MODIFICATION OF INTENSITY DISTRIBUTIONS FROM LARGE-APERTURE ULTRASOUND SOURCES

被引：18

作者：

CLARKE, RL ^{[1
]}

机构：

[1] ROYAL MARSDEN HOSP, INST CANC RES, SUTTON, SURREY, ENGLAND

来源：

ULTRASOUND IN MEDICINE AND BIOLOGY | 1995年 / 21卷 / 03期

关键词：

ULTRASOUND; FOCUSED FIELDS; APODIZATION; TISSUE HEATING; ABLATION;

D O I：

10.1016/0301-5629(94)00128-Z

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The Fresnel-Kirchhoff diffraction theory has been used to model the acoustic fields produced by a variety of apodizations of large aperture, axially symmetric ultrasound sources. The forms of resulting intensity maxima and their resulting suitability for surgical Lesioning of tissues are compared, through a "lesioning capability" and a "focal efficiency." Although only modest changes in intensity distribution are possible, some may have applications in making arrays of lesions for control of focal cancer and other pathologies.

引用

页码：353 / 363

页数：11

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