This is a retrospective analysis of patients of the Bernese Stroke Data Base who all had a full MRI examination at admission. All acute stroke patients will be screened for Troponin elevations, abnormal electrocardiograms or both. Patients with primary cardiac causes or other reasons for troponin elevations or ECG changes will be handled separately. The study patients will be compared to at least 200 control stroke patients without troponin elevations and without ECG changes. Infarct location, vessel occlusions and volumes of diffusion restriction and perfusion deficit will be assessed on MR images. In a multivariable analysis, the investigators will find out whether Troponin elevations and ECG abnormalities are associated with infarct location or infarct size or both. In addition, the investigators will perform a voxel based analysis for correlation of infarct location and troponin elevations and ECG abnormalities.