In this paper, charactoristics in image archiving is analyzed, and a grade-archiving machanism is introduced.Furthermore,the advantages and shortcomings of three resolve schemes are compared.

• 本文分析了PACS系统影像存储的特点,介绍了分级存储机制实现对医学影像的存储管理,并比较了三种在线存储设备解决方案的优点和缺点。