头转动试验和TCD,MRA对椎动脉狭窄性眩晕临床对照研究

目的：研究头转动试验（转颈，屈颈及头后仰）与经颅多普勒（TCD）、磁共振血管成像（MRA）对椎动脉（VA）狭窄性眩晕的临床诊断价值及相互关系。同时对VA狭窄性眩晕的临床症状进行分析。方法：100例VA狭窄性眩晕病人，经头转动、屈颈和头后仰试验与TCD和MRA检查进行比较。同时进行排除非VA狭窄所致眩晕的其他疾病的相关检查。结果：经头转动试验可诱发病人眩晕症状者78例。其中44例屈颈及仰头试验也出现眩晕。TCD检查双侧VA血流不对称73例。MRA检查双侧椎动脉不对称95例，另有5例为双侧椎动脉狭窄。结论：头转动试验对VA狭窄性眩晕诊断具有重要的临床诊断价值，TCD诊断VA狭窄准确率相对较高。MRA对确定VA狭窄诊断价值最高。

COMPARISON OF NECK ROLLING-FLEXION AND HEAD HYPSOKINESIS TEST WITH TCD AND MRA IN VERTIGO CAUSED BY VERTEBRAL ARTERY STENOSIS

Objective:To appraise diagnostic value of vertigo with vertebral artery stenosis by neck rolling-flexion test,transcranial Doppler(TCD) and magnetic resonance angiography(MRA) examination.Methods:100 patients with vertigo whose symptoms were induced by neck rolling-flexion and head hypsokinesis test were given later examination of TCD and MRA.Results:100 patients with vertigo whose symptoms were induced by neck rolling-flexion and shead hypsokinesis test were chosen.Vertigo occurred after left-right neck rolling in 78 cases.73 cases were found dissymmetry of blood flow in vertebral arteries on two sides by examination of TCD.95 cases were found dissymmetry in inner diameter of vertebral arteries by examination of MRA.The other 5 cases were detected both sides of vertebral artery stenosis.Conclusion:Neck rolling-flexion and head hypsokinesis test can induce vertigo symptom,which helps to give final diagnosis whether it is caused by vertebral artery stenosis.TCD examination has a relatively higher accuracy in diagnosis of vertebral artery stenosis.MRA examination has the highest accuracy in diagnosis of vertebral artery stenosis.