|
Fig 2. Parieto-occipital AVM before and after treatment.
A and B, Left internal carotid artery (ICA) angiograms in frontal and lateral projections demonstrating a parieto-occipital high-flow AVM with multiple feeders and cortical veins draining to the superior sagittal sinus (pre-embolization).
C and D, Axial rCBFs illustrating the increased perfusion in the AVM nidus (arrow) as well as in the widespread distribution of the cortical draining veins before treatment.
E and F, Almost corresponding rCBFs made after 2 uneventful sessions of embolization. The images show a decrease in AVM nidus size and rCBF in the area of the previously enlarged and draining veins. The patient was then sent for subsequent radiation therapy.
|