PMC9610459_01
(a and b) Magnetic resonance images showing extensive thrombus (arrows) in sigmoid sinus, superior sagittal sinus, and right cortical vein. (c) Fluid-attenuated inversion recovery (FLAIR) image on admission. (d) FLAIR image on neurological deterioration.
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F1
T2*-weighted images revealed an extensive thrombus affecting the superior sagittal sinus (SSS) to the right sigmoid sinus (SS) [Figures 1a and b]. Fluid-attenuated inversion recovery images revealed a new venous infarction in the right frontal lobe [Figures 1c and d].
(a) Preinterventional angiograms. No apparent dural arteriovenous fistulas were detected, but the anterior falcine artery was slightly obvious (arrow). (b and c) Arrows indicate extensive thrombus in the sinuses. (d) Partial recanalization of dural sinuses was obtained (arrow).
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F2
No dAVF was detected [Figures 2a-c]. Final angiography showed partial recanalization of the SSS and transverse sinus (TS) with a residual thrombus [Figure 2d].
(a) Computed tomograms showing left frontal lobar hemorrhage 1 cm in diameter. (b) T2*-weighted images revealed a new thrombus in the left cortical vein.
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F3
T2*-weighted images revealed a thrombus in the focal cortical vein near the hematoma [Figure 3].
(a and b) Left internal and external carotid angiograms showed high-grade dural arteriovenous fistulas directly draining into the left cortical vein (arrows). (c and d) The shunt was completely occluded. Arrows indicate Onyx cast.
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F4
Type III and Cognard Type III [Figures 4a and b]. Transarterial embolization with Onyx was performed with complete obliteration without a shunt [Figures 4c and d].