Title :
Analysis of a multielement ultrasound hyperthermia applicator
Author :
Benkeser, Paul J. ; Frizzell, Leon A. ; Goss, Stephen A. ; Cain, Charles A.
Author_Institution :
Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
fDate :
5/1/1989 12:00:00 AM
Abstract :
An unfocused multielement ultrasound applicator was developed for hyperthermia treatment of superficial tumors. The applicator contains sixteen 3.8-cm/sup 2/ individually controllable elements on a 15.2-cm/sup 2/ piezoelectric ceramic plate. The acoustical power output of each element can be independently applied to facilitate uniform heating throughout the treatment area while minimizing undesired heating in normal tissues. The performance of the applicator was examined by measuring acoustical power output and beam profiles. The results of this analysis indicated that the applicator is capable of producing required therapeutic output levels with excellent localization and control of the power deposition.<>
Keywords :
acoustic arrays; biomedical equipment; biomedical ultrasonics; biothermics; radiation therapy; acoustic arrays; acoustical power output; beam profiles; biomedical ultrasonics; multielement ultrasound hyperthermia applicator; superficial tumors; Acoustic beams; Applicators; Frequency; Heat treatment; Hyperthermia; Neoplasms; Temperature control; Temperature distribution; Ultrasonic imaging; Ultrasonic variables measurement;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
