The authors analysed control ultrasonographic examination of the carotid arteries based on Doppler's phenomenon at least six months after ischaemic stroke in 40 patients of the Department of Neurology, Medical Academy in Wrocław. The examination was done using a Polish UDP-20 flowmeter. In more than one half of the patients (57.5%) the carotid blood flow was worsened. The predominating risk factor in the group with worsening was abnormal serum lipid pattern (hyperlipidaemia and/or low HDL values). In this group also more frequent presence of two or more risk factors was observed (69.9%). The usefulness was demonstrated of monitoring of the conditions of the carotid arteries in patients after ischaemic stroke using this method.