This study aims to evaluate brain injuries and brain edema with non-contact DCS-Speckle multi-parameter imager.

Brain injuries includes acute and chronic injuries located in cerebral hemispheres, cerebellum, and brain stem, while brain edema is increased intracellular or extracellular fluid in brain tissue. Early diagnosis is helpful to improve the cure rate and reduce sequelae. This study aims to evaluate brain injuries and brain edema with non-contact DCS-Speckle multi-parameter imager, so as to provide reference diagnostic criteria by image artificial intelligence analysis.

Inclusion Criteria:

• Patients who have had brain damage.
• Patients who have had brain edema.
• Healthy people who are interested in non-contact DCS-Speckle multi-parameter imaging

Exclusion Criteria:

• Patients who are in pregnancy or have plan to conception.
• Patients who have vertebra surgery or have plan to surgery.
• Patients who are inappropriate to join this trial judged by the radiologists or specialists.
• AIDS, Active Hepatitis, Tuberculosis, Syphilis
• Patients who regularly take anticoagulants, antiplatelet drugs

Adult individuals and infants of any gender. Brain damage patients were hired in Beijing Geriatric Hospital, and brain edema patients hired in Tianjin Huanhu Hospital.