Defining optimal laser-fiber sweeping angle for effective tissue vaporization using 180 W 532 nm lithium triborate laser. Academic Article uri icon

Overview

abstract

  • PURPOSE: The goal of this study is to identify the most efficient sweeping angle (SA) during photoselective vaporization of the prostate (PVP). MATERIALS AND METHODS: Experiments were conducted with GreenLight XPS™ laser at 120 and 180 W. Ten blocks of porcine kidney were used for each SA (0, 15, 30, 45, 60, 90, and 120 degrees). Vaporization efficiency was assessed by the amount of tissue removed per time. The coagulation zone (CZ) thickness was also measured. RESULTS: Maximal vaporization rate (VR) was achieved at SA 15 and 30 degrees. Irrespective of power, VR increased and CZ decreased linearly with decreasing SA from 120 to 30 degrees. The CZ was the thinnest at SA 30 degrees. CONCLUSIONS: Optimal vaporization occurred at a SA of 15 degrees and 30 degrees with the lowest CZ at 30 degrees. Contrary to a previous recommendation for a wider SA (60 degrees or greater), a narrower SA (30 degrees) achieved the maximal tissue vaporization efficiency.

publication date

  • March 22, 2012

Research

keywords

  • Borates
  • Laser Therapy
  • Lasers
  • Lithium Compounds
  • Optical Fibers

Identity

Scopus Document Identifier

  • 84859550238

Digital Object Identifier (DOI)

  • 10.1089/end.2011.0356

PubMed ID

  • 22439640

Additional Document Info

volume

  • 26

issue

  • 4