|
Fig 2. Transcranial ultrasound angiography (tUSA). tUSA image of the circle of Willis and its branches after UCA injection. M1, M2, and M3, middle cerebral artery segments; A1 and A2, anterior cerebral artery segments; P1, P2, and P3, posterior cerebral artery segments; BS, brain stem; top of BA, hyperechogenic distal part of the basilar artery.
|