Imaging of strain in a tissue phantom during pulsed holmium laser ablation

Didier Beghuin; Joseph T. Walsh Jr.; Guy P. Delacretaz; Thomas Asshauer

doi:10.1117/12.297898

14 January 1998 Imaging of strain in a tissue phantom during pulsed holmium laser ablation

Didier Beghuin, Joseph T. Walsh Jr., Guy P. Delacretaz, Thomas Asshauer

Proceedings Volume 3195, Laser-Tissue Interaction, Tissue Optics, and Laser Welding III; (1998) https://doi.org/10.1117/12.297898
Event: BiOS Europe '97, 1997, San Remo, Italy

Abstract

Laser ablation and associated bubble formation are known to damage biologic tissue. Imaging of tissue straining during ablation would help to understand and control laser-induced damages. We have used polariscopic imaging to monitor the strain induced by pulsed holmium laser irradiation. A photoelastic tissue phantom, poly(acrylamide) gel, whose viscoelastic properties could be controlled was used to mimic various tissues. The laser energy was delivered to the sample via an optical fiber placed either perpendicularly 1.7 mm from the surface or within the sample. Only compressive strain is observed when the bubble is formed within the phantom, whereas significant tensile strain is induced when the bubble is formed at or next to the surface.

Citation Download Citation

Didier Beghuin, Joseph T. Walsh Jr., Guy P. Delacretaz, and Thomas Asshauer "Imaging of strain in a tissue phantom during pulsed holmium laser ablation", Proc. SPIE 3195, Laser-Tissue Interaction, Tissue Optics, and Laser Welding III, (14 January 1998); https://doi.org/10.1117/12.297898

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