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首页> 外文期刊>Dermatologic surgery >A pulsed dye laser with a 10-mm beam diameter and a pigmented lesion window for purpura-free photorejuvenation.
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A pulsed dye laser with a 10-mm beam diameter and a pigmented lesion window for purpura-free photorejuvenation.

机译：脉冲染料激光束直径为10毫米，带有色素沉着的病变窗口，可实现无紫癜的光子嫩肤。

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BACKGROUND AND OBJECTIVES: In traditional pulsed dye lasers (PDLs), power limitations and pulse characteristics have compromised purpura-free procedures. This study evaluated a new PDL with a modified pulse structure and a 10-mm beam diameter for purpura-free photorejuvenation. A compression handpiece was used for targeting lentigines. MATERIALS AND METHODS: Twenty patients with skin types I to III were treated three times at 3- to 4-week intervals. The first pass was delivered through a 10-mm compression handpiece to target pigment dyschromias using fluences between 6.5 and 8.0 J/cm(2) with a 1.5-ms pulse duration. A second pass was then performed with a 10-mm spot with fluences between 9.5 and 10 J/cm(2), a 20-ms pulse duration, and cryogen spray enabled. Improvement was evaluated by comparing pre- and posttreatment photographs and live subjects 1 month after the third treatment. RESULTS: In the majority of patients, >90% reduction of fine telangiectasias (<0.6 mm) and dark lentigines was achieved. Pigmented dyschromias improved proportional to the degree of pigment at presentation. Avoidance of purpura with the compression handpiece was dependent on obtaining proper compression before laser emission. Mean textural improvement was 34%. CONCLUSIONS: The new 595-nm PDL is highly effective for two-pass purpura-free improvement of telangiectases, pigment dyschromias, and texture.
机译：背景与目的：在传统的脉冲染料激光器（PDL）中，功率限制和脉冲特性已经损害了无紫癜的治疗程序。这项研究评估了一种新的PDL，该PDL具有改进的脉冲结构和10 mm的光束直径，用于无紫癜的光子嫩肤。压缩手机用于靶向小金鸡。材料与方法：20例I至III型皮肤患者，每3至4周间隔接受3次治疗。第一次传递通过10毫米压缩手机，以6.5至8.0焦耳/厘米（2）的能量通量以1.5毫秒的脉冲持续时间到达目标色素减色症。然后以10mm的光斑在9.5和10J / cm（2）之间的通量，20ms的脉冲持续时间和启用的低温喷雾剂进行第二遍扫描。通过比较治疗前和治疗后的照片以及第三次治疗后1个月的活体受试者来评估改善情况。结果：在大多数患者中，细毛细血管扩张（<0.6 mm）和深色龙胆素减少了90％以上。色素性色素减退症的改善与出现时色素的程度成正比。用压缩手机避免紫癜取决于在发射激光之前获得适当的压缩。平均质地改善为34％。结论：新的595 nm PDL对改善毛细血管扩张酶，色素性色素减退和质地的两次无紫癜的治疗非常有效。

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