TY - JOUR
T1 - ANNULAR AND SECTOR PHASED ARRAY APPLICATORS FOR ULTRASOUND HYPERTHERMIA.
AU - Cain, Charles A.
AU - Umemura, Shin Ichiro
PY - 1985/1/1
Y1 - 1985/1/1
N2 - Concentric-ring phased arrays subdivided into sectors (radial slices) can, with appropriate phasing, produce variable diameter annular (or ring) focal regions. Such focal rings can be effective in heating tumors if they are directed around the tumor periphery. Phasing methods which produce focal ring diameters over a wide range are developed. Scanning the focal ring diameter and depth provides considerable heating flexibility. Appropriate phasing of the rings and sectors can produce patterns which are circularly asymmetric. By controlling these asymmetries, nonspherical tumors can be heated more optimally.
AB - Concentric-ring phased arrays subdivided into sectors (radial slices) can, with appropriate phasing, produce variable diameter annular (or ring) focal regions. Such focal rings can be effective in heating tumors if they are directed around the tumor periphery. Phasing methods which produce focal ring diameters over a wide range are developed. Scanning the focal ring diameter and depth provides considerable heating flexibility. Appropriate phasing of the rings and sectors can produce patterns which are circularly asymmetric. By controlling these asymmetries, nonspherical tumors can be heated more optimally.
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U2 - 10.1109/ultsym.1985.198651
DO - 10.1109/ultsym.1985.198651
M3 - Conference article
AN - SCOPUS:0022332117
SN - 0090-5607
SP - 936
EP - 941
JO - Ultrasonics Symposium Proceedings
JF - Ultrasonics Symposium Proceedings
ER -