Subtraction angiography is an invasive diagnostic method, which for a long time was a gold standard in carotid artery and intra-cranial vessel imaging. The aim of this research is to evaluate angiographic imaging in predicting atherosclerotic plaque type VI by AHA morphology and to assess its significance in establishing patients' suitability for a particular operative method. Secondarily, we assessed atherosclerotic lesions in common carotid artery bifurcation. In the paper we analyzed 158 bilateral angiograms of common and internal carotid arteries in extra- and intra-cranial locations. The material consisted of patients hospitalized in the Vascular Surgery Ward of Memorial Copernicus Hospital in Lodz during 2002-2004 who underwent angiography. We concluded that: 1. In symptomatic patients irregular plaque images in subtraction angiography is correlated with plaque type VI by AHA morphology. 2. Angiography is not a sufficient method for selection of the appropriate operative treatment due to its low sensitivity and specificity in plaque morphology imaging. 3. Plaque type VI by AHA is characteristic even for the second group of carotid bifurcation stenosis (by NASCET) and it definitely dominates in group III (by NASCET).