Williams, M A Duplex scanning evaluation of internal carotid stenosis. Improved detection of early lesions. [electronic resource] - Panminerva medica - 49-54 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0031-0808 Subjects--Topical Terms: Arteriosclerosis--diagnostic imagingCarotid Artery, Internal--diagnostic imagingCarotid Stenosis--diagnostic imagingEvaluation Studies as TopicHumansRadiographySensitivity and SpecificityUltrasonography