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Research groups in the ENIGMA Stroke Recovery Working Group consortium collected 304 MRI images from 11 cohorts worldwide. Images consisted of T1-weighted anatomical MRIs of individuals after stroke. For each MRI, brain lesions were identified and masks were manually drawn on each individual brain in native space using MRIcron, an open-source tool for brain imaging visualization and defining volumes of interest. A minimum of one lesion mask was identified for each individual MRI. If additional, separate lesions were identified, they were traced as separate masks. A separate tracer performed quality control on each lesion mask. This included assessing the accuracy of the lesion segmentations, revising the lesion mask if needed, and categorizing the lesions to generate additional data such as lesion location. In addition, an expert neuroradiologist reviewed all lesions to provide additional qualitative descriptions of the type of stroke, vascular territory, and intensity of white matter disease. The data collection is provided in both native subject space and normalized to a standard template (the MNI-152 template).

ENIGMA卒中恢复工作组（ENIGMA Stroke Recovery Working Group）联盟的各研究团队，从全球11个队列中收集了304张磁共振成像（Magnetic Resonance Imaging，MRI）图像。所收录图像均为卒中后个体的T1加权解剖MRI图像。针对每一张MRI图像，研究人员采用开源脑成像可视化及感兴趣体积定义工具MRIcron，在个体脑的原生空间中手动勾勒脑损伤掩码；每例个体的MRI图像至少对应一个损伤掩码，若存在多个独立损伤，则分别为其绘制独立掩码。另有专职人员对每一份损伤掩码开展质量控制工作，具体包括评估损伤分割的准确性、按需修正损伤掩码，以及对损伤进行分类以生成损伤位置等附加数据。此外，一名专业神经放射学家对所有损伤进行复核，以补充提供卒中类型、血管供血区及白质病变程度的定性描述。本数据集同时提供原生受试者空间数据与标准化至标准模板（MNI-152模板）的数据。