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, realtime ablation depth monitoring should be applied to this treatment in spite of the ablation depth can be roughly judged through gastric endoscope by ablation surface color change. The back scattered 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 small spectral dip at ICG absorption wavelength. We demonstrated that this dip depth was corresponded to the remained ICG stained submucosal layer thickness. We concluded that this simple spectral monitoring may be effective to prevent gastric perforation during ICG enhanced diode laser ablation therapy.
|ジャーナル||Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings|
|出版ステータス||Published - 1998|
|イベント||Proceedings of the 1998 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 4 (of 6) - Hong Kong, China|
継続期間: 1998 10月 29 → 1998 11月 1
ASJC Scopus subject areas
- コンピュータ ビジョンおよびパターン認識