Locked in syndrome
Tetraplegia, inability to speak, respiratory insufficiency which requires the use of mechanical ventilation; residual vertical eyes movement; intact cognitive functions.
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CT without contrast allows to value hypodensity as the result of a stroke of the brainstem.
CTA allows assessment of the cerebral vessels and in particularly the basilar artery.
CT without contrast shows stroke as hypodensity of the ventral brainstem.
CTA of the cerebral vessels allows appreciation of the thrombosis of the basilar artery. Reference ROI is set on the aortic arch, with bolus tracking and the scan starts automatically when il reaches an intensity of 100 HU.