Non-Significant Risk Study Comparing the Nautilus NeuroWaveTM to Transcranial Doppler as an Aid to Diagnosing Vasospasm

"The Nautilus NeuroWave device will be utilized on subjects with sub-arachnoid hemorrhage that undergo TCD measurements to diagnose Vasospasm. A recording will be obtained using the device each time a TCD measurement is made.~In this intervention, patients are recorded using the Nautilus Neurowave device."

Subjects with sub-arachnoid hemorrhage undergo TCD measurements to diagnose Vasospasm. Patients that were detected to have a vasospasm using TCD will also be classified as having mild, moderate and severe vasospasm.