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首页> 外文会议>Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE >Indocyanine green enhanced diode laser ablation for porcine gastric wall with ablation depth monitoring using scattering light
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Indocyanine green enhanced diode laser ablation for porcine gastric wall with ablation depth monitoring using scattering light

机译：吲哚菁绿增强二极管激光消融用于猪胃壁的消融深度监测

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摘要

We developed laser ablation depth monitoring using scattering light on indocyanine green (ICG) enhanced diode laser ablation for gastric wall. We have developed selective diode laser ablation for ICG stained submucosa to treat submucosal gastric cancer. To prevent gastric perforation, real-time ablation depth monitoring should be applied to this treatment even though the ablation depth can be roughly judged through gastric endoscope by ablation surface color change. The backscattered light spectrum of the diode laser from the ablation area may be influenced by surface absorption and plume absorption. We observed the scattering light spectrum and found a small spectral dip at the ICG absorption wavelength. We demonstrated that this dip depth corresponded to the remained ICG stained submucosal layer thickness. We concluded that simple spectral monitoring may be effective to prevent gastric perforation during ICG enhanced diode laser ablation therapy.
机译：我们开发了使用吲哚菁绿（ICG）增强型二极管激光消融胃壁的散射光进行激光消融深度监测。我们已经为ICG染色的粘膜下层开发了选择性二极管激光消融术，以治疗粘膜下层胃癌。为了防止胃穿孔，即使可以通过胃镜通过消融表面颜色的变化粗略判断消融深度，也应对该消融深度进行实时监测。来自消融区域的二极管激光器的反向散射光谱可能会受到表面吸收和羽流吸收的影响。我们观察了散射光谱，并发现在ICG吸收波长处有一个小的光谱下降。我们证明了该浸入深度对应于剩余的ICG染色的粘膜下层厚度。我们得出的结论是，简单的频谱监测可能会有效防止ICG增强二极管激光消融治疗期间的胃穿孔。

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