Peroral cholangioscopy in the new millennium

Peroral cholangioscopy was first described in 1970s and has recently gained popularity.Peroral cholangioscopy is appealing to therapeutic endoscopists because a direct intraluminal view of the biliary duct system offers possibilities for diagnosis and interventions beyond that which other imaging or endoscopic modalities can provide.As the image quality of cholangioscopies improves,so too does their diagnostic capability,and as their durability and maneuverability increases,so too does their potential use for therapeutic applications.This editorial is intended to provide a brief review of recent developments in peroral cholangioscopy and current indications for its use.

图像信息需求研究综述

根据图像信息需求的层次化特点,从研究对象、内容、方法及相关理论角度对国内外相关研究工作进行梳理,归纳出图像信息需求的研究框架;侧重分析基于用户调查方法开展的专业性、日常性图像信息需求研究情况以及相关研究项目;同时也重点分析采用日志分析方法对专题图库、搜索引擎和在线论坛的用户提问与请求进行图像信息需求研究的进展;最后,从研究内容、方法上进行总结,并展望下一步研究方向。