Casparian J M, Krell J
University of Kansas Medical Center, Kansas City, Kansas 66160-7319, USA.
Dermatol Surg. 2000 Mar;26(3):255-8. doi: 10.1046/j.1524-4725.2000.09206.x.
Q-switched lasers are commonly used to achieve tattoo removal, utilizing the principle of selective photothermolysis. However, certain tattoo pigments may darken following laser pulsing.
To determine whether this side effect can be used to therapeutic advantage in a woman who previously had her eyebrows enhanced with a dark tattoo that spontaneously changed to a reddish hue over time.
The woman's eyebrows were pulsed with the Q-switched Nd:YAG laser at both 532 nm and 1064 nm.
The test areas pulsed with the 1064 nm laser revealed partial clearing. However, 532 nm Q-switched Nd:YAG pulses produced darkening of tattoo pigment both at the test sites and in the subsequent treatment.
Q-switched lasers can produce darkening of red tattoo pigment. In some cases this side effect can be used to therapeutic advantage.
调Q激光通常用于纹身去除，利用选择性光热解原理。然而，某些纹身颜料在激光脉冲后可能会变黑。
确定这种副作用是否可用于治疗一名此前用深色纹身纹眉、随着时间推移纹身自发变为微红颜色的女性。
使用调Q Nd:YAG激光在532纳米和1064纳米波长对该女性的眉毛进行脉冲照射。
用1064纳米激光脉冲照射的测试区域显示部分清除。然而，532纳米调Q Nd:YAG激光脉冲在测试部位以及后续治疗中均导致纹身颜料变黑。
调Q激光可使红色纹身颜料变黑。在某些情况下，这种副作用可用于治疗。
