Answer by
pinoot1976 (267)
There are various causes of vertigo and many other possible diseases mimicking symptoms like vertigo. In particular, insufficient blood supply to the brain may give rise to these symptoms; and a Carotid Sonogram is then applied to identify the presence of carotid artery stenosis or occlusion. Generally, however, vertigo is a result of vertebro-basilar insufficiency rather than carotid insufficiency.