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Influences of Target Size and Contrast on Near Infrared Diffuse Optical Tomography – a Comparison Between Featured-data and Full Time-resolved Schemes

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Abstract

Our recent diffuse optical tomography experiments on human lower legs and forearms are presented using the time-resolved measuring system and image reconstruction algorithm based on the modified generalized pulse spectrum technique. It was shown that the spatial resolution and quantitativeness of the resultant images, was rather poor, and the interior blood vessels invisible in the absorption images. To clarify this issue, the influences of target contrast and size on the image reconstruction were investigated with simulated data. We have found that the quantitativeness of the reconstructed optical properties was prone to be spoiled by the small size ratio and high contrast of the interior targets to the background, and the incompleteness of information embedded in the featured data-types, evidently answers for the degradation of the image quality. It was shown in a further simulative investigation that the image quality could be substantially improved by making full use of the time-resolved data.

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Authors and Affiliations

  1. College of Precision Instrument and Optoelectronics Engineering, Tianjin University, 92 Weijinlu, Nankai, Tianjin, 300072, P.R. China

    Feng Gao & Huijuan Zhao

  2. Institute for Human Science and Biological Engineering, National Institute of Advanced Industrial Science and Technology, 1-2 Namiki, Tsukuba, Ibaraki, 305-8564, Japan

    Feng Gao, Huijuan Zhao, Yukari Tanikawa, Kazhuhiro Homma & Yukio Yamada

  3. Department of Mechanical Engineering and Intelligent Systems, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo, 182-8585, Japan

    Yukio Yamada

Authors
  1. Feng Gao
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  2. Huijuan Zhao
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  3. Yukari Tanikawa
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  4. Kazhuhiro Homma
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  5. Yukio Yamada
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Correspondence to Feng Gao.

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Gao, F., Zhao, H., Tanikawa, Y. et al. Influences of Target Size and Contrast on Near Infrared Diffuse Optical Tomography – a Comparison Between Featured-data and Full Time-resolved Schemes. Opt Quant Electron 37, 1287–1304 (2005). https://doi.org/10.1007/s11082-005-4200-y

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  • DOI: https://doi.org/10.1007/s11082-005-4200-y

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