnostic criterion for establishing ischemic zones on the surface of the myocardium.