In order to promote a high-effeciency and convenient platform for Cerebral Aneurysm study,an essential part of which ,the cloud database ,has been found to collect clinical data of Cerebral Aneurysm patients. This conceive of great significance has been ratified by Tianjin Medical University General Hospital Medical Ethnic Committee.Collecting clinical data of Cerebral Aneurysm patients will be undertaken actively,carefully,and scientifically on the basic principles of the Helsinki Declaration and of relevant laws and regulation in China.Website copyright of CMAD is owed by the Tianjin Medical University General Hospital and Tianjin neurological institute(TNI).The data of CMAD are shared by all participation institution according to the relevant documents of CMAD.Welcome to join us!