由于存在缺血半暗带的患者更有可能从治疗中获益，因此识别这些患者至关重要。

The identification of these patients is of importance because the patients with ischemic penumbra are more like ly to benefit from the treatment.

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对存在缺血半暗带患者给予动脉溶栓治疗，并分别于溶栓前、溶栓后即刻、溶栓后3周和3个月进行NIHSS评分，以评估近期及远期疗效。

Where ischemic penumbra existed, the intra-arterial thrombolysis was administered. It was assessed by NIHSS score before and after thrombolytic therapy at the 3rd week and the 3rd month.

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