Effect of probe arrangement on reproducibility of images by near-infrared topography evaluated by a virtual head phantom

Hiroshi Kawaguchi, Tatsuya Koyama, Eiji Okada

研究成果: Article査読

25 被引用数 (Scopus)

抄録

The effect of the probe arrangement on the reproducibility of topographic images of the concentration changes in oxygenated hemoglobin and deoxygenated hemoglobin is evaluated by a virtual head phantom. A virtual head phantom consists of five types of tissue the 3D structure of which is based on a magnetic resonance imaging scan of an adult head. Localized and broadened brain activation is assumed in a virtual head phantom. The topographic images are obtained from the reflectance detected by the standard probe arrangement and the double-density probe arrangement. The uneven thickness of the superficial layer, which cannot be evaluated by the previous slab model, affects the distribution of measured activation in the topographic image, and this reduces the position reproducibility of near-infrared (NIR) topography with the standard probe arrangement. The overlapping measurements by the double-density probe arrangement can improve the reproducibility of the image obtained by NIR topography.

本文言語English
ページ(範囲)1658-1668
ページ数11
ジャーナルApplied Optics
46
10
DOI
出版ステータスPublished - 2007 4月 1

ASJC Scopus subject areas

  • 原子分子物理学および光学
  • 工学(その他)
  • 電子工学および電気工学

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