Presentation 2009-08-28
A Study of Noninvasive Optical Parameters Determination in Scattering Medium Based on Diffused Optical Tomography Utilizing Only Backward Reemissions
Seiki KAWASAKI, Yusuke MAEDA, Tadatoshi TANIFUJI,
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Abstract(in English) Image quality of time -resolved diffused optical tomography reconstructed by utilizing only backward reemissions has been studied. Estimated optical absorption coefficients (μ_a) of two-dimensional scattering medium of 80×40mm^2 has been studied. Experimental reemissions are simulated by superimposing Poisson random variables on theoretical reemissions calculated by finite difference time domain (FDTD) analysis. μ_a are estimated by minimizing least mean squares of theoretical and experimental reemissions amplitude utilizing Truncated Newton (TN) method. Relative difference from baseline in a single square absorbing target was 20.5% and the contrast for the two square absorbing targets with 12mm in a center-to-center separation was 86.5% when the targets are located at 8mm in depth. The image quality is degraded as a location of the targets becomes deeper.
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Keyword(in English) Time-resolved diffused optical tomography / Truncated Newton method / FDTD analysis / Optical parameters
Paper # OFT2009-32
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Committee OFT
Conference Date 2009/8/20(1days)
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Registration To Optical Fiber Technology (OFT)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Study of Noninvasive Optical Parameters Determination in Scattering Medium Based on Diffused Optical Tomography Utilizing Only Backward Reemissions
Sub Title (in English)
Keyword(1) Time-resolved diffused optical tomography
Keyword(2) Truncated Newton method
Keyword(3) FDTD analysis
Keyword(4) Optical parameters
1st Author's Name Seiki KAWASAKI
1st Author's Affiliation Department of Electrical and Electronics Engineering, Kitami Institute of Technology()
2nd Author's Name Yusuke MAEDA
2nd Author's Affiliation Department of Electrical and Electronics Engineering, Kitami Institute of Technology
3rd Author's Name Tadatoshi TANIFUJI
3rd Author's Affiliation Department of Electrical and Electronics Engineering, Kitami Institute of Technology
Date 2009-08-28
Paper # OFT2009-32
Volume (vol) vol.109
Number (no) 179
Page pp.pp.-
#Pages 4
Date of Issue