Cerebrovascular disease is the leading cause of mortality and disability in China

and assessing the imaging diagnosis accurately

especially in patients with acute ischemic stroke（AIS）

is of great importance in formulating treatment program and improving prognosis.Neuroimaging has been developing rapidly in recent years

and new techniques have emerged to help clinicians in assessing the infarct size

evaluating the ischemic penumbra

and identifying responsible vessels in patients with AIS

these measures provide useful information for individualized clinical treatment.In this paper

we briefly summarized the new technologies and applications of computerized tomography（CT） and magnetic resonance imaging（MRI） in the diagnosis and treatment of cerebrovascular diseases

in order to provide reference for clinical imaging applications in cerebrovascular diseases.