Yamaguchi M, Okazaki Y, Yanai H, Takemoto T
First Department of Internal Medicine, Yamaguchi University, Ube, Japan.
Endoscopy. 1988 Sep;20(5):263-6. doi: 10.1055/s-2007-1018189.
We have developed a new endoscopic system for measuring the three-dimensional structure of the gastric ulcer. The system consists of an argon ion laser generator, a side-viewing endoscope with diffraction grating made of glass fibers, and a graphic processing unit. Via a fiber grating fitted in the tip of the endoscope, about 1600 light spots produced by the diffracted laser beam were projected on to the gastric mucosa. By graphic processing involving the detection of the deviation of the laser spot array on the gastric lesion, the diameter, area, and height or depth of the lesion could be determined. To evaluate the accuracy of the system, the diameter and area of a rubber disc were determined in vitro and in the stomach. A cubic model 10 mm in height was used to evaluate the accuracy of the system in measuring height. Accuracy proved to be satisfactory for clinical use. The course of healing of 6 gastric ulcers treated by histamine receptor antagonist was followed with the system. A linear decrease in diameter and depth of the ulcer was observed.
我们开发了一种用于测量胃溃疡三维结构的新型内窥镜系统。该系统由一个氩离子激光发生器、一个带有由玻璃纤维制成的衍射光栅的侧视内窥镜和一个图形处理单元组成。通过安装在内窥镜尖端的光纤光栅，由衍射激光束产生的约1600个光斑投射到胃黏膜上。通过涉及检测胃病变上激光光斑阵列偏差的图形处理，可以确定病变的直径、面积以及高度或深度。为了评估该系统的准确性，在体外和胃内测定了橡胶盘的直径和面积。使用一个高度为10毫米的立方体模型来评估该系统测量高度的准确性。事实证明，其准确性对于临床应用来说是令人满意的。使用该系统对6例接受组胺受体拮抗剂治疗的胃溃疡的愈合过程进行了跟踪。观察到溃疡的直径和深度呈线性下降。
