
Keywords: آنژیوگرافی توموگرافی کامپیوتری سه بعدی; Bow hunter's syndrome; Cervical spondylosis; Downbeat nystagmus; Nondominant vertebral artery; Rotational vertebral artery occlusion; 3D-CTA; Three-dimensional computed tomography angiography; BHS; Bow hunter's syndrome; DBN; Downbeat nystagmus; MRA; Magn