Gamma-angioscintigraphy of the cerebral vessels starting from the aortic arch localises better the level of an eventual vascular lesion preventing a "false positive" aspect, possible by the usual technique as in the case reported. By starting the examination at the level of the aortic arch or by the use of a diverging collimator it is easy to decide of the necessity of an angiographic study, simple carotidography or angiography of the aortic arch and its branches.
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