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A 54-year-old female presented with acute subdural hematoma secondary to rupture of an intracranial aneurysm. She was admitted with acute onset of severe headache, nausea, and vomiting. There was no past history of head trauma. Computed tomography demonstrated a left subdural hematoma with extension along the tentorium in the absence of subarachnoid or(More)
The approach used to implement mechanical impedance can be generally separated into the following two types: an impedance control system and an admittance control system. When an impedance control system reproduces a hard environment, large vibrations are generated. In contrast, an admittance control system is excellent at reproducing a high-stiffness(More)
A 71-year-old female presented with posttraumatic occlusion of the anterior cerebral artery (ACA) after a road accident in which she was hit in the mid-frontal region. Initial computed tomography (CT) demonstrated frontal skull fractures and pneumocephalus. High density areas were also identified in the right basal cisterns, suggesting traumatic(More)
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