Diffuse optical tomography system to image brain activation with improved spatial resolution and validation with functional magnetic resonance imaging - PubMed (original) (raw)
. 2006 Nov 1;45(31):8142-51.
doi: 10.1364/ao.45.008142.
Affiliations
- PMID: 17068557
- DOI: 10.1364/ao.45.008142
Diffuse optical tomography system to image brain activation with improved spatial resolution and validation with functional magnetic resonance imaging
Danny K Joseph et al. Appl Opt. 2006.
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.
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