Diagnosis of chronic subdural haematoma: the advantages of MR imaging compared with the CT-scan.

Two cases of chronic subdural haematoma are reported. Both highlight the difficulties associated with the diagnosis of such collections in the isodense phase on Computed Tomography. Magnetic Resonance Imaging proved its higher discriminating power by delineating the haematomas in both cases. The respective values of these two imaging techniques are discussed with a review of the current literature.