Required Licensure, Certifications, Registrations: Certification by the American Registry of Diagnostic Medical Sonographers as a Registered Vascular Technologist (ARDMS RVT) or by Cardiovascular Credentialing International as a Registered Vascular Specialist (CCI RVS) is required prior to being hired. Job Description/Summary: The Echovascular Sonographer II performs echo vascular studies as required, including Echocardiograms, Cardiac Doppler studies, Color flow mapping, TEE studies, Carotid Duplex studies, Arterial extremity testing, Venous extremity studies and RAA"s.