6George B, Laurian C.The vertebral Artery:Pathology and surgery[M]. New York:Springer-verlag, 1987:119.
7Mitrasinovic A, Radak S, Kolar J, et al. Color Doppler sonographie evaluation of flow volume of the internal carotid and vertebral arter- ies after carotid endarterectomy[J].Clin Ultrasound, 2010, 38(5): 238-243.
8Chaturvedi S, Lukovits T, Chen W, et al.Ischemia in the territory of a hypoplastic vertebrobasilar system[J].Neurology,1999,52(2):980-983.
7Seo T, Tominaga S, Sakagami M. Relationship between neurological asymptomatic vertigo and the vertebrobasilar system as revealed by magnetic resonance angiography [ J ]. ORL J Otorhinolaryngol Relat Spec, 2000,62 (2) : 63 -67.
8Seidel E, Eicke BM, Tettenborn B, et al. Reference values for vertebral artery flow volume by duplex sonography in young and elderly adults [ J ]. Stroke, 1999,30 (12) :2692-2696.
9Majak J, Olszewski J, Milonski J, et al. Influence of positional blood flow disorders in the vertebral and basilar arteries on the prevalence of vertigo in patients with cervical spondylosis[ J]. Pal Merkur Lekarski ,2005,19( 11 ) : 398-399.
10Min JH, Lee YS. Transeranial Doppler uhrasonographic evaluation of vertebral artery hypoplasia and aplasia [ J ]. J Neurol Sci,2007,260(1/2) :183-187.