Use of Q-switched alexandrite laser (755 nm, 100 nsec) for removal of traumatic tattoo of different origins

Autor: Alejando Camps-Fresneda, Gerardo A. Moreno‐Arias, M. Casals-Andreu
Rok vydání: 1999
Předmět:
Zdroj: Lasers in Surgery and Medicine. 25:445-450
ISSN: 1096-9101
0196-8092
Popis: Background and Objectives Q-switched laser systems have been used for removal of tattoo-related carbon, graphite, and other particles. We assessed elimination of traumatic tattoos of different origin with Q-switched alexandrite laser in nine patients. Study Design/Materials and Methods Fluence threshold was determined and a spot test was made. Q-switched alexandrite laser, with a fluence range 4.5–8.0 J/cm2 (mean, 7.16 ± 1.18), was used at 4–5-week intervals. Total treatment ranged from 3–12 sessions (mean, 6.1 ± 3.6 sessions). Double-pulse technique was used in black/black-bluish areas, but single-shot was applied to slate-gray pigment. Results More than 95% lightening was achieved in five patients after 5.2 ± 2.3 sessions, and >75% lightening in six subjects after 6.1 ± 3.1 sessions of treatment. Blacktop, surgical pen, and gravel tattoos presented a better response than gunpowder/fireworks tattoos (>95% vs. 68.7 ± 23.9% clearance), or tattoos of unknown origin (>95% vs. 62.5 ± 53% clearance). Epidermal splattering and pinpoint bleeding were observed in one case. No pigmentary alteration or scarring was seen. Conclusion The Q-switched alexandrite laser is a useful system for removal of traumatic tattoos of diverse origin. The best response (>95% clearance) was achieved in blacktop, surgical pen, and gravel tattoos, although an acceptable degree of lightening may be obtained in tattoos due to gunpowder or fireworks. Lasers Surg. Med. 25:445–450, 1999. © 1999 Wiley-Liss, Inc.
Databáze: OpenAIRE
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