Pulsed holmium laser tissue ablation threshold studies

Yacov Domankevitz; Margaret S. Lee; Norman S. Nishioka

doi:10.1117/12.137491

7 August 1992 Pulsed holmium laser tissue ablation threshold studies

Yacov Domankevitz, Margaret S. Lee, Norman S. Nishioka

Proceedings Volume 1646, Laser-Tissue Interaction III; (1992) https://doi.org/10.1117/12.137491
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

Threshold radiant exposures for pulsed holmium laser ablation of tissue were measured using a high speed framing camera. The effects of laser irradiance and beam size on threshold radiant exposure were investigated. Threshold radiant exposure decreased with increasing laser irradiance over the range 10⁵-10⁷ W/cm². An increase in laser beam diameter reduced the laser irradiance required to achieve ablation over the range of spot sizes examined (243-970 μm). These results suggest that both the rate of energy deposition and laser beam geometry affect the events preceding the onset of ablation and should be considered when modeling or quantifying laser ablation of tissue.

Citation Download Citation

Yacov Domankevitz, Margaret S. Lee, and Norman S. Nishioka "Pulsed holmium laser tissue ablation threshold studies", Proc. SPIE 1646, Laser-Tissue Interaction III, (7 August 1992); https://doi.org/10.1117/12.137491

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