Abstract
In in vitro and animal experiments the tissue effects of the 1.318μm Nd-YAG laser were compared to those of the standard 1.064μm Nd-YAG laser in order to evaluate the advantages of the new wavelength with a ten times higher absorption in water for gastroenterological tumour treatment. Under irradiation parameters related to clinical endoscopic practice, the laser of the wavelength 1.318μm needs for both vaporization and coagulation significantly less energy than the 1.064μm laser. Since vaporization at 1.318μm is always accompanied by a higher coagulation effect compared to 1.064μm the risk of late necrosis and resulting perforation appears to be increased.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Choy D, Frank F, Wondrazek F et al. Preliminary observations of interaction between several tissues and Nd-YAG laser at two wavelengths.Las Surg Med 1985,5:173[abstract 117]
Delvaux M, Escourrou J. Complications observées au cours du traitment par laser des tumeurs du tractus digestif supérieur.Acta Endosc 1985,15:13
Ell Ch, Riemann JF, Lux G, Demling L. Palliative laser treatment of malignant stenoses in the upper gastrointestinal tract.Endoscopy 1986,18:21 [Suppl. 1]
Frank F, Beck OJ, Häussinger K et al. Comparative Investigation of Tissue Reaction with 1.06μm and 1.32μm Nd-YAG Laser Radiation. In: Waidelich W, Kiefhaber P (eds)Laser/Optoelectronics in Medicine. Proceedings of the 7th International Congress Laser '85 Optoelectronics with 2nd International Nd-YAG Conference. Berlin-Heidelberg-New York-Tokyo: Springer Verlag 1986, 290–3
Giedl J. Morphology changes with lasers. In: Riemann JF, Ell Ch (eds)Lasers in Gastroenterology. Stuttgart: Thieme Verlag 1988
Heldwein W, Lehnert P, Wiebecke B et al. Investigation of a new 1.32μm Nd-YAG laser for treatment of bleeding peptic ulcers—experiments on dog stomach.Lasers Med Sci 1987,2:189
Hochberger J, Ell Ch. The 1.32μm Nd-YAG Laser. A new instrument for the use in gastroenterology. In: Riemann JF, Ell Ch (eds)Lasers in Gastroenterology. Stuttgart: Thieme Verlag 1988
Hofstetter A, Frank F. Der neodym YAG-laser in der urologie.Editiones Roche. Basel 1979
Krasner N, Beard J. Laser irradiation of tumours of the oesophagus and gastric cardia.Br Med J 1984,288:829
Sander R, Pösl H, Strobel M et al. Nd-YAG Laser in der Gastroenterologie—Erste Ergebnisse experimenteller und klinischer Studien mit der 1,32μm Wellenlänge.Laser Med Surg 1986,2:167–71
Stokes LF, Auth DC, Tanaka D et al. Biomedical Utility of 1.32μm Nd-YAG Laser Radiation.IEEE Trans Biomed Eng BME 1981,28:197–299
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Hochberger, J., Guenter, E. & Ell, C. In comparison: 1.064 μm-1.318 μm Nd-YAG continuous wave lasers. In vitro and in vivo experiments for endoscopic tumour therapy in the gastrointestinal tract. Laser Med Sci 4, 25–31 (1989). https://doi.org/10.1007/BF02032506
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02032506