Abstract

We developed a dual-wavelength laser speckle imaging system using a single industrial-grade color CCD camera with Bayer filters to simultaneously image changes in blood flow, blood volume, and oxygenation. One frame of a color image recorded with dual-wavelength laser illumination provides not only the intensity fluctuation of the speckle pattern, but also the dual-wavelength optical reflectance signal. The method was validated using a tissue phantom and cuff ischemia experiments in the human arm. This system achieves complete time synchronization, unlike conventional time-sharing systems. Compared with a multicamera system, it also avoids the problem of image registration and can be less expensive.

© 2013 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Laser speckle imaging using a consumer-grade color camera

Owen Yang and Bernard Choi
Opt. Lett. 37(19) 3957-3959 (2012)

Low-cost laser speckle contrast imaging of blood flow using a webcam

Lisa M. Richards, S. M. Shams Kazmi, Janel L. Davis, Katherine E. Olin, and Andrew K. Dunn
Biomed. Opt. Express 4(10) 2269-2283 (2013)

Visualizing of skin chromophore concentrations by use of RGB images

Izumi Nishidate, Kiyohiro Sasaoka, Testuya Yuasa, Kyuichi Niizeki, Takaaki Maeda, and Yoshihisa Aizu
Opt. Lett. 33(19) 2263-2265 (2008)

References

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
Login to access OSA Member Subscription

Cited By

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
Login to access OSA Member Subscription

Figures (3)

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
Login to access OSA Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations 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
Login to access OSA Member Subscription

Metrics

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
Login to access OSA Member Subscription