Non-contrast CT head
Small chronic infarct in the right frontal superior gyrus.
CTA head and neck
Hypoplastic left vertebral artery (LVA), disappearing at the level of the C4 vertebra. The intracranial segment (V4) is seen as a continuation of a prominent branch of the left external carotid artery (LECA), together comprising a proatlantal artery.
The rest of the neck and brain arteries are patent and of normal appearance and caliber.