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3d reconstruction based on phantoms (circles in Panels a and d). TOF-MRA underestimates the volume compared to 3DRA. The TOF-MRA reconstruction of an ACOM aneurysm (Panel c) underestimates the size of the bleb compared to 3DRA (Panel b). In a PCOM aneurysm (Panels d-f), the aneurysm sac (arrows) is undersized on TOF-MRA (Panel f) compared to 3DRA reconstructions.
