The Journal of Japan Society for Laser Surgery and Medicine
Online ISSN : 1881-1639
Print ISSN : 0288-6200
ISSN-L : 0288-6200
Evaluation of Intestinal Blood Flow Using Laser Speckle Phenomena
Kunihiko Nohira, Hiroharu Igawa, Yoshihisa Shintomi, Takehiko Ohura, Hitoshi Fujii, Yasuhiro Harada, Toshimitsu Asakura, Masao Hosokawa
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1987 Volume 7 Issue 3 Pages 107-108

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Abstract
Power spectral distribution (PSD) of the laser speckle fluctuations produced by the blood flow in the intestinal mucosa of a rabbit are studied experimentally. It is found that the PSD takes a Gaussian profile being different from those produced by the skin blood flow. The mean frequency fm of the speckle signal is measured to evaluate the blood flow level. The value of fm,is shown to decrease from 1.8kHz to 1.0kHz when the vascular pedicle of the intestine is clamped.
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