By Topic

Mixed frequency ultrasound phased array

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

The purchase and pricing options are temporarily unavailable. Please try again later.
4 Author(s)
Xiang, Yong ; Nondestructive Testing and Evaluation Laboratory, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China ; Huo, Jian ; Shi, Keren ; Chen, Yifang

A mixed frequency ultrasonic phased array (MPA) was developed to improve the focus, in which the element excitation frequencies are not all the same as in a normal constant frequency phased array. A theoretical model of the mixed frequency phased array based on the interference principle was used to simulate the array's sound distribution. The pressure intensity in the array focal area was enhanced and the scanning area having effective contrast resolution was enlarged. The system is especially useful for high intensity focused ultrasound (HIFU) with more powerful energy and ultrasound imaging diagnostics with improved signal to noise ratios, improved beam forming and more uniform imaging quality.

Published in:

Tsinghua Science and Technology  (Volume:9 ,  Issue: 5 )