Analytical method for evaluating the quality of acoustic fields radiated by a multielement therapeutic array with electronic focus steering

Ilyin, S.A.; Yuldashev, P.V.; Khokhlova, V.A.; Gavrilov, L.R.; Rosnitskiy, P.B.; Sapozhnikov, O.A.

Авторы: Ilyin S.A., Yuldashev P.V., Khokhlova V.A., Gavrilov L.R., Rosnitskiy P.B., Sapozhnikov O.A.
Журнал: Acoustical Physics
Том: 61
Номер: 1
Год издания: 2015
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 52
Последняя страница: 59
DOI: 10.1134/S1063771015010042
Аннотация: The paper presents an analytical method for calculating and analyzing the quality of 3-D acoustic fields of multi-element phased arrays used in noninvasive ultrasound surgical devices. An analytical solution for the far field of each of its elements is used when calculating the array field. This method significantly accelerates calculations while preserving the high accuracy of results as compared to conventional direct numerical integration. Radiation from typical phased arrays is calculated using this approach, and the quality of their dynamic focusing is analyzed. Undesired diffraction effects that occur are considered: an amplitude decrease in the main maximum and the appearance of array’s grating lobes. The quality of dynamic focusing of the acoustic fields of two practically interesting arrays with a quasi-random element distribution (256 and 1024 elements, respectively), as well as of the regular array consisting of 256 elements is compared. The effect of the number of the array elements and their spatial distributions on the dimensions of areas in which dynamic focusing is possible without occurrence of strong grating lobes and significant decrease in pressure amplitude at the main focus is investigated.
Добавил в систему: Хохлова Вера Александровна

	ИСТИНА	Войти в систему Регистрация
	Интеллектуальная Система Тематического Исследования НАукометрических данных
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

Интеллектуальная Система Тематического Исследования НАукометрических данных

Analytical method for evaluating the quality of acoustic fields radiated by a multielement therapeutic array with electronic focus steeringстатья

Прикрепленные файлы