Double layer estimation of flow changes using diffuse correlation spectroscopy

Louis Gagnon; Michèle Desjardins; Louis Bherer; Frédéric Lesage

doi:10.1117/12.808272

12 February 2009 Double layer estimation of flow changes using diffuse correlation spectroscopy

Louis Gagnon, Michèle Desjardins, Louis Bherer, Frédéric Lesage

Proceedings Volume 7174, Optical Tomography and Spectroscopy of Tissue VIII; 717407 (2009) https://doi.org/10.1117/12.808272
Event: SPIE BiOS, 2009, San Jose, California, United States

Abstract

In this work, we explore diffuse correlation spectroscopy (DCS) in a two-layered geometry. We compare the effiency of an homogeneous and a two-layered model to recover flow changes. By simulating a realistic human head with MRI anatomical data, we show that the two-layered model allows distinction between superficial layers and brain hemodynamic changes. The results show that the two-layered model provides a better estimate for the flow change than the homogeneous one. Experimental measurements with a two-layered dynamical phantom confirm the ability of the two-layered analytical model to distinguish flow increase in each layer.

Citation Download Citation

Louis Gagnon, Michèle Desjardins, Louis Bherer, and Frédéric Lesage "Double layer estimation of flow changes using diffuse correlation spectroscopy", Proc. SPIE 7174, Optical Tomography and Spectroscopy of Tissue VIII, 717407 (12 February 2009); https://doi.org/10.1117/12.808272

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available