Image Quality Improvement of Ultrasonic Computed Tomography on the Basis of Maximum Likelihood Expectation Maximization Algorithm Considering Anisotropic Acoustic Property and Time-of-Flight Interpolation

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概要

• 論文の詳細を見る

• The anisotropic acoustic property is considered for the purpose of improving the image quality of the ultrasonic computed tomography (CT) scans of a wooden pillar. We propose a velocity anisotropy correction method of time-of-flight (TOF) data for image reconstruction on the basis of the maximum likelihood-expectation maximization (ML-EM) method. We also examine the effect of the interpolation of the TOF data as the density of the TOF data has a considerable effect on image quality in the ML-EM method. The feasibility of velocity anisotropy correction and TOF data interpolation are examined in detail using numerical and wood phantoms.

• 2010-07-25

著者

• TAMURA Yasutaka

  Department of Electrical and Information Engineering, Faculty of Engineering, Yamagata University

• Saitoh Tadashi

  Department Of Electronic Engineering Faculty Of Technology Tokyo University Of Agriculture And Techn

• Saitoh Tadashi

  Department of Informatics, Yamagata University, Yonezawa, Yamagata 992-8510, Japan

• Yanagida Hirotaka

  Department of Informatics, Yamagata University, Yonezawa, Yamagata 992-8510, Japan

• Takahashi Tatsuhisa

  Mathematical Information Science, Asahikawa Medical College, Asahikawa, Hokkaido 078-8510, Japan

• Fan Honghui

  Department of Informatics, Yamagata University, Yonezawa, Yamagata 992-8510, Japan

• Guo Shuqiang

  Department of Informatics, Yamagata University, Yonezawa, Yamagata 992-8510, Japan

• Tamura Yasutaka

  Department of Informatics, Yamagata University, Yonezawa, Yamagata 992-8510, Japan

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• Image Quality Improvement of Ultrasonic Computed Tomography on the Basis of Maximum Likelihood Expectation Maximization Algorithm Considering Anisotropic Acoustic Property and Time-of-Flight Interpolation
• Photoluminescence from Excited Energy Bands in Au_ Nanoclusters
• Characteristics of an Acoustooptic Deflection Device Having a Bent Ultrasonic Wavefront
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