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Estimation of light detection efficiency for different light guides used in time-resolved near-infrared spectroscopy

Paper ID Volume ID Publish Year Pages File Format Full-Text
5177 347 2015 5 PDF Available
Title
Estimation of light detection efficiency for different light guides used in time-resolved near-infrared spectroscopy
Abstract

Time-resolved near-infrared spectroscopy is a technique enabling the assessment of changes in oxygenation and perfusion of tissue with depth discrimination. A challenge in time-resolved measurements remains to provide sufficiently high efficiency of photons detection together with high temporal resolution of the setup. The aim of this study was to compare the performance of different fiber bundles and liquid light guides which can be used in time-resolved near-infrared spectroscopy measurements. The comparison was carried out by measurements of the instrument response function and of the responsivity of the optical detection system equipped with different types of light guides. The responsivity was estimated employing a test phantom with known diffuse transmittance factor. The results suggest that application of liquid light guides provides higher efficiency of photon collection in comparison to fiber bundles which are typically used in tissue optics instrumentation.

Keywords
Diffuse reflectance; Time-resolved optical measurements; Optical fiber bundles; Liquid light guides
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Estimation of light detection efficiency for different light guides used in time-resolved near-infrared spectroscopy
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biocybernetics and Biomedical Engineering - Volume 35, Issue 4, 2015, Pages 227–231
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us