Inclusion Criteria:  A. The patients were diagnosed with cerebral venous thrombosis or cerebral venous sinus thrombosis; B. The patients completed at least cranial CT or MRI examination upon admission;C. The patients complete at least one of the CTV, MRV or DSA examination.  Exclusion Criteria:  A. Patients with severe cardiopulmonary insufficiency;B. Patients lost to follow-up;C. Patients with incomplete access to imaging data;D. Patients with cerebral venous sinus thrombosis that was not diagnosed at discharge.