1. A system ( 100 ) for identifying an acute haematoma in non-contrasted CT image data, the system comprising: an extraction unit ( 110 ) for extracting a candidate region suspected to be the acute haematoma, based on a first analysis of gray values of the image data; and a classification unit ( 120 ) for classifying the candidate region as a positive or negative acute haematoma, based on a second analysis of spatial features of the candidate region.