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对４０例椎基动脉供血不足（ＶＢＩ）病例，随机选取２０例行单光子发射计算机断层扫描（ＳＰＥＣＴ）检查，２０例行ＭＲＩ检查，并以２０例健康人作对照，结果表明：ＳＰＥＣＴ可作为诊断ＶＢＩ的客观依据，远较ＭＲＩ灵敏。及早检查有助于估计预后，指导治疗。
40 cases of VBI were randomly selected, 20 cases were examined by single photon emission computed tomography (SPECT), 20 cases were examined by MRI, and 20 healthy people as control. The results showed that SPECT could be used as Visual evidence of VBI is far more sensitive than MRI. Early examination helps to estimate the prognosis and guide the treatment.