Share Email Print

Proceedings Paper

Material ejection in free-running Er:YAG laser ablation of water, liver, and skin
Author(s): Alfred Vogel; Bram Kersten; Ingo Apitz
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We investigated the mechanisms of material ejection in IR laser tissue ablation using free-running Er:YAG laser pulses. We found that for water and soft tissues such as liver the primary mechanism for material ejection is a phase explosion within the target material. The recoil induced by the primary material ejection causes a secondary material expulsion that largely increases the ablation efficiency. For mechanically stronger tissues such as skin, the material ejection is driven by confined boiling, and recoil-induced expulsion plays no role. The high efficiency of recoil-induced material expulsion is associated with a loss in ablation precision and an increase of mechanical side effects that needs to be considered for an appropriate choice of laser parameters.

Paper Details

Date Published: 27 August 2003
PDF: 8 pages
Proc. SPIE 4961, Laser-Tissue Interaction XIV, (27 August 2003); doi: 10.1117/12.477706
Show Author Affiliations
Alfred Vogel, Medizinisches Laserzentrum Luebeck GmbH (Germany)
Bram Kersten, Medizinisches Laserzentrum Luebeck GmbH (Germany)
Ingo Apitz, Medizinisches Laserzentrum Luebeck GmbH (Germany)

Published in SPIE Proceedings Vol. 4961:
Laser-Tissue Interaction XIV
Donald Dean Duncan; Sean J. Kirkpatrick; Andres Kriete; Steven L. Jacques, Editor(s)

© SPIE. Terms of Use
Back to Top