As the early stage of dementia, vascular cognitive impairment no dementia (VCI-ND) has become a hot research topic in recent years. The effective identification of VCI-ND has important clinical significance for prevention and decreasing of dementia. This article reviews the advances in research on neuropsychology, neuroimaging, biological markers, as well as the prevention and treatment of VCI-ND.

Objective To This article mainly takes the Shenzhen Baoan people's Hospital pre-hospital department as the observation object,analyses the spacial site data distribution of pre-hospital,to realize optimum allocation for pre-hospital resource.Methods By means of the intelligentized ambulance,the site data of the pre-hospital is obtainecd,so is the pre-hospital hot map.With the hot map,the special pre-hospital characteristics is researched.Results The three spatial data characteristics of pre-hospital medical are proposed,i.e.,non-uniform,relative stability,individual difference.Conclusions These three characteristics provide us with a new method and a new basis for decision making.In this paper,based on the pre-hospital characteristic,a modeling method of non-uniform relative stability model is proposed,and the optimized distribution of hospital site is discussed by applying planning mathematics.