Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)
- Volume 2 Issue 2
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- Pages.141-144
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- 1981
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- 1229-0807(pISSN)
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- 2288-9396(eISSN)
Effects of Refraction of Ultrasonic Beam on B-mode Tomograms
B-mode 단층상에서의 초음파 빔의 굴절 영향
Abstract
This paper descirbes about effects of refraction of ultrasonic beam on B-mode tomogram. Both compution based on Snell's law and the experiments performed using B-mode scanner and schlieren optical method are discussed on a circular phantom immersed in water. In these results, if the discrepancy of sound velocity is more than 0. 6%, the distortion of the B-mode image becomes conspicuous and a target beyound the phantom may disappear or displayed as two targets depending on the velocity of the phantom.
Keywords