Table 2.

Microangiogram: cerebral arterial flow patterns

Vessel injected	Territory visualized	Reliability
ICA	MCA (ipsilateral)	+ + +
	ACA (ipsilateral)	+
Basilar artery	SCA (bilateral)	+ + +
	PCA (bilaterally)	+ + +
	PCoA (bilaterally)	+ + +
	MCA (bilaterally)	+ +
	ACA (bilaterally)	+
PCoA	PCA (ipsilateral)	+ + +
	MCA (ipsilateral)	+ + +
	ACA (ipsilateral)	+ +
	ACA (contralateral)†	+
PCA (superselective)	PCA (ipsilateral)	+ + + +
	PCoA (ipsilateral)*	+
	MCA (ipsilateral)*	+

ICA, internal carotid artery; MCA, middle cerebral artery; ACA, anterior cerebral artery; SCA, superior cerebellar artery; PCA, posterior cerebral artery; PCoA, posterior communicating artery.

^*Reflux;

^†Circle of Willis crossflow.