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Insights into Imaging
Fig. 19 | Insights into Imaging

Fig. 19

From: Location, length, and enhancement: systematic approach to differentiating intramedullary spinal cord lesions

Fig. 19

Dural arteriovenous fistula. A 72-year-old male with progressive lower extremity weakness, without improvement in symptoms after lumbar laminectomy. a Axial T2 image demonstrates numerous flow voids in the thecal sac (arrowhead). There is high signal in the cord due to congestion (arrow). b There is long-segment high T2 signal in the cord, with serpiginous vessels in the posterior thecal sac (bracket). c Spinal angiogram shows the right T4–T5 supreme intercostal artery as a feeding vessel. d MRA confirms the arteriovenous connection

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