Lesions on diffusion-weighted imaging (DWI) occasionally appear on follow-up magnetic resonance imaging (MRI) among initially DWI-negative but clinically suspicious stroke patients. We established the prevalence of positive conversion in DWI-negative stroke and determined the clinical factors associated with it.

中文翻译：

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最初为病变阴性中风患者的弥散加权成像延迟病变。

在最初的DWI阴性但临床可疑的中风患者中，扩散加权成像（DWI）上的病变偶尔会出现在后续的磁共振成像（MRI）上。我们确定了DWI阴性中风的阳性转化率，并确定了与之相关的临床因素。