Cerebral Dural Arteriovenous Fistulas: Detection by Dynamic MR Projection Angiography

Digital subtraction angiography (DSA) is the method of choice for detection of cerebral dural arteriovenous fistulas. A recently introduced contrast-enhanced two-dimensional dynamic MR angiographic technique allows projection images similar to those obtained by radiographic DSA to be acquired at a sub-second frame rate with a high in-plane resolution [1, 2]. We applied minimally invasive MR projection angiography to three patients with dural arteriovenous fistulas and compared the results with findings from DSA and with findings from MR imaging and time-of-flight angiography