Phantom experiment on relationship between activated position of cerebral cortex and NIR signal

T. Kadoya, E. Okada

研究成果: Conference article査読

7 被引用数 (Scopus)

抄録

Near infrared topographic imaging is effective to obtain the functional image of brain-cortex. The image is reconstructed from the change in light intensity detected with multi-channel source-detector pairs. Since the volume of brain tissue sampled by each source-detector pair is affected the scattering of tissue, it is important to evaluate the effect of scattering on the spatial resolution of the reconstructed image. In this study, the absorption change of various sizes at various positions in the adult head phantom is reconstructed by multi-channel measurements to evaluate the spatial resolution of topographic imaging. Since the heterogeneity of tissue, especially presence of low scattering CSF layer, affects the light propagation in the adult brain, the phantom consists of three layers. The diameter of the absorber is varied from 10 to 20 mm. The position of reconstructed absorber in the topographic image agrees well with that of the absorber in the brain layer of the phantom. The size of reconstructed absorber in the images is considerably broader than that of the absorber.

本文言語English
ページ(範囲)558-565
ページ数8
ジャーナルProceedings of SPIE - The International Society for Optical Engineering
4250
DOI
出版ステータスPublished - 2001
イベントOptical Tomography and Spectroscopy of Tissue IV - San Jose, CA, United States
継続期間: 2001 1月 212001 1月 23

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学

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