These increasing data bring forward the new big challenge to the image processing area. Then the design and realization of the Pictures Archiving and Communication Systems (PACS) become the competitive choice in Hospital Information System, which can give the possibility of the sharing information among different medical departments.
医学图像归档及通信系统PACS(Pictures Archiving and Communication System)的建立已经成为医院信息化网络化建设的必然选择，它使得在医疗机构内部及医疗机构之间共享病人诊疗信息数据与影像信息成为可能。
The difference is that domestic MBO is the result of institutional transition, but the overseas MBO is the competitive choice, and in China the price difference in share transactions makes managers have the goal to acquire the profits.
PACS can save the cost of using traditional films for diagnosis, as well as improve the precision of medical imaging based diagnosis. So the design and realization of PACS has become the competitive choice in hospital information systems.