Title :
Continuous two-way focusing in ultrasonic annular array system without significant reduction in frame rate
Author :
Oh, J.T. ; Park, Jong C. ; Park, S.B.
Author_Institution :
Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea
Abstract :
It is shown by simulation and experiment that a very good lateral resolution in the ultrasonic annular array system can be obtained, without greatly sacrificing the frame rate, by using only a few annuli (one after another), instead of every annulus, for pulse transmission and by receiving the echo at all annuli to apply two-way continuous focusing.
Keywords :
acoustic imaging; biomedical ultrasonics; focusing; medical image processing; frame rate; lateral resolution; pulse transmission; two-way continuous focusing; ultrasonic annular array system;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19921398
