Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

An Optical Pathlength Meter for Near Infrared Spectroscopy

Not Accessible

Your library or personal account may give you access

Abstract

Many commercial clinical Near Infrared Spectroscopy (NIRS) instruments rely upon estimates of the optical pathlength of tissue based upon the optode spacing multiplied by an average differential pathlength factor(DPF) for the tissue under investigation. Significant variation in the published DPF is the major source of error in the NIRS data quantification. To reduce this error, an inexpensive, stand-alone, single wavelength, single frequency optical pathlength meter based on the homodyne phase method was constructed for clinical use with an existing NIRO 300 instrument (Hamamatsu Photonics KK). The construction and testing of the optical pathlength meter is discussed.

© 2001 OSA/SPIE

PDF Article
More Like This
A Modular, Multiwavelength, Wideband, Intensity Modulated Optical Spectrometer for Localised Near Infrared Spectroscopy

Iain D. C. Tullis, Mark Cope, and David T. Delpy
4434_99 European Conference on Biomedical Optics (ECBO) 2001

Multi-Wavelength, Depth Resolved, Scattering and Pathlength Corrected in-vivo Near-Infrared Spectroscopy of Brain Tissue

Ilias Tachtsidis, Terence S. Leung, Arnab Ghosh, Martin Smith, Chris E. Cooper, and Clare E. Elwell
BTuB7 Biomedical Optics (BIOMED) 2010

How does the differential pathlength factor for steady-state near-infrared spectroscopy of homogeneous medium vary with geometry?

Daqing Piao, Randall L. Barbour, Harry L. Graber, and Daniel C. Lee
JT3A.45 Bio-Optics: Design and Application (BODA) 2015

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved