Minimum Qualifications: Associate''s Degree (Required)ARDMS - American Registry for Diagnostic Medical Sonography Certification - American Registry for Diagnostic Medical Sonography, ARRT - American Registry of Radiologic Technologists - American Registry of Radiologic Technologists, BLS - Basic Life Support - American Heart Association, RDMS - Registered Diagnostic Medical Sonographer - American Registry for Diagnostic Medical Sonography. Maintains complete knowledge of wave form physics, i.e.,, time gain compensation curves, attenuation factors, etc., required to set equipment variable properly for appropriate imaging of specific anatomy.