由于引进高强度的近端光源,大大促进了已达高标准的内窥镜技术及器械。应用这种光源可以照亮到“段”甚至“亚段”的支气管,且在不需另加技术及装备的条件下可以照像或拍成电影以作记录。但在获得照明较佳的同时必须付出对比度差的代价,因为强光下看不到细微差异,特别在主支气管,其粘膜结节、化生、过度和不全角化,如果范围不甚广芝,则难以发现。为了提高对比度,作者采用不同颜色的滤 Due to the introduction of high-intensity proximal light source, has greatly promoted the endoscopic technology and equipment has reached a high standard. Application of this light source can be illuminated to the “section” or even “sub” bronchus, and without additional technical and equipment conditions can be photographed or made into a movie for recording. But in obtaining better lighting at the same time must pay the price of poor contrast, because the light can not see the subtle differences, especially in the main bronchus, the mucosal nodules, metaplasia, over and incomplete keratosis, if the range is not wide Hiroshi , It is hard to find. In order to improve the contrast, the author uses a different color filter