Effect of repetitive laser pulses on the electrical conductivity of intervertebral disc tissue

Journal Article · Tue Mar 31 00:00:00 EDT 2009 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2009V039N03ABEH013920· OSTI ID:21466479

Omel'chenko, A I; Sobol', E N ^[1]

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1. Institute of Laser and Information Technologies, Russian Academy of Sciences, Troitsk, Moscow Region (Russian Federation)

The thermomechanical effect of 1.56-{mu}m fibre laser pulses on intervertebral disc cartilage has been studied using ac conductivity measurements with coaxial electrodes integrated with an optical fibre for laser radiation delivery to the tissue. The observed time dependences of tissue conductivity can be interpreted in terms of hydraulic effects and thermomechanical changes in tissue structure. The laserinduced changes in the electrical parameters of the tissue are shown to correlate with the structural changes, which were visualised using shadowgraph imaging. Local ac conductivity measurements in the bulk of tissue can be used to develop a diagnostic/monitoring system for laser regeneration of intervertebral discs. (laser biology and medicine)

• OSTI ID: 21466479
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 39, Issue 3; Other Information: DOI: 10.1070/QE2009v039n03ABEH013920; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CARTILAGE
DIAGNOSTIC TECHNIQUES
ELECTRIC CONDUCTIVITY
ELECTRODES
LASER RADIATION
LASERS
OPTICAL FIBERS
PULSES
REGENERATION
TIME DEPENDENCE
VERTEBRAE
ANIMAL TISSUES
BODY
CONNECTIVE TISSUE
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
FIBERS
ORGANS
PHYSICAL PROPERTIES
RADIATIONS
SKELETON