Abstract
Recently, not a few endoscopists have been interested in magnifing endoscopic observation of the minute gastric mucosal lesions, and several magnifing fiberscopes have been developed successfully. This time, we have had a chance to use the newly developed magnif ing f iberscope (GIF-HM), which was devesed by Olympus Optical Company. We compared this newmodeled fiberscope with an upper gastrointestinal fiberscope GIF-D3 about the specific features of those two apparatus. Their capacities are expressed on Table I. The f ibererscope GIF-HM is a foward-viewing type similar to GIF-D3, but its maximal magnif ing rate is about thirty-five times. There is no need of changing a light guide and the object can be continuously magnified smoothly, when we make it close to the gastric mucosa. also we can use the zooming effect from 10 to 70 mm in distance. Using GIF-HM for the purpose of ordinary and magnif ing observation, we could easily observe the gastric angle, and there were no blind areas in the stomach. In addition, observation could be easily performed in the esophagus and duodenal bulb. Summarization was described on Table 4. We thought, magnifing fiberscope GIF-HM was useful not only for magnif ing observation, but also for ordinary observation through the upper gastrointestinal tract.
