This study is for patients with brain injuries at certain hospitals. It uses a special machine called a Transcranial Doppler (TCD) to check how blood moves in the brain. This is safe and doesn't hurt. The study will collect information from patients with conditions like brain injury, bleeding in the brain, liver failure, or stroke. The goal is to gather data to help create new tools for checking brain health in the future.
- The study is observational, meaning no new treatments will be given.
- Each session lasts up to 60 minutes.
- Participants must be 18 or older and have a device to measure brain pressure.