Title :
Ultrasonic interstitial heating in phantoms
Author :
Jarosz, Boguslaw J.
Author_Institution :
Dept. of Phys., Carleton Univ., Ottawa, Ont., Canada
Abstract :
Interstitial heating was achieved with an ultrasonic applicator made of an acoustic waveguide attached to a planar piezoelectric transducer, operated at about 1 MHz. A hyperthermia of 6.5-13.5°C was observed in two phantoms. After a linear initial rise, the temperature reached a plateau. The final temperature depends on a power applied, initial rate of heating, and, to a smaller degree, on the type of phantom. An interpretation, of the results based on the Hankel integral solution to the heat equation is presented
Keywords :
biomedical ultrasonics; biothermics; radiation therapy; 1 MHz; Hankel integral solution; acoustic waveguide; heat equation; heating rate; phantoms; planar piezoelectric transducer; Acoustic waveguides; Acoustic waves; Applicators; Heating; Hyperthermia; Imaging phantoms; Integral equations; Piezoelectric transducers; Planar waveguides; Temperature;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.96284
