'''[[CT angiography of the head]]''' for '''[[stroke]]''':
==Evaluation==
In addition to a '''[[CT_of_the_head#Basic_screeningCT angiography of the head|basic screening of a CT angiography of the head CT]]''', evaluate:
*Thick slices of major vessel of the cerebrum and cerebellum for contrast defects.
*Thin slices of at least the carotids as they pass through the skull, for focal occlusion or stenosis.