학술논문
Evaluation of an aperiodic phased array for prostate thermal therapies
Document Type
Conference
Author
Source
1995 IEEE Ultrasonics Symposium. Proceedings. An International Symposium Ultrasonics Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE. 2:1601-1604 vol.2 1995
Subject
Language
ISSN
1051-0117
Abstract
A 57 element aperiodic linear phased array was designed and constructed to investigate the feasibility of using transrectal ultrasound for thermal therapeutic treatment of diseases of the prostate. A method of reducing grating lobe levels by using optimized random distributions of unequally sized elements was used, which made it feasible to use larger elements and hence fewer elements and amplifier channels, while still achieving acceptable power field patterns. The heating capabilities of this array were investigated using an ex vivo perfused kidney for hyperthermia and fresh bovine liver for thermal surgery. The experiments demonstrated that the aperiodic array was capable of generating and controlling adequate power for the purposes of hyperthermia and thermal surgery.