[Apparatus and technical devices for ultrasonic hyperthermia].

The developed apparatus included ultrasonic generators operating at a frequency of 0.5-3 MHz, piezoceramic radiators of various design providing the heating of an object with convergent, divergent and plane ultrasonic waves, thermoprobes in the form of single or multiple thermocouples with the bends from 5 points at a 5 mm distance from one another, temperature meters and various auxiliaries. The results of measurements of the acoustical fields of the developed radiators were presented. The advantages and shortcomings of the ultrasonic method of tumor hyperthermia were discussed.