Dual-wavelength endoscopic laser speckle contrast imaging system for indicating tissue blood flow and oxygenation

Lipei Song; Daniel S. Elson

doi:10.1117/12.908241

9 February 2012 Dual-wavelength endoscopic laser speckle contrast imaging system for indicating tissue blood flow and oxygenation

Lipei Song, Daniel S. Elson

Author Affiliations +

Proceedings Volume 8222, Dynamics and Fluctuations in Biomedical Photonics IX; 822209 (2012) https://doi.org/10.1117/12.908241
Event: SPIE BiOS, 2012, San Francisco, California, United States

Abstract

We present a dual-wavelength endoscopic laser speckle contrast system including illumination with polarization maintaining fibres and imaging using a leached fibre image guide. This system has a frame rate of 10 Hz and can rapidly monitor changes in blood flow in vivo, including due to the heart beat, using the contrast values of the speckle images recorded with 1 ms exposure time. In addition the mean intensities can record the respiration period and can indicate changes in tissue oxygenation. This system was tested during an occlusion to a human finger and is being applied in endoscopy.

Citation Download Citation

Lipei Song and Daniel S. Elson "Dual-wavelength endoscopic laser speckle contrast imaging system for indicating tissue blood flow and oxygenation", Proc. SPIE 8222, Dynamics and Fluctuations in Biomedical Photonics IX, 822209 (9 February 2012); https://doi.org/10.1117/12.908241

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