A multifrequency phase-controlled driving system for ultrasound therapy

Ultrasound therapy is a new type of therapy technology, there are hyperthermia and high intensity focused ultrasound surgery (HIFUS). Compared with a single frequency system, mutiple frequency system has an additional function to combine power patterns of different frequencies. This function increas...

Full description

Saved in:
Bibliographic Details
Published inZhongguo yi liao qi xie za zhi Vol. 26; no. 4; p. 256
Main Authors Dai, Qi-jun, Zhou, Qin-wu, Xu, Xiao-zhou, Ou Yang, Ke-yong, Bian, Zheng-zhong
Format Journal Article
LanguageChinese
Published China 01.07.2002
Subjects
Equipment Design
Humans
Neoplasms - therapy
Transducers
Ultrasonic Therapy - instrumentation
Online AccessGet more information

Cover

More Information
Summary:Ultrasound therapy is a new type of therapy technology, there are hyperthermia and high intensity focused ultrasound surgery (HIFUS). Compared with a single frequency system, mutiple frequency system has an additional function to combine power patterns of different frequencies. This function increases the availability of power patterns to treat tumors of various shapes and depths. Therefore, we have in this article proposed a system with the ability to drive ultrasonic phased arrays of multiple resonant frequencies for ultrasound hyperthermia and HIFUS. The results show that this system is able to (1) drive multi-element applicators or phased arrays of a single resonant frequency through the multichannel power amplifiers, (2) concurrently drive transducer with different resonant frequencies, (3) adjust the relative phase and output power of each channel for the scanning ultrasonic focus, and (4) operate each channel with good output stability.
ISSN:1671-7104