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Computation of the optical properties of tissues from light reflectance using a neural network

Wang, Lihong and Zhao, Xuemei and Jacques, Steven L. (1994) Computation of the optical properties of tissues from light reflectance using a neural network. In: Laser-Tissue Interaction V; and Ultraviolet Radiation Hazards. Proceedings of SPIE. No.2134. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 391-399. ISBN 9780819414298. https://resolver.caltech.edu/CaltechAUTHORS:20181207-161550130

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Abstract

We have established a neural network to quickly deduce optical properties of tissue slabs from the diffuse reflectance distribution. Diffusion theory based on multiple image sources mirrored about the two extrapolated boundaries is used to prepare the training and testing sets for the neural network. The neural network is trained using backpropagation with the conjugate gradient method. Once the neural network is trained, it is able to deduce optical properties of tissues within on the order of a millisecond. The range of the tissue optical properties that is covered by our neural network is 0.01 - 2 cm^(-1) for absorption coefficient, 5 - 25 cm^(-1) for reduced scattering coefficient, and 0.001 - 1 cm for tissue thickness. A separate network is also trained for thick tissue slabs. A simple experimental setup applying the trained neural network is designed to measure tissue optical properties quickly.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.182973DOIArticle
ORCID:
AuthorORCID
Wang, Lihong0000-0001-9783-4383
Additional Information:© 1994 Society of Photo-Optical Instrumentation Engineers (SPIE). We thank Linda Eppich for proofreading the manuscript. This research was supported in part by the Office of Naval Research (N00014-91-J-1354), the Air Force Office of Scientific Research (F49620-93-1-0298DEF), and the National Institutes of Health (R29-HL45045).
Funders:
Funding AgencyGrant Number
Office of Naval Research (ONR)N00014-91-J-1354
Air Force Office of Scientific Research (AFOSR)F49620-93-1-0298DEF
NIHR29-HL45045
Series Name:Proceedings of SPIE
Issue or Number:2134
Record Number:CaltechAUTHORS:20181207-161550130
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20181207-161550130
Official Citation:Lihong V. Wang, Xuemei Zhao, Steven L. Jacques, "Computation of the optical properties of tissues from light reflectance using a neural network," Proc. SPIE 2134, Laser-Tissue Interaction V; and Ultraviolet Radiation Hazards, (17 August 1994); doi: 10.1117/12.182973
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91628
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:12 Dec 2018 00:25
Last Modified:03 Oct 2019 20:36

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