NDLI: Hyperspectral Algorithm for Mapping Tissue Oxygen Saturation

Content Provider	IEEE Xplore Digital Library
Author	Beach, J.M. Ning, J.F. Khoobehi, B.
Copyright Year	2006
Description	Author affiliation: Inst. for Technol. Dev., Stennis Space Center, MS (Beach, J.M.)
Abstract	A simple algorithm based on computational estimates of spectral feature amplitudes in hyperspectral images is described for mapping oxygen delivery in tissue. Features are determined from contiguous image bands spanning the prominent absorption wavelengths of hemoglobin. Pixel values along the z-axis at each image coordinate establish a spectral curve. A reference baseline is obtained by linear interpolation between isosbestic points on the curve which are insensitive to changes in oxygen saturation of the blood. An oxygen-sensitive vector is determined from areas between the recorded curve and baseline, which estimates relative amounts of oxyhemoglobin and deoxyhemoglobin that contribute to the blood spectrum. Corrections are applied to account for variation in total light between recordings, and for the volume of blood at each pixel location in the recording. Here we apply the method to map relative oxygen saturation in the optic nerve head and overlying retinal vessels at normal and elevated intraocular pressure
Starting Page	142
Ending Page	145
File Size	4856889
Page Count	4
File Format	PDF
ISBN	1424404126
DOI	10.1109/NORSIG.2006.275213
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-06-07
Publisher Place	Iceland
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Interpolation Oxygen Absorption Optical recording Optical saturation Vectors Amplitude estimation Blood Pixel Hyperspectral imaging
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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