Objectives: nanosecond laser
time to explain
time to remove tatoo
comparaison to picosecond
Introduction: A major mechanism of tattoo removal is laser assisted fragmentation of these particles, which are then transported away from the skin. For many years, Q-switched lasers with nanosecond pulse durations at high light intensities have been applied to cause such fragmentation via rapid heating up while sparing the adjacent tissue.
Materials / method: Despite the long-lasting use of such laser treatment, the exact mechanisms of laser assisted fragmentation are hardly investigated. And thre new role of the macrophage is essential and will explain in this topic.
Results: Due to short and intense laser pulses applied, non-linear effects of light (e.g. photoacoustic and optical breakdown) and nonlinear thermal properties in tattoo particles may play a crucial role.
In the past few years, lasers with even shorter pulse duration in the sub-nanosecond range were launched for tattoo removal.
Conclusion: Theoretical considerations assumed that pulse durations shorter than nanoseconds allow even more effective fragmentation of tattoo particles but is it really true ? Does it make really difference with the « old » nanosecond when you discuss cost, maintenance and result. Not sure...
利益冲突声明
您有否接受任何资金来支持研究这个主题?
否
您是否接受过关于这项研究的任何酬金或其他报酬?
否
你是否和任何与您的研究所涉及的药物,材料或工具有密切联系的实体存在财务关系?
否
你是否拥有或者您已经为您此研究中的工具,药物或材料申请任何专利?
否
这项工作没有任何直接或间接的资金支持。由作者自己承担责任。