Measurement of Ablation Threshold for Interaction between Tissue and Excimer Laser

Abstract

Photoablation occurs in laser-irradiated tissue when the laser parameters are adjusted appropriately. This effectively removes the target tissue directly by breaking the molecular bonds and expunging the decomposed fragments. Excimer lasers in pulse mode emit photons carrying enough energy to break the bonds. To analyze the profile of ablation craters and their depth, a new method using CT imaging was developed and verified. Values of depth determined through this method were compared with values obtained by other methods. The aim of our experiments was to determine the ablation threshold for interaction between excimer laser and different types of tissue. Experimentally obtained values of all measured variables are in accordance with values available in current publications.