Chapter 9 Lasers in Otosclerosis

Abstract

As the fluence increases, so does the volume of affected tissue. The thermal energy having an impact on tissue rises dramatically as the time of exposure increases.There are four factors that determine laser-tissue interactions:1. The laser wavelength (frequency) 2.The absorption characteristics of the tissue 3. The temporal parameters of the laser energy delivered The mechanism of the laser deliveryThis document was downloaded for personal use only. Unauthorized distribution is strictly prohibited.An incident beam of laser radiation on tissue can have one of the following effects: Reflection Absorption Scattering TransmissionThe ideal qualities of a laser for use during a stapedectomy are the following:1. Precise optics are required to focus the laser beam at the place required. 2.The laser should be able to vaporize either the bone or the collagen at the oval window in a predictable manner. 3.The thermal footprint of the laser should not be beyond (deeper than) the site of application. If it did penetrate beyond the site of application, it would cause thermal damage to the utricle and the saccule beneath. 4.The laser should not heat the perilymph.