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Validation of Practical Diffusion Approximation for Virtual Near Infrared Spectroscopy Using a Digital Head Phantom
https://repo.qst.go.jp/records/45544
https://repo.qst.go.jp/records/45544203b9354-bf6e-4281-b4d2-d5f0e1a97582
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2009-06-18 | |||||
| タイトル | ||||||
| タイトル | Validation of Practical Diffusion Approximation for Virtual Near Infrared Spectroscopy Using a Digital Head Phantom | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Oki, Yosuke
× Oki, Yosuke× Kawaguchi, Hiroshi× Okada, Eiji× 川口 拓之 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Light propagation in the digital head phantom for virtual near infrared spectroscopy and imaging is calculated by diffusion theory. In theory, diffusion approximation is not valid in a low-scattering cerebrospinal fluid (CSF) layer around the brain. The optical path length and spatial sensitivity profile predicted by the finite element method based upon the diffusion theory are compared with those predicted by the Monte Carlo method to validate a practical implementation of diffusion approximation to light propagation in an adult head. The transport scattering coefficient of the CSF layer is varied from 0.01 to 1.0 mm-1 to evaluate the influence of that layer on the error caused by diffusion approximation. The error is practically ignored and the geometry of the brain surface such as the sulcus structure in the digital head phantom scarcely affects the error when the transport scattering coefficient of the CSF layer is greater than 0.3 mm-1. | |||||
| 書誌情報 |
Optical Review 巻 16, 号 2, p. 153-159, 発行日 2009 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1340-6000 | |||||
