Title :
Phased array development for noninvasive focused ultrasound therapy of brain and liver
Author :
Hynynen, K. ; Sun, J. ; Clement, G. ; Thierman, J. ; Daum, D. ; Vykhodseva, N. ; McDannold, N.
Author_Institution :
Dept. of Radiol., Brigham & Women´´s Hosp., Boston, MA, USA
Abstract :
In order to perform noninvasive ultrasound therapy of brain and liver, several phased arrays have been developed in our laboratory. A 256 element array and a 449 element array have been constructed, both operate at 1.1 MHz. We have obtained lesions in pig livers through the abdominal wall using the 256 element array. Additionally, we have designed a hemisphere array to operate at 625 kHz for transskull brain therapies, and numerical results are presented when the hemisphere transducer is divided into 228 elements
Keywords :
biomedical ultrasonics; brain; liver; radiation therapy; ultrasonic transducer arrays; 1.1 MHz; 625 kHz; abdominal wall; brain; element array; hemisphere array; hemisphere transducer; lesions; noninvasive focused ultrasound therapy; phased array development; pig livers; transskull brain therapies; Abdomen; Acoustic propagation; Apertures; Liver; Medical treatment; Phased arrays; Skull; Ultrasonic imaging; Ultrasonic transducer arrays; Ultrasonic transducers;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.804439
