Title :
Ultrasound thermometry in hyperthermia
Author :
Ueno, S. ; Hashimoto, M. ; Fukukita, H. ; Yano, T.
Author_Institution :
Matsushita Res. Inst. Tokyo Inc., Kawasaki, Japan
Abstract :
A hyperthermia thermometry system using an ultrasound nonlinear effect caused by superposed pulses was developed. A feasibility study was made to obtain temperature mapping of tissue phantoms and of anesthetized pigs heated by an ultrasound applicator. The thermometry system consists of a mechanical sector scanner and a mainframe with a color monitor. The distribution of the temperature rise is calculated within one minute, and displayed on the monitor together with an ultrasound B-mode image. Experimental results show that a reasonable temperature rise mapping was obtained in both objects, agreeing to within 2°C with the data obtained by thermocouples located in the phantom
Keywords :
biomedical ultrasonics; nonlinear acoustics; radiation therapy; temperature measurement; 1 min; anesthetized pigs; color monitor; hyperthermia thermometry system; mainframe; mechanical sector scanner; phantom; superposed pulses; temperature mapping; temperature rise distribution; therapeutic ultrasound; thermocouples; tissue phantoms; ultrasound B-mode image; ultrasound applicator; ultrasound nonlinear effect; Acoustic measurements; Acoustic propagation; Acoustic pulses; Attenuation; Hyperthermia; Probes; Pulse measurements; Temperature; Ultrasonic imaging; Ultrasonic variables measurement;
Conference_Titel :
Ultrasonics Symposium, 1990. Proceedings., IEEE 1990
Conference_Location :
Honolulu, HI
DOI :
10.1109/ULTSYM.1990.171648
