Evaluation of spatial resolution of near infrared topography using spatial sensitivity profile

Hiroshi Kawaguchi, Toshiyuki Hayashi, Toshinori Kato, Eiji Okada

研究成果: Conference contribution

抄録

A near infrared topographic system is an effective instrument for obtaining an image of brain activation. In the conventional mapping method, the signals detected with the source-detector pairs are simply mapped and interpolated to obtain the topographic image. It is likely that an image reconstruction algorithm using a spatial sensitivity profile will improve the spatial resolution of the topographic image. In this study, a onedimensional distribution of the absorption change in the head model is calculated from the signals detected with various intervals of source-detector pairs by the conventional mapping method and an image reconstruction algorithm using the spatial sensitivity profile to evaluate the limit of spatial resolution of topographic imaging. Small intervals of the source-detector pairs improve the position of the absorption change in the topographic image calculated by both the conventional mapping method and the reconstruction algorithm. The size of the absorption change calculated from the intensity detected with a small interval of the source-detector pairs is sufficiently improved by the image reconstruction algorithm using the spatial sensitivity profile.

本文言語English
ホスト出版物のタイトルEuropean Conference on Biomedical Optics, ECBO 2003
出版社Optica Publishing Group (formerly OSA)
ページ249-257
ページ数9
ISBN(電子版)9781557528209
出版ステータスPublished - 2003
イベントEuropean Conference on Biomedical Optics, ECBO 2003 - Munich, Germany
継続期間: 2003 6月 22 → …

出版物シリーズ

名前Optics InfoBase Conference Papers

Conference

ConferenceEuropean Conference on Biomedical Optics, ECBO 2003
国/地域Germany
CityMunich
Period03/6/22 → …

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 材料力学

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