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  • P A Schneider, E B Ringelstein, +4 authors E F Bernstein
  • 1988
Before surgery, we evaluated major intracranial collateral pathways using transcranial Doppler ultrasonography (TCD) in 50 patients who then underwent carotid endarterectomy with concurrent multimodality cerebral monitoring. Patients were grouped with respect to collateral pathways demonstrated preoperatively by TCD: Group 1, good collateralization with an(More)
Neurologic deficits that occur simultaneously with or subsequent to internal carotid artery occlusion may be influenced by the adequacy of the intracerebral collateral circulation. Transcranial Doppler ultrasonography was used to evaluate mean middle cerebral artery blood velocity and blood flow in major collateral arteries in 78 patients, including 39(More)
Virtual reality has been used to bring people into isolated environments that either mimic the real world or abstract worlds. This game demo presents SonicWalker, a virtual reality based city that places the participant into the environment of a person who is blind. The participant is required to navigate city streets without using any vision-relying only(More)
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