中文摘要：

医院作为公共服务设施的一个重要组成部分，为居民提供了必不可少的医疗机会，其空间分布以及可达性的优劣，直接影响到居民能接触到医院的机会和方便程度。把可达性的概念引入到医院规划中，利用Mapiafo公司的控件MapX和Borland公司的可视化编程语言Delphi，开发了基于时间最短的路径选择信息系统，生成了医院可达性的等时线图和医院服务范围图，通过该系统可直观的看到区域内任何一点到达同一级医院所花费的最短时间以及通过的路径。以江苏省仪征市的医院为例，运用该系统对医院的可达性进行了评价，并提出了医院的规划方案。

英文摘要：

Hospital is one of the important elements in public utilities. It provides necessary medical treatment chances to residents. Its spatial distribution and accessibility will affect chance and convenience that resident can get to hospital. Accessibility analysis can be used in different periods of choosing location planning of hospital. Firstly, we should evaluate present infrastructural facilities in order to decide which facilities should be relocated or closed. Secondly, when we choose location for new facilities, accessibility analysis will help policymaker choose a suitable position. Therefore, this paper takes concept of accessibility into hospital planning. Using MapX and Delphi, the authors develop information system by which the route can be choosed based on the shortest time and generate the point value diffusion maps, isograms and service converge maps of hospital accessibility. Through this way, we can know the time and route that any point in region get to hospital. Based on land traffic network, this paper evaluates accessibility of hospitals in Yizheng city. Some conclusions are drawn as follows. The shortest time to get to the first grade hospital is less than 30 minutes. The most accessible regions are distributed mainly over eleven townships whose accessibilities are less than 12 minutes. The worst accessible regions are distributed mainly over in Hexiang village, Zhuqiao village, Qianke village and Shuangjian village whose accessibilities are between 12 minutes and 30 minutes. The service scopes of 21 first grade hospitals are tally with their administrative areas. The capabilities of Dayi village hospital, Liuji village hospital and Maji village hospital have not met present population＇s demands, Zhenzhou village hospital, the second people hospital of Yizheng city and Xupu hospital in Zhenzhou village have the same problem. Other 10 hospitals have a surplus capability. The shortest time to get to the second grade hospital is less than 67 minutes. The distribution of accessibility presents c