Identification of Venous Signal on Arterial Spin Labeling Improves Diagnosis of Dural Arteriovenous Fistulas and Small Arteriovenous Malformations

Supplemental Online Table and Figure

Files in this Data Supplement:

• Online Table and Figure (PDF) -
  
  Online Table: Demographic data of 15 patients with DAVFs and small AVMs
  
  Online Figure: One potential source of error is incorrect attribution of focal vascular ASL signal to veins rather than arteries. This patient had no vascular malformation and the ASL pattern (A�C) shown above is consistent with a severe borderzone sign. Arrows in the FLAIR images (D�F) confirm the arterial nature of the ASL signal. In such patients, it is not possible to visualize the brain parenchymal or venous ASL signal (if present), due to the extremely slow flow on the arterial side, without modifying the ASL sequence.