The surface tissue effect of the CO₂ laser has a shallow penetration of 0.1 to 0.2 mm photothermal effect which serves as the laser of choice for:
A) urologic lithotripsy.
B) plastic surgery or dermatologic removal of tattoos and hemangiomas.
C) laparoscopic cholecystectomy.
D) endoscopic ablation of Barrett's esophageal dysplasia.

Question

Quizplus · Accepted Answer

The CO₂ laser is characterized by its superficial tissue interaction (0.1 to 0.2 mm),because the beam is highly absorbed by water.The degree of tissue response is related to the photothermal effect (the amount of heat buildup)from absorption of the CO₂ laser beam.The longer the CO₂ beam is in contact with tissue,as with other laser wavelengths,the more destruction occurs.With the CO₂ beam,a greater depth of penetration can be achieved.Tissue reaction is visible and has been described as "what you see is what you get."

The Surface Tissue Effect of the CO₂ Laser Has a Shallow