Clinical Gastroenterology Vol.21 No.1(2-1)

Theme The Latest Frontier of Endoscopy
Title History of OL Wavelength Band Use for Infrared Endoscopes
Publish Date 2006/01
Author Shigeaki Nagao The Department of Diagnostic and Therapeutic Digestive Endoscopy, National Defense Medical College / The Second Department of Internal Medicine, National Defense Medical College
Author Masaaki Higashiyama The Second Department of Internal Medicine, National Defense Medical College
Author Norikazu Mataki The Second Department of Internal Medicine, National Defense Medical College
Author Koji Matsuzaki The Second Department of Internal Medicine, National Defense Medical College
Author Atsushi Kawaguchi The Department of Diagnostic and Therapeutic Digestive Endoscopy, National Defense Medical College / The Second Department of Internal Medicine, National Defense Medical College
Author Hirohumi Niwa Guest Professor of St. Marianna Medical University
[ Summary ] Light rays in the non-visible optical spectrum have been applied to endoscopic use since the early 1950's.
A wide wavelength band, ranging from the short wavelengths to the long wavelengths, including ultraviolet rays, fluorescence, and infrared rays was examined to see if it was possible to put them to practical use. However, those trials failed due to various technical difficulties.
On the other hand, it must be recognized that the present stage of development is based on those early trials and research. Therefore, part of the results of the efforts of our predecessors concerning the application of non-visible light rays to endoscopic use are outlined in this text.
back