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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 31 — Nov. 1, 2006
  • pp: 8142–8151

Diffuse optical tomography system to image brain activation with improved spatial resolution and validation with functional magnetic resonance imaging

Danny K. Joseph, Theodore J. Huppert, Maria Angela Franceschini, and David A. Boas  »View Author Affiliations


Applied Optics, Vol. 45, Issue 31, pp. 8142-8151 (2006)
http://dx.doi.org/10.1364/AO.45.008142


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Abstract

Although most current diffuse optical brain imaging systems use only nearest- neighbor measurement geometry, the spatial resolution and quantitative accuracy of the imaging can be improved through the collection of overlapping sets of measurements. A continuous-wave diffuse optical imaging system that combines frequency encoding with time-division multiplexing to facilitate overlapping measurements of brain activation is described. Phantom measurements to confirm the expected improvement in spatial resolution and quantitative accuracy are presented. Experimental results showing the application of this instrument for imaging human brain activation are also presented. The observed improvement in spatial resolution is confirmed by functional magnetic resonance imaging.

© 2006 Optical Society of America

OCIS Codes
(170.0110) Medical optics and biotechnology : Imaging systems
(170.3010) Medical optics and biotechnology : Image reconstruction techniques
(170.3890) Medical optics and biotechnology : Medical optics instrumentation

History
Original Manuscript: December 5, 2005
Revised Manuscript: May 19, 2006
Manuscript Accepted: May 19, 2006

Virtual Issues
Vol. 1, Iss. 12 Virtual Journal for Biomedical Optics

Citation
Danny K. Joseph, Theodore J. Huppert, Maria Angela Franceschini, and David A. Boas, "Diffuse optical tomography system to image brain activation with improved spatial resolution and validation with functional magnetic resonance imaging," Appl. Opt. 45, 8142-8151 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-31-8142


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