Figure 3

Angiography and embolization. The arrowhead shows the tip of the microcatheter. (A) Left ICA angiography (LAO angle = 80°). (B) The left ACA and MCA bifurcation was selectively embolized by one zirconia ball (LAO angle = 80°). The PCA was better visualized than before embolization. (C) Right CCA angiography (LAO angle = 0°). The left ACA retrograde flow is maintained through the right ACA. (D) The left PCA was accidentally failure embolized by one zirconia ball (LAO angle = 80°). ACA anterior cerebral artery, ICA internal carotid artery, LAO left anterior oblique, MCA middle cerebral artery, PCA posterior cerebral artery.