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Left image, 4D-CTA color-mapping in a patient with a small dural AVF located at the left anterior skull base. Middle image, 3D rendering of color-mapping. Right image, conventional angiography. Early contrast bolus arrival of the AVF is seen as a prominent red (arrow). The ophthalmic artery with ethmoidal branches serving as the arterial feeder and arterialization of a tortuous cortical draining vein are clearly seen.
