9 July 2001 Mechanical behavior of cartilage during laser irradiation
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Proceedings Volume 4257, Laser-Tissue Interaction XII: Photochemical, Photothermal, and Photomechanical; (2001); doi: 10.1117/12.434740
Event: BiOS 2001 The International Symposium on Biomedical Optics, 2001, San Jose, CA, United States
Abstract
Internal stress σ(t), diffuse transmitted light intensity I(t) from a He-Ne probe laser (λ= 632.8 nm), and radiometric surface temperature Ts(t) were measured during the photothermal heating of porcine septal cartilage using a pulsed Nd:YAG laser (λ= 1.32 μm). Rectangular specimens, 1-4 mm thick, were secured to a tensile force testing rig and laser irradiated. Force measurements during heating showed significant variation in the rate of deformation, which were found to be strong dependent on tissue orientation; revealing the anisotropic nature of its thermo-mechanical properties. These finding suggest that the collagen and proeoglycan networks lie in a preferential orientation within the extracellular matrix, which must be addressed before this procedure can be used on a wider basis.
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Sergio H. Diaz-Valdes, Enrique J. Lavernia, Brian Jet-Fei Wong, "Mechanical behavior of cartilage during laser irradiation", Proc. SPIE 4257, Laser-Tissue Interaction XII: Photochemical, Photothermal, and Photomechanical, (9 July 2001); doi: 10.1117/12.434740; https://doi.org/10.1117/12.434740
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KEYWORDS
Cartilage

Laser irradiation

Laser tissue interaction

Light scattering

Tissues

Nd:YAG lasers

Laser beam diagnostics

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