脑白质高信号是一种常见的脑小血管病影像学表型。许多缺血性卒中患者会合并脑白质高信号。严重脑白质高信号可增高急性缺血性卒中患者静脉溶栓治疗后出血性转化风险，对患者转归造成不利影响，需引起临床医生的注意。“,”White matter hyperintensity (WMH) is a common imaging phenotype of cerebral small vessel disease. Many patients with ischemic stroke also have WMH. Severe WMH can increase the risk of hemorrhagic transformation after intravenous thrombolytic therapy in patients with acute ischemic stroke, and adversely affect the outcome of patients, which requires the attention of clinicians.