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KMID : 0372919820030010035
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Journal of Biomedical Engineering Research
1982 Volume.3 No. 1 p.35 ~ p.42
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A Recursive Restoration Scheme of B-Scan Ultrasonographic Images in Noisy Case
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Kim SI
Min BG/Ko MS
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Abstract
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The objective of this phantom study is to develop a digital method for improving the lateral resolution of B-scan ultrasonographic images irs medical application of ultrasound. By utilizing a discrete state-space modeling approach and Kalman-Buch method for analysis of the transducer’’’’s beam profile and the measurement and sampling noise, a stable recursive restoration of the object image was obtained for improved lateral resolution. The point spread function (PSF) was measured for the reflective signals after scanning the small pins located along the depth of interest. One major advantage of the present recursive scheme over the transform method is in its applicability for the space-variant imaging, such as in the case of the rotational movement of transducer.
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