Fig. 1
The imaging results of the dural arteriovenous fistula and the spinal dural arteriovenous fistula. A Computed tomographic angiography examination of the head shows a space-occupying venous bulb at the frontal base. B The axial computed tomographic angiography displays the bottom enhancement of the forehead. C Vermiform vascular shadows can be seen in the lower thoracic spinal cord. D Digital substraction angiography indicates a thick tortuous upward draining vein