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Proceedings Paper

Tattoo removal in micropigs with low-energy pulses from a Q-switched Nd:YAG laser at 1064 nm
Author(s): Xin-Hua Hu; W. A. Wooden; Mickael J. Cariveau; Qiyin Fang; J. F. Bradfield; Gerhard W. Kalmus; S. J. Vore; Y. Sun
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Paper Abstract

Treatment of pigmented lesions in skin with visible or near- infrared nanosecond (ns) laser pulses often causes significant collateral tissue damage because the current approach uses pulses with energy of 300 mJ or larger. Additionally, this requires large Q-switched laser systems. To overcome these disadvantages, we have investigated a different approach in delivering ns laser pulses for cutaneous lesion treatment. Tattoo removal in an animal model with a focused laser beam from a Q-switched Nd:YAG laser has been investigated in two Yucatan micropigs tattooed with blue, black, green and red pigments. The tattoos were treated with a focused beam of 12-ns pulses at 1064 nm, with different depth under the skin surface, while the micropig was translated to achieve an effect of single pulse per ablation site in the skin. With the pulse energy reduced to a range from 38 to 63 mJ, we found that nearly complete clearance was achieved for blue and black tattoos while clearance of red and green tattoos was incomplete. Analysis of the skin appearance suggested that the pulse energy can be decreased to below 20 mJ which may lead to further reduction of the collateral tissue damage and improve the clearance of red and green tattoos.

Paper Details

Date Published: 21 May 2001
PDF: 6 pages
Proc. SPIE 4244, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems XI, (21 May 2001); doi: 10.1117/12.427822
Show Author Affiliations
Xin-Hua Hu, East Carolina Univ. (United States)
W. A. Wooden, East Carolina Univ. (United States)
Mickael J. Cariveau, East Carolina Univ. (United States)
Qiyin Fang, East Carolina Univ. (United States)
J. F. Bradfield, East Carolina Univ. (United States)
Gerhard W. Kalmus, East Carolina Univ. (United States)
S. J. Vore, East Carolina Univ. (United States)
Y. Sun, East Carolina Univ. (United States)

Published in SPIE Proceedings Vol. 4244:
Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems XI
Lawrence S. Bass; David S. Robinson; Eugene A. Trowers; Kenton W. Gregory; Lou Reinisch; Kenneth Eugene Bartels; R. Rox Anderson; Reza S. Malek; Kenneth Eugene Bartels; Lloyd P. Tate; Abraham Katzir; C. Gaelyn Garrett; Timothy A. Woodward; Hans-Dieter Reidenbach; George M. Peavy; Lawrence S. Bass; C. Gaelyn Garrett; Michael D. Lucroy; Kenton W. Gregory; Abraham Katzir; Nikiforos Kollias; Michael D. Lucroy; Reza S. Malek; J. Stuart Nelson; George M. Peavy; Hans-Dieter Reidenbach; Lou Reinisch; David S. Robinson; Lloyd P. Tate; Eugene A. Trowers; Timothy A. Woodward, Editor(s)

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