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Figure 1: T2-weighted coronal, (a) three-dimensional time of flight (3DTOF) arterial magnetic resonance (MR) image and (b) 3DTOF venous MR imaging (c and d) about 3 × 3 cm size flow void in left fronto-parietal lobe suggestive of venous aneurysm, which is fed by single arterial feeder from left middle cerebral artery and drained by two predominant dilated venous channels to superior sagittal sinus

Figure 1: T2-weighted coronal, (a) three-dimensional time of flight (3DTOF) arterial magnetic resonance (MR) image and (b) 3DTOF venous MR imaging (c and d) about 3 × 3 cm size flow void in left fronto-parietal lobe suggestive of venous aneurysm, which is fed by single arterial feeder from left middle cerebral artery and drained by two predominant dilated venous channels to superior sagittal sinus