Table 2.

Mechanism and location of stroke, and patency of large vessel. (R: right; L: left; PCA: posterior cerebral artery; MCA: middle cerebral artery; SCA, superior cerebellar artery; ICA: internal carotid artery; BA, basilar artery; VA, vertebral artery).

Subject	Mechanism	Location	Patency of large vessels
1	Large Vessel	R Frontal Lobe	100% narrowing of R MCA a
2	Small Vessel	L Pontomedullary	100% narrowing of R VA and R MCA a
3	Large Vessel	R PCA	100% narrowing of L VA and BA a
4	Cryptogenic	R MCA	No significant narrowing b, c
5	Cryptogenic	R Cerebellar, R SCA	No significant narrowing a
6	Large Vessel	L Centrum Semiovale	99% narrowing of L ICA b, c, e
7	Cardioembolic	L Occipital	No significant narrowing b, c
8	Cardioembolic	R PCA	No significant narrowing b, c
9	Cardioembolic	L Thalamus and Selenium	No significant narrowing a, b, d
10	Cardioembolic	R Temporal, Occipital and Parietal Lobes	No significant narrowing a, b
11	Cardioembolic	R Basal Ganglion	100% narrowing of R M1 segment a, f
12	Cryptogenic	R SCA	No significant narrowing a

^aConventional angiogram

^bMagnetic resonance angiogram of the head/neck

^cCarotid ultrasonography

^dComputed tomography angiography of the head/neck

^eVessel was recanalized by endarterectomy

^fVessel was recanalized by mechanical thrombectomy