Title :
Development of new intracavitary ultrasound applicator
Author :
Prieur, G. ; Nadi, M. ; Marchal, C. ; Chitnallah, A. ; Bey, P.
Author_Institution :
Nancy Univ. of Sci., France
Abstract :
The authors suggest the use of cylindrical piezoelectric transducers for intracavity hyperthermia treatment of vaginal or prostatic tumors, to take advantage of the deep penetration of ultrasound below 5 MHz. Different sizes and shapes of applicators operating around 1 MHz have been developed. The longest is 12 cm in length and 1.5 cm in diameter and uses two lead titanate zirconate transducers of 4-cm length each. Studies of power distributions in tissue-equivalent phantoms are presented, and the results are assessed.<>
Keywords :
biomedical equipment; biomedical ultrasonics; biothermics; piezoelectric transducers; radiation therapy; ultrasonic transducers; 1 MHz; 1.5 cm; 12 cm; 4 cm; 5 MHz; PZT transducers; PbZrO3TiO3; cylindrical piezoelectric transducers; deep penetration; intracavitary ultrasound applicator; intracavity hyperthermia treatment; power distributions; prostatic tumors; tissue-equivalent phantoms; vaginal tumours;
Conference_Titel :
Engineering in Medicine and Biology Society, 1988. Proceedings of the Annual International Conference of the IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-0785-2
DOI :
10.1109/IEMBS.1988.95262
