What is the flow direction of the right superficial temporal artery distal to the fistula point?
Retrograde flow of the right superficial temporal artery distal to the fistula point!
Right sided arteriovenous fistula of the scalp (extracranial fistula) between the parietal branch of the superficial temporal artery and the superficial temporal vein.
There is contribution to the fistula via arteries of the ipsilateral occipital and auricular arteries and the contralateral external carotid artery.
Unremarkable intracranial circulation. There is no intracranial fistula.