THERMOPHYSICAL EFFECTS IN PHOTODYNAMIC TUMOR THERAPY V. N. Bidnenko and V. L. Sigal UDC 616.33.002.44 A mathematical model of temperature modes in photodynamic therapy of brain tumors is suggested. Technological conditions for this therapy under which destruction of malignant cells along with photoprocesses are accompanied by hyperthermal and thermotherapeutic temperatures are determined. The realized possibilities allow one to achieve a higher degree of tumor destruction especially for low-perfusion tumors, with nearby healthy tissue being preserved. JEPTER74920199915 JEPTER7492015