Tan X, et al. - Study authors attempted to investigate the mechanism of crossed aphasia (CA) following cerebral infarction in a right-handed patient with atypical cerebral language dominance. A case of CA after right hemispheric stroke in a right-handed patient with atypical language dominance was described and tried to investigate the mechanism of CA based on functional imaging methods, including arterial spin labeling (ASL) and positron emission tomography/magnetic resonance imaging (PET-MRI). They reported that the patient has right-sided cerebral language dominance, or that both hemispheres have linguistic functions. Not all patients showed linguistic capabilities on the side opposite hand preference. By a combination of clinical manifestations and functional imaging techniques, the language dominance should be predicted.