BIOMECHANICS OF LASER SPECKLE FIELDS PRODUCED BY PROBING SCATTERING TISSUES IN VIVO

Maleeva O.V., Institute of Heat and Mass Transfer n.a. A.V. Lykov of the National Academy of Sciences of Belarus, Minsk, Republic of Belarus

Fomin N.A., Institute of Heat and Mass Transfer n.a. A.V. Lykov of the National Academy of Sciences of Belarus, Minsk, Republic of Belarus

79-84

The formation and dynamics of the speckle field pattern by probing 3D nonstationary media with laser beam have been described. The examples of use of the laws of the speckle fields dynamics for bio-tissues monitoring in vivo have been given. The strict mathematical description of the bio speckle fields forming and their dynamic statistics under scattering of the laser radiation by moving have been shown. The formation and dynamics of the speckle field pattern by probing 3D nonstationary media with laser beam have been described. Examples of the use of the laws of the speckle field dynamics, that were applied for physiological monitoring in vivo, have been given. The strict mathematical description of the bio-speckle fields formation and dynamics under scattering of the later radiation on the moving erythrocytes of the biotissue has been adduced. Such description, in a number of cases, requires simple but cumbrous equations. At the same time the knowledge of the analytical dependences of the dynamic speckle fields characteristics for different optic configurations is necessary for the correct processing of specklegrams and building of the blood flow maps of biotissues under study.

speckle-field, dynamics, biological tissue, laser sensing, digital image registration

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