CERTIFICATION/LICENSE/REGISTRATION - ARRT-BS Breast Sonography (ARRT-BS), ARRT-S Sonography (ARRT-S), Musculoskeletal Sonography (MSK), Reg Diag Med Sono-Abdomen (AB) (RDMS-AB), Reg Diag Med Sono-Breast (BR) (RDMS-BR), Reg Diag Med Sono-OB/GYN (OB) (RDMS-OB), Registered Vascular Sonographer (RVS), Registered Vascular Tech (RVT): Registered in one of the following: American Registry of Diagnostic Medical Sonographers ARDMS (OB/GYN) or (AB) or (BR) or (MSK) or (RVT) OR American Registry of Radiologic Technologists ARRT(S) or (BS) OR the Cardio Credentialing Intl. + Protects patients and team members by following safety, infection-control, drug, and radiation policies, protocols, and techniques.