Linked Life Data

17446926

Source:http://linkedlifedata.com/resource/pubmed/id/17446926

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
14
pubmed:dateCreated
2007-4-20
pubmed:abstractText
Analysis of the optical intrinsic signal of an exposed cortex has been applied to measurement of functional brain activation. It is important for accurate measurement of concentration changes in oxygenated hemoglobin and deoxygenated hemoglobin to consider the wavelength dependence of the mean optical path lengths for the reflectance of cortical tissue. A method is proposed to experimentally estimate the wavelength dependence of the mean optical path length in cortical tissue from the multispectral reflectance of the exposed cortex without any additional instruments. The trend in the wavelength dependence of the mean optical path length estimated by the proposed method agrees with that estimated by the model-based prediction, whereas the magnitude of the wavelength dependence predicted by the proposed method is greater than that of the model-based prediction. The experimentally predicted mean optical path length minimizes the difference in the measured changes in the concentrations of the oxygenated hemoglobin and deoxygenated hemoglobin calculated from different wavelength pairs.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0003-6935
pubmed:author
pubmed:issnType
Print
pubmed:day
10
pubmed:volume
46
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2769-77
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Experimental prediction of the wavelength-dependent path-length factor for optical intrinsic signal analysis.
pubmed:affiliation
Department of Electronics and Electrical Engineering, Keio University, Yokohama, Japan. koichiro@okd.elec.keio.ac.jp
pubmed:publicationType
Journal Article