OSA's Digital Library

Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 9, Iss. 4 — Apr. 1, 2014

Simple correction factor for laser speckle imaging of flow dynamics

J. C. Ramirez-San-Juan, R. Ramos-Garcia, G. Martinez-Niconoff, and B. Choi  »View Author Affiliations


Optics Letters, Vol. 39, Issue 3, pp. 678-681 (2014)
http://dx.doi.org/10.1364/OL.39.000678


View Full Text Article

Enhanced HTML    Acrobat PDF (186 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

One of the major constraints facing laser speckle imaging for blood-flow measurement is reliable measurement of the correlation time (τC) of the back-scattered light and, hence, the blood’s speed in blood vessels. In this Letter, we present a new model expression for integrated speckle contrast, which accounts not only for temporal integration but spatial integration, too, due to the finite size of the pixel of the CCD camera; as a result, we find that a correction factor should be introduced to the measured speckle contrast to properly determine τC; otherwise, the measured blood’s speed is overestimated. Experimental results support our theoretical model.

© 2014 Optical Society of America

OCIS Codes
(120.6150) Instrumentation, measurement, and metrology : Speckle imaging
(170.3880) Medical optics and biotechnology : Medical and biological imaging

ToC Category:
Imaging Systems

History
Original Manuscript: November 6, 2013
Revised Manuscript: December 20, 2013
Manuscript Accepted: December 23, 2013
Published: January 30, 2014

Virtual Issues
Vol. 9, Iss. 4 Virtual Journal for Biomedical Optics

Citation
J. C. Ramirez-San-Juan, R. Ramos-Garcia, G. Martinez-Niconoff, and B. Choi, "Simple correction factor for laser speckle imaging of flow dynamics," Opt. Lett. 39, 678-681 (2014)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-39-3-678

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited