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What is Laser?

The word “laser” derives from the initial letters of the phrase “Light Amplification by Stimulated Emission of Radiation” which means “light amplification by stimulated emission of radiation.” Laser is a special beam of light radiation, which does not exist in natural conditions, but is only produced in the laboratory with special technological equipment. laser in urologyThis light Laser light needs a source of energy (e.g. electricity) and natural production mediums (e.g. crystal, gas, dye, etc.).

Types of Laser

Depending on the physical medium used for the production of various laser types, the following laser types are primarily used in Urology:

  1. Neodymium: Yttrium-Aluminium-Garnet (Nd: YAG) Laser – Often used in urology, in both endoscopic and interventional gastroenterology surgery.
  2.  Holmium:YAGLaser – Mainly used in endoscopic lithotripsy and intraurethral prostatectomy
  3.  Diode Laser – Mainly used in intraurethral prostatectomy

Laser tissue affect

The energy transferred via Laser is absorbed by the target organ and converted to heat.

Basic Laser irradiation affects in human tissue depends on several factors, such as:

  •  tissue type
  •  laser exposure time
  •  beam Laser wavelength (in nm)
  •  beam Laser power (in Watt).

In surgical procedures, laser energy impact on tissue may cause two types of reaction:

  •  coagulation and
  •  sublimation