Improvement of near-infrared topography by optode arrangement and reconstruction algorithm using spatial sensitivity profile

Hiroshi Kawaguchi; Toshiyuki Hayashi; Toshinori Kato; Eiji Okada

doi:10.1109/APBME.2003.1302710

Improvement of near-infrared topography by optode arrangement and reconstruction algorithm using spatial sensitivity profile

Hiroshi Kawaguchi, Toshiyuki Hayashi, Toshinori Kato, Eiji Okada

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Near-infrared topographic imaging can noninvasively measure the distribution of brain activation in the cortex. The near-infrared light is strongly scattered in the superficial tissues and the volume of tissue sampled by a source-detector pair of the imaging system is broadly distributed in the cortical tissue. This poses results in poor spatial resolution and contrast in the topographic images. In this study, we propose reconstruction algorithm for near- infrared topographic imaging using the spatial sensitivity profile. The profile of absorption change in the head model is calculated to evaluate the proposed algorithm. The width of the profiles calculated by the proposed algorithm is smaller than that by the conventional mapping algorithm. The profiles calculated by the proposed algorithm agree with the correct distribution when the interval of the source-detector pairs is less than 8 mm.

Original language	English
Title of host publication	APBME 2003 - IEEE EMBS Asian-Pacific Conference on Biomedical Engineering 2003
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	314-315
Number of pages	2
ISBN (Print)	0780379438, 9780780379435
DOIs	https://doi.org/10.1109/APBME.2003.1302710
Publication status	Published - 2003
Event	IEEE EMBS Asian-Pacific Conference on Biomedical Engineering 2003, APBME 2003 - Kyoto-Osaka-Nara, Japan Duration: 2003 Oct 20 → 2003 Oct 22

Other

Other	IEEE EMBS Asian-Pacific Conference on Biomedical Engineering 2003, APBME 2003
Country/Territory	Japan
City	Kyoto-Osaka-Nara
Period	03/10/20 → 03/10/22

Keywords

Image reconstruction technique
Medical and biological imaging
Near infrared spectroscopy

ASJC Scopus subject areas

Biomedical Engineering

Access to Document

10.1109/APBME.2003.1302710

Cite this

Kawaguchi, H., Hayashi, T., Kato, T., & Okada, E. (2003). Improvement of near-infrared topography by optode arrangement and reconstruction algorithm using spatial sensitivity profile. In APBME 2003 - IEEE EMBS Asian-Pacific Conference on Biomedical Engineering 2003 (pp. 314-315). [1302710] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APBME.2003.1302710

Improvement of near-infrared topography by optode arrangement and reconstruction algorithm using spatial sensitivity profile. / Kawaguchi, Hiroshi; Hayashi, Toshiyuki; Kato, Toshinori et al.

APBME 2003 - IEEE EMBS Asian-Pacific Conference on Biomedical Engineering 2003. Institute of Electrical and Electronics Engineers Inc., 2003. p. 314-315 1302710.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kawaguchi, H, Hayashi, T, Kato, T & Okada, E 2003, Improvement of near-infrared topography by optode arrangement and reconstruction algorithm using spatial sensitivity profile. in APBME 2003 - IEEE EMBS Asian-Pacific Conference on Biomedical Engineering 2003., 1302710, Institute of Electrical and Electronics Engineers Inc., pp. 314-315, IEEE EMBS Asian-Pacific Conference on Biomedical Engineering 2003, APBME 2003, Kyoto-Osaka-Nara, Japan, 03/10/20. https://doi.org/10.1109/APBME.2003.1302710

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abstract = "Near-infrared topographic imaging can noninvasively measure the distribution of brain activation in the cortex. The near-infrared light is strongly scattered in the superficial tissues and the volume of tissue sampled by a source-detector pair of the imaging system is broadly distributed in the cortical tissue. This poses results in poor spatial resolution and contrast in the topographic images. In this study, we propose reconstruction algorithm for near- infrared topographic imaging using the spatial sensitivity profile. The profile of absorption change in the head model is calculated to evaluate the proposed algorithm. The width of the profiles calculated by the proposed algorithm is smaller than that by the conventional mapping algorithm. The profiles calculated by the proposed algorithm agree with the correct distribution when the interval of the source-detector pairs is less than 8 mm.",

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AB - Near-infrared topographic imaging can noninvasively measure the distribution of brain activation in the cortex. The near-infrared light is strongly scattered in the superficial tissues and the volume of tissue sampled by a source-detector pair of the imaging system is broadly distributed in the cortical tissue. This poses results in poor spatial resolution and contrast in the topographic images. In this study, we propose reconstruction algorithm for near- infrared topographic imaging using the spatial sensitivity profile. The profile of absorption change in the head model is calculated to evaluate the proposed algorithm. The width of the profiles calculated by the proposed algorithm is smaller than that by the conventional mapping algorithm. The profiles calculated by the proposed algorithm agree with the correct distribution when the interval of the source-detector pairs is less than 8 mm.

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Improvement of near-infrared topography by optode arrangement and reconstruction algorithm using spatial sensitivity profile

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Keywords

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