
Proceedings Paper
Development of a laser speckle imaging system for measuring relative blood flow velocityFormat | Member Price | Non-Member Price |
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Paper Abstract
Determining the viability of damaged or surgically reconstructed tissue is critical in most plastic and reconstructive
surgery procedures. Information about tissue blood flow in the region in question can make this determination much
easier. Laser speckle imaging (LSI) is one technique that could potentially aid in making this determination. LSI is a
non-contact full-field imaging technique with simultaneous high spatial and temporal resolution. Tissue is illuminated
with diffuse red laser light and the spatial and/or temporal statistics of the resulting speckle pattern can be used to
calculate relative flow velocities.
We have developed a LSI system that produces relative velocity blood flow images. Bench tests of the system indicate
that it may be used to distinguish between normal, decreased, and increased blood flow states of a human finger. The
system has also been used to take some initial laboratory measurements using an animal model - an epigastric free flap
on a rat. Preliminary results indicate that the method may be used to distinguish states of venous or arterial occlusion
from unoccluded states of the skin flap. While further experimentation is necessary, these initial results indicate that LSI
could be a useful aid to the plastic surgeon for assessing tissue viability.
Paper Details
Date Published: 8 September 2006
PDF: 8 pages
Proc. SPIE 6343, Photonics North 2006, 634304 (8 September 2006); doi: 10.1117/12.706548
Published in SPIE Proceedings Vol. 6343:
Photonics North 2006
Pierre Mathieu, Editor(s)
PDF: 8 pages
Proc. SPIE 6343, Photonics North 2006, 634304 (8 September 2006); doi: 10.1117/12.706548
Show Author Affiliations
Michael S. D. Smith, National Research Council Canada (Canada)
Ernie F. Packulak, National Research Council Canada (Canada)
Ernie F. Packulak, National Research Council Canada (Canada)
Michael G. Sowa, National Research Council Canada (Canada)
Published in SPIE Proceedings Vol. 6343:
Photonics North 2006
Pierre Mathieu, Editor(s)
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