OSA's Digital Library

Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 5, Iss. S1 — May. 31, 2007
  • pp: S235–S236

Blood flow analyses with laser speckle flowgraphy

Hitoshi Fujii, Naoki Konishi, and Min-Chul Lee  »View Author Affiliations


Chinese Optics Letters, Vol. 5, Issue S1, pp. S235-S236 (2007)


View Full Text Article

Acrobat PDF (267 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations
  • Export Citation/Save Click for help

Abstract

In the last two decades we have studied and developed two types of laser speckle flowgraphy (LSFG) systems to visualize blood flow distribution in skin tissue, human retina, etc.. The system based on analyses of the laser scattering phenomena consists of a diode laser, illuminating and imaging optical systems, an image sensor, a frame capture board, and a personal computer. By evaluating the time variation of the image speckles at each pixel point in the image sensor, and displaying the results in a two-dimensional (2D) color coded map, the blood flow distribution in the target tissue appears on the personal computer monitor. Currently LSFG systems are divided into two types. One type uses a charge coupled device (CCD) camera and is capable of visualizing the fast blood flow change with a rate of 30 maps/s and useful for ophthalmologic research. The other one consists of a line sensor and a stepping motor which is suitable for measuring the blood flow in a wide area of skin tissue. Various types of LSFG instruments used in clinical studies are demonstrated.

© 2007 Chinese Optics Letters

OCIS Codes
(110.6150) Imaging systems : Speckle imaging
(120.6150) Instrumentation, measurement, and metrology : Speckle imaging
(170.6480) Medical optics and biotechnology : Spectroscopy, speckle

Citation
Hitoshi Fujii, Naoki Konishi, and Min-Chul Lee, "Blood flow analyses with laser speckle flowgraphy," Chin. Opt. Lett. 5, S235-S236 (2007)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-5-S1-S235

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

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited