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首页> 外文会议>Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems IX >Laser-assisted hair transplantation: histologic comparison between holmium:YAG and CO2 lasers
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Laser-assisted hair transplantation: histologic comparison between holmium:YAG and CO2 lasers

机译：激光辅助头发移植：：YAG和CO2激光的组织学比较

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Abstract: The histological effects of flash-scanned CO$-2$/ and pulsed Holmium:YAG lasers were evaluated in human scalp following the creation of hair transplant recipient channels. Ho:YAG laser irradiation created larger zones of thermal injury adjacent to the laser channels than irradiation with the CO$-2$/ laser device. When the two lasers created recipient sites of nearly equal depth, the Holmium:YAG laser caused a larger region of lateral thermal damage than the CO$-2$/ laser. In addition, Holmium:YAG irradiated specimens exhibited fractures or discontinuities beyond the region of clear thermal injury. This shearing effect is consistent with the photoacoustic mechanism of ablation associated with pulsed mid-IR laser irradiation. In contrast, channels created with the CO$-2$/ exhibited minimal epithelial disruption and significantly less lateral thermal damage. While the Holmium:YAG laser is a useful tool for ablation soft tissue with minimal char in select applications, this study suggests that the use of the CO$-2$/ laser for the creation of transplantation recipient channels result in significantly less lateral thermal injury for the laser parameters employed. !27
机译：摘要：建立毛发移植受体通道后，在人头皮中评估了闪光灯扫描的CO $ -2 $ /和脉冲d：YAG激光的组织学作用。 Ho：YAG激光辐照比使用CO $ -2 $ /激光设备辐照在激光通道附近产生更大的热损伤区域。当两个激光器产生的接收点深度几乎相等时，Holmium：YAG激光器比CO $ -2 $ /激光器造成更大的侧向热损伤区域。此外，Hol：YAG辐照的样品在明显的热损伤区域以外还显示出断裂或不连续性。这种剪切效应与与脉冲中红外激光辐照相关的消融的光声机理是一致的。相比之下，使用CO $ -2 $ /创建的通道表现出最小的上皮破坏和明显更少的侧向热损伤。尽管Holmium：YAG激光在某些应用中是消融软组织且焦炭极少的有用工具，但这项研究表明，使用CO $ -2 $ /激光创建移植受体通道可显着减少侧向热损伤对于所使用的激光参数。 ！27

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