Abstract
An attempt to measure a lesion in the stomach through a new model of fibergastroscope (FGS-BLG) is reported. FGS-BLG is equipped with the gauge which is observed as a bright line above the image on view of the scope. The length of this line always corresponds with the length of 1cm on the surface cf the gastric mucosa on which the object lens is just focused. The effective range of the distance between the lesion and the object lens is approximately 2 to 5cm, although the lesions near the pyloric ring and on the posterior wall of the upper portion of the corpus are not always satisfactorily measured because the distance is generally too long and too short respectively. The gauge is easy to photograph, so that the size of lesion in the stomach can be satisfactorily measured even on the developed picture. This device will be widely applicable.
