- 期刊
電子內視鏡(Welch-Allyn VideoEndoscope System)的使用經驗
Preliminary Clinical Experience with Welch Allyn Videoendoscope
摘要
自1958年Hirschowitz利用光纖維(Fiberoptic bundle)發現光纖維鏡以來，消化道內視鏡檢查及治療皆以光纖維鏡為主流。1983年美國Welch-Allyn (1)公司開發與傳統的光纖維內視鏡完全不同系統的影像傳達電子內視鏡，號稱第三代內視鏡。電於內視鏡先端部藏有所謂小型電子攝影機，CCD(Charge Coupled Device)觀察鏡頭及感應器裝置，將感受的影像轉變為電氣信號，經過顯像處理器處理後，影像顯現法監視器的電視熒光幕上。沒有接目鏡，因此所有內視鏡檢查步驟皆依靠熒光幕的影像進行。臺中仁愛醫院自1985年7月下旬至1986年5月中旬為止實行1,648例上消化道疾病检查，就內視鏡揷入性，操作性，解像度，觀察能及記錄性，逐項檢討提出報告。
並列摘要
We had initially clinical experienced with phototype Welch Allyn VideoEndoscope (WAVE system) in Taiwan, VideoEndoscope has no conventional fiber optic bundle for images, but it is equipped with charge coupled device (CCP) chip attached to the distal tip of the scope. This newly developed WAVE system (1983) is composed of videoendoscope, video-processor, television monitor, character generator keyboard and video tape recorder (VTR). The endoscopy is performed by referring to the television monitor and thus many individuals can follow and contemplate simultaneously. We have performed 1648 cases of VideoEndoscopy on the upper G-I tract during the period from July 1985 to May 1986 at the Taichung Jen-Ai Hospital. TV images of the VideoEndoscope are superior to the conventional one both in resolution and color. This is due to the fact that the VideoEndoscope can handle fourty thousands constituents of the image in contrast to fiberscope which can only handle thirty thousands. Detective points of the VideoEndoscope, the front-view scope, can be further improved since it is less flexible and more difficult to manipulate than fiberscope. Furthermore, it takes pictures by polaroid. In the future, lesions in upper and lower G-I tract will be analyzed objectively with computer and spectrophotometer which are capable of analyzing images. TV endoscope, though its operating activity and the recording system remain to be improved, does have a great potential in clinical applications such as in the computor analysis of the endoscopic images and in the development of the new recording system by using video disc.