[Angioscintigraphy of the aortic arch and the origin of the cerebral vessels in cerebro-vascular diseases (author's transl)].

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.