Article Figures & Data
Figures
- fig 1.
Case 5: Recanalization of feeders once obliterated during embolization. Only PVA particles were used in this case.
A, Before treatment, the left temporooccipital AVM is supplied by the angular (arrowhead) and temporooccipital (arrow) arteries on left internal carotid angiogram.
B, Both the angular and temporooccipital arteries are occluded during embolization, and the AVM disappears on angiogram obtained immediately after embolization.
C, The temporooccipital artery (arrow) recanalizes, and part of the AVM reappears on angiogram obtained 4 months after embolization.
- fig 2.
Case 19: Increase of blood supply from residual small feeders. Embolization was performed with PVA particles and platinum coils.
A, Before treatment, the right occipital AVM is supplied mainly by the parietooccipital artery on left vertebral angiogram.
B, The parietooccipital artery is occluded during embolization, and a small part of the AVM is fed by the calcarine and the posterior temporal (single arrowhead) arteries and by the meningeal branch of the vertebral artery (arrow) on angiogram obtained immediately after embolization. Double arrowheads indicate platinum coils in the parietooccipital artery.
C, Blood supply of the posterior temporal artery (single arrowhead) and meningeal branch of the vertebral artery (arrow) increases, and the residual AVM enlarges 3 months after embolization. Double arrowheads indicate platinum coils in the parietooccipital artery.
Tables
- TABLE 2:
Comparison of angiographic changes in nidi at 1 month or less with those at more than 1 month after embolization with PVA particles
- TABLE 3:
Angiographic changes in nidi after embolization with PVA particles and additional materials
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