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An Experimental Study of the Synthetic Sinc Wave in Ultrasonic Imaging  

이광주 (대진대학교 전자공학과)
정목근 (대진대학교 전자공학과)
Publication Information
Journal of Biomedical Engineering Research / v.23, no.3, 2002 , pp. 243-251 More about this Journal
Abstract
Synthetic zinc wave employs Pulsed plane wave as transmit beam with linear time delay curve. The received echoes in different transmit directions at different transmit times are superposed at imaging Points with Proper time delay compensation using synthetic focusing scheme. This scheme. which uses full aperture in transmit, obtains a high SNR image, and also features high lateral resolution by using two way dynamic focusing at all imaging depths. In this Paper, we consider the Problems in realization of synthetic zinc wave. Also. we have applied the scheme to obtain phantom and in-vivo images using a linear array of 5 MHz. In phantom test. experimental images show high resolution over a more extended imaging depth than conventional fixed Point transmit and receive dynamic focusing schemes In-vivo images show that the resolution could not overcome conventional focusing systems because of motion blurring and(or) aberration of tissue. but the frame rate tan be increased by a factor of more than 5 compared to conventional focusing schemes. with competitive resolution at all imaging depths .
Keywords
Medical ultrasound imaging; Sinc wave; Plane wave; Synthetic focusing;
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Times Cited By KSCI : 3  (Citation Analysis)
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