The hospital shall have the ability 24 hours a day, within 20 minutes of the patient’s arrival, to complete: All of the following: Brain computed tomography; CT Angiography; and CT Perfusion; or Magnetic resonance imaging. The hospital shall have the ability 24 hours a day to have the neuroimages referred to in this regulation interpreted within 20 minutes of their completion by a physician experienced in interpreting computed tomographic studies. The hospital shall have the ability 24 hours a day to have the neuroimages referred to in this regulation interpreted within 30 minutes of their completion by a physician experienced in interpreting: CT angiography; CT Perfussion; and Magnetic resonance imaging studies. The hospital shall: Have the ability to upload emergent imaging scans into CRISP (Chesapeake Regional Information System for our Patients), which will facilitate sharing of emergent imaging with the receiving center; and Have the imaging ability to rapidly identify core (nonviable) infarct versus (potentially salvageable) penumbra.