1. A system for identifying an acute haematoma in non-contrasted computed tomography image data, the system comprising a computer programmed to: perform a first analysis of gray values of non-contrasted computer tomography image data, the first analysis comprising region growing and thresholding; extract a candidate region suspected to be the acute haematoma, based on the first analysis of the gray values; perform a second analysis of spatial features of the candidate region, including a size of the candidate region, a shape of the candidate region, and a connectedness of the candidate region to a skull; and classify, via a distance-based histogram of a mean gray value of the candidate region, the candidate region as a positive or negative acute haematoma, based on the analysis of spatial features.