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目的 探讨椎基底动脉供血不足 (VBI)的客观可靠的辅助诊断方法。方法 对临床确诊 VBI患者40例 ,进行 SPECT、颈部血管彩超、TCD检查 ,并对 SPECT结果正常的部分患者进行了乙酰唑胺 (Diamox)介入SPECT检查 ,对 2 6例患者进行颅脑 MRA检查。结果 VBI患者普通 SPECT阳性率为 5 2 .5 % ,Diamox介入SPECT后阳性率提高至 79.4% ,TCD阳性率为 6 2 .5 % ,CDFI阳性率为 42 .5 % ,MRA阳性率为 7.6 9%。结论 TCD、颈部血管彩超可作为简单筛选 VBI的检查手段 ,MRA可能对 VBI诊断帮助不大 ,SPECT及 Diam ox介入SPECT可能是目前 VBI诊断较实用的客观可靠的检查手段 ,值得临床推广
Objective To investigate the objective and reliable auxiliary diagnosis of vertebrobasilar insufficiency (VBI). Methods Forty patients with clinically diagnosed VBI were examined by SPECT, color Doppler ultrasound and TCD. The patients with normal SPECT were subjected to Diamox interventional SPECT. MRA was performed on 26 patients . Results The positive rate of common SPECT in VBI patients was 52.5%, the positive rate of SPECT in Diamox was 79.4%, the positive rate of TCD was 62.5%, the positive rate of CDFI was 42.5% and the positive rate of MRA was 7.69 %. Conclusions TCD and cervical vascular ultrasonography can be used as a simple screening method for VBI. MRA may not be helpful for the diagnosis of VBI. SPECT and Diam ox interventional SPECT may be the objective and reliable method for the diagnosis of VBI, which is worthy of clinical promotion