摘要： 面向对象建模是困难的，虽然目前已提出了不少方法，但还存在不尽人意之处。设计模式是面向对象建模的一种辅助设计手段。它总结了面向对象设计的宝贵经验，使得在遇到相似场景时可以直接套用。把设计模式应用于PACS系统的对象建模中取得了较好的效果。

关键词: 设计模式, 面向对象建模, 医学影像存档与通信系统

Abstract: Object-oriented modeling is hard. Although some methods have been proposed to solve this problem, they had much to be desired. Design pattern is an assisting tool trying to solve this problem. It summarizes valuable experiences of past object-oriented designs, which provide us a sound base of reusable systems. Design pattern is employed in PACS and achieves good result.

中图分类号: 

• TP311.52