Inclusion Criteria1. Hospitalized patients with ischemic stroke that are diagnosed definitely;
2. Age ≥ 18 years;
3. Within 7 days after the onset of diseases;
4. Signed the consent informed form.
Exclusion Criteria1. Patients with noncerebrovascular diseases that are diagnosed definitely;
2. Silent cerebral infarction (CI) without symptoms and signs;
3. Those refuse to sign the consent informed form of the study.