Volumetric diffuse optical tomography of brain activity

Joseph P. Culver; Andrew M. Siegel; Jonathan J. Stott; David A. Boas

doi:10.1364/OL.28.002061

Volumetric diffuse optical tomography of brain activity

Joseph P. Culver, Andrew M. Siegel, Jonathan J. Stott, and David A. Boas

Optics Letters
Vol. 28,
Issue 21,
pp. 2061-2063
(2003)
•https://doi.org/10.1364/OL.28.002061

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Joseph P. Culver, Andrew M. Siegel, Jonathan J. Stott, and David A. Boas, "Volumetric diffuse optical tomography of brain activity," Opt. Lett. 28, 2061-2063 (2003)

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Optics & Photonics Topics
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Previously assigned OCIS codes
- Medical optics and biotechnology (170.0170)
- Light propagation in tissues (170.3660)
- Medical and biological imaging (170.3880)
- Photon density waves (170.5270)
- Spectroscopy, tissue diagnostics (170.6510)

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Abstract

We present three-dimensional diffuse optical tomography of the hemodynamic response to somatosensory stimulation in a rat. These images show the feasibility of volumetrically imaging the functional response to brain activity with diffuse light. A combination of positional optode calibration and contrast-to-noise ratio weighting was found to improve imaging performance.

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Method	$Δ z$ (mm)	$Δ \|r\|$ (mm)	Volume ( ${mm}^{3}$ )
PC and CNR	$0.1 \pm 0.1$	$0.5 \pm 0.2$	$11.8 \pm 4$
PC and no CNR	$- 0.6 \pm 0.1$	$0.7 \pm 0.1$	$27.8 \pm 14$
No PC and CNR	$0.3 \pm 0.2$	$0.5 \pm 0.2$	$12.4 \pm 8$
No PC and no CNR	$- 1.3 \pm 0.5$	$2.4 \pm 2.0$	$32 \pm 23$

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