Article Figures & Data
Figures
- fig 1.
Cranial CT and MR imaging performed at presentation and 3 months.
A and B, Initial cranial CT scan shows a lobulated, calcified, 1.5-cm lesion in the central region with surrounding hypoattenuating white matter.
C and D, In axial T2-weighted images (4800/85 TR/TE), the lesion shows a hypointense signal because of calcifications, while the white matter changes appear hyperintense.
E, Sagittal reconstruction of T1-weighted fast low-angle shot 3D images (16.1/7 TR/TE) 20 minutes after chelated gadolinium injection reveals a slight contrast enhancement at the AVM nidus.
F, Three months later, one of the main draining veins appears hyperintense in this nonenhanced T1-weighted images, probably because of thrombus.
- fig 2.
Digital subtraction angiograms of the right interior cerebral artery. Lateral views (A, B) and anteroposterior views (C, D) in early arterial and late parenchymal phases show the high-flow central AVM, with two main feeders from the middle cerebral artery and venous drainage via superficial cortical veins into the superior sagittal sinus
- fig 3.
Follow-up digital subtraction angiograms of the right interior cerebral artery. Lateral views (A, B) and anteroposterior views (C, D) 4 months later fail to show the AVM nidus. Note the normal lumens of the former feeders
Tables
Patients with spontaneous, complete obliteration of an AVM without initial hemorrhage
