Satava R M
Gastrointest Endosc. 1987 Apr;33(2):69-72. doi: 10.1016/s0016-5107(87)71511-9.
The advent of microchip video cameras has opened another technology to endoscopy of the gastrointestinal tract: video endoscopy. With direct video endoscopy, the microchip camera is mounted on the distal tip of the endoscope; with indirect video endoscopy, a miniature camera is coupled to the eyepiece of a standard fiberoptic endoscope. Both systems view the procedure on a monitor. The systems were "bench" tested in an electronics laboratory to objectively compare resolution, brightness (luminosity), and color intensity (chroma). Clinical comparison was performed in 619 patients. Both video endoscopy systems provided significant advantages over fiberoptic endoscopes in therapeutic procedures, teaching, and documentation. The direct video system provided the best overall video image; the indirect system had a slightly diminished resolution and luminosity in both the "bench" test and clinical evaluation.
视频内窥镜检查。在直接视频内窥镜检查中，微芯片摄像机安装在内窥镜的远端；在间接视频内窥镜检查中，一个微型摄像机与标准纤维光学内窥镜的目镜相连。两种系统都在监视器上观看操作过程。这些系统在电子实验室进行了“台架”测试，以客观地比较分辨率、亮度（光度）和色彩强度（色度）。对619例患者进行了临床比较。在治疗程序、教学和记录方面，两种视频内窥镜检查系统都比纤维光学内窥镜具有显著优势。直接视频系统提供了最佳的整体视频图像；间接系统在“台架”测试和临床评估中分辨率和亮度都略有降低。
