Analysis and diagnosis of steal spectrum in intracranial vertebral artery

Objective To analyze the relationship between the steal spectrum of intracranial vertebral artery and their diseased regions.Methods Steal spectrum in intracranial vertebral artery on TCD in 93 cases were found.Digital subtract angiography(DSA) or color doppler fiow imaging were performed to confirm their diseased regions.Results CDFI or DSA showed 88 cases with pathological changes of different extent of subclavian artery,of which 2 cases were complicated with slightly or moderate stenosis of the vertebral artery proximal part;and the other 5 cases with severe stenosis or occlusion of the vertebral artery proximal part.Conclusion Steal spectrums of intracranial vertebral artery were not only found in the subclavian steal syndrome,but also were found in the vertebral artery proximal part with severe stenosis or occlusion.When the steal spectrum of intracranial vertebral artery appears,not only the type of steal spectrum,but also the CDFI and DSA were necessary for diagnosis. Vertebral artery.TCD.Subclavian steal syndrome.Color doppler fiow imaging