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 | |
| 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 | Japan |
| City | Kyoto-Osaka-Nara |
| Period | 03/10/20 → 03/10/22 |
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Keywords
- Image reconstruction technique
- Medical and biological imaging
- Near infrared spectroscopy
ASJC Scopus subject areas
- Biomedical Engineering
Cite this
Improvement of near-infrared topography by optode arrangement and reconstruction algorithm using spatial sensitivity profile. / Kawaguchi, Hiroshi; Hayashi, Toshiyuki; Kato, Toshinori; Okada, Eiji.
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
}
TY - GEN
T1 - Improvement of near-infrared topography by optode arrangement and reconstruction algorithm using spatial sensitivity profile
AU - Kawaguchi, Hiroshi
AU - Hayashi, Toshiyuki
AU - Kato, Toshinori
AU - Okada, Eiji
PY - 2003
Y1 - 2003
N2 - 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.
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.
KW - Image reconstruction technique
KW - Medical and biological imaging
KW - Near infrared spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=84945975523&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84945975523&partnerID=8YFLogxK
U2 - 10.1109/APBME.2003.1302710
DO - 10.1109/APBME.2003.1302710
M3 - Conference contribution
AN - SCOPUS:84945975523
SN - 0780379438
SN - 9780780379435
SP - 314
EP - 315
BT - APBME 2003 - IEEE EMBS Asian-Pacific Conference on Biomedical Engineering 2003
PB - Institute of Electrical and Electronics Engineers Inc.
ER -