Correct calibration procedure for the Q-switched ruby laser and checking the treatment irradiation pattern

Area of Science:

• Medical Aesthetics
• Laser Surgery
• Dermatology

Background:

• Q-switched ruby lasers are widely used in dermatology and plastic surgery for tattoo and pigmented lesion removal.
• Regular calibration and beam pattern checks are essential for treatment efficacy and patient safety.
• Lack of measuring instruments (MI) hinders proper calibration in some clinics, impacting treatment reliability and research reproducibility.

Purpose of the Study:

• To explain precise calibration procedures for Q-switched ruby laser systems.
• To detail beam pattern checking methods for Q-switched ruby lasers.
• To emphasize the importance of regular calibration for evidence-based medicine.

Main Methods:

• Daily checks of beam patterns and optical axis using printed sheets and footprint paper.
• Bi-weekly in-house calibration using a precise measuring instrument (MI).
• Semi-annual in-house calibration with MI, followed by manufacturer calibration; annual MI calibration by an accredited facility.

Main Results:

• Consistent daily and periodic calibration ensures accurate laser system performance.
• Regular checks maintain treatment consistency and patient safety.
• Adherence to a strict calibration schedule produces reliable data for research.

Conclusions:

• Precise calibration and beam pattern verification are vital for Q-switched ruby laser treatments.
• Implementing a rigorous, multi-stage calibration protocol ensures system accuracy and treatment reproducibility.
• This systematic approach supports evidence-based practice in aesthetic and dermatologic surgery.