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3 June 2011 YURAGI: analysis for trans-skull brain visualizing by ultrasonic array probe
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Abstract
This paper proposes a YURAGI-Analysis for brain imaging under the skull. In it, we employ 1.0MHz and 0.5MHz ultrasonic waves. We consider the weighted sum of these waves and attempt to extract the skull depth and image the sulcus under it. We add 1.0MHz and 0.5MHz, and we add the waves of 1.0MHz and Gaussian noise as the YURAGI analysis. We visualize the sulcus and skull. First, we calculate the thickness of the skull from the each of two synthesized waves. The thickness is determined from the surface and bottom points determined from the wave based on fuzzy inference. The sulcus surface was extracted from B-mode images for the each of two synthesized waves. As the result using a cow scapula as the skull and steel ditch as the human sulcus, we successfully calculated skull thickness. We extracted the sulcus width within the error of 5.86 mm and depth within the error of 1.94 mm. As for imaging the sulcus under the skull, the highest effectiveness of the synthesized wave is 96.30% when the weight of 0.5MHz waves is 0.60, and the one of YURAGI-Analysis wave is 97.15% when the weight is 0.003. Thus, YURAGI-Analysis is useful to this study.
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N. Yagi, Y. Oshiro, O. Ishikawa, Y. Hata, Y. T. Kitamura, and T. Yanagida "YURAGI: analysis for trans-skull brain visualizing by ultrasonic array probe", Proc. SPIE 8058, Independent Component Analyses, Wavelets, Neural Networks, Biosystems, and Nanoengineering IX, 805813 (3 June 2011); https://doi.org/10.1117/12.883354
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