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Face and neck rejuvenation using an improved non-ablative fractional high power 1064-nm Q-switched Nd:YAG Laser: clinical results in 16 women
摘要： Objective: To evaluate the safety and efficacy of a specific treatment protocol using a new and improved non-ablative fractional high-power 1064-nm Q-switched Nd:YAG laser for face and neck rejuvenation. Methods: Sixteen women, aged 30 to 60 years old, were selected to undergo three consecutive treatment sessions with this new laser at maximum energy (2,400 mJ/pulse, Clear Lift laser?-Harmony XL-Pro, Alma Lasers Ltd.). Face and neck were treated in eight patients, respectively. Each treatment used the same protocol. The efficacy was evaluated by the therapist (TS), the patient (PS), and two separate independent experts who were blind to the study (E1 and E2). Results: According to E1 and E2, the mean reduction in signs of skin aging on a Global Esthetic Improvement Scale was 30-40%. Using a 0–10 points scale, TS and PS mean (range) satisfaction rates were 9.0 (8–10); 9.2 (6–10) for the face and 8.7 (8–10); 8.0 (3–10), for the neck, respectively. The procedure was practically painless, no significant adverse effects were observed, and the patients returned to their daily and work activities without downtime. Conclusion: This laser was safe and effective for face and neck minimally invasive rejuvenation, with excellent results using our usual routine use conditions.
关键词： fractionated laser,resurfacing,Q-Switched Nd:YAG laser,Skin rejuvenation,non-ablative laser
更新于2025-09-23 15:19:57
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Tattoo??removal a??the artistic state of the art.a?? Tattoo on forehead, nose, and chin: Successful removal with modified R20 technique using low-fluence Q-switched Nd YAG laser: A case report
摘要： Background: Tattooing is an ancient practice that has been performed all over the world which is used to beautify the skin and augment beauty. Regrettable tattoos are treated with Q switch lasers, in many sessions, and the effectiveness is doubtful. Objectives: The aim of this paper is to demonstrate how a unique protocol of R20 Q switch Nd YAG laser, can be employed successfully in removing long standing facial tattoos, in skin type IV, in an effective disciplined timing and cost wise modalities. The adopted method was a-4 single passes, with 20 minutes gap respectively. Methods and Results: A lady received the conventional Q switch laser at one session, with no noticeable results. On the other session, she received the R20 method, and an immediate whitening reaction was observed. No adverse reactions were noted. Conclusion: The R20 Q technique is very effective tool in a single treatment session than the conventional multiple laser sessions, in tattoo removal, and I would invite other dermatologists utilize it in their clinical setting. This method does not need any newer laser technology, clears the tattoo fast, and cuts down unnecessary treatment duration and cost.
关键词： Q switched Nd YAG laser,R20,laser tattoo removal
更新于2025-09-23 15:19:57
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Effect of Q‐switched Nd‐YAG laser on the clinical, pigmentary and immunological markers in the patients with lichen planus pigmentosus: A pilot study
摘要： The persistent discolouration in lichen planus pigmentosus is secondary to persistent melanophages in superficial dermis in these patients. We evaluated the effect of Q-switched Nd-YAG laser on the clinical, pigmentary and immunological markers in the patients with lichen planus pigmentosus. Nine females with a clinical diagnosis of lichen planus pigmentosus were included in the study. After six sessions of laser with toning protocol, performed over a representative area of 5x5 cm2 at 2-weekly intervals, the mean clinical improvement as per the physician assessment was 25.7% (10-40%). There was no significant reduction in melanin and erythema index. On expression analysis using reverse transcriptase polymerase chain reaction, the reduction in tyrosinase (p=0.03) was statistically significant, though, the reduction in other pigment and immunological markers was not significant. The immunohistochemistry quantification data of corresponding proteins also did not show any significant difference. Post inflammatory hypopigmentation was noted in one patient. Q-switched Nd-YAG laser toning protocol resulted in modest clinical and histological improvement in patients of lichen planus pigmentosus.
关键词： Lichen planus pigmentosus,Q-switched Nd-YAG laser,melanophages
更新于2025-09-12 10:27:22
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Passively Q-switched Nd:YAG laser at 1074.1 nm
摘要： We report a passively Q-switched Nd:YAG laser at 1074.1 nm based on an elaborate plane-plane cavity. By optimizing coatings of the cavity, the fierce parasitic transitions at 1064, 1112 and 1123 nm are suppressed, and the line at 1074 nm is individually amplified. The CW power of 1480 mW at 1074.1 nm is achieved at a pump power of 10.0 W. The single-wavelength line at 1074.1 nm in the passively Q-switched regime is obtained and produces stable pulses as short as 23.7 ns with peak power of 1584 W.
关键词： Q-switched,Nd:YAG laser,1074.1 nm laser
更新于2025-09-11 14:15:04
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Treatment of lichen pilaris with a Q-switched Nd:YAG laser in quasi long-pulsed mode: A case report (a secondary publication)
摘要： Background and Aims: Lichen pilaris is a very common disease typically seen among young adults on their upper arms as a manifestation of hyperkeratotic lesions occurring in the pores. Only a few treatments have been reported as significantly effective, so often natural resolution over time is the only option. The present study examined the use of a 1064 nm Q-switched Nd:YAG laser (QSNY) in quasi long-pulsed mode, in an attempt to treat a case of lichen pilaris. Subject and Methods: A 33-year-old male presented with light-brown aggregated papules observed on both sides of the upper arms. The affected areas were treated every other week (QSNY, pulse width 300 μs, pulse energy 3.0 J/cm2, spot size 6 mm and repetition rate 10 Hz). Clinical photography was taken of the lesions at baseline and three months after the final treatment in addition to macrophotography and 3-D photography, biopsies being taken at both time points for histological comparison. Results: The clinical photography and objective image evaluation demonstrated shrinkage of pores and improvement of the unevenness of the skin. Histological examination suggested that the effect of the micropulsed QSNY on the horny layer, epidermal keratinocytes and dermal collagen resulted in a peeling effect and increased dermal collagen density, which eventually led to the shrinkage of the pores and improvement of the skin condition. Conclusions: The results of this single patient case report suggest that the micropulsed QSNY could be an effective treatment option for lichen pilaris, improvement of which is often difficult. Further studies with an appropriately-sized population are merited to confirm these preliminary results.
关键词： Q-switched Nd:YAG Laser,Lichen pilaris,Histological examination,Quasi long-pulsed mode
更新于2025-09-11 14:15:04