The Ultrasound Technologist in the acute care setting will perform a wide range of ultrasound exams, such as general ultrasound, breast, OB/GYN, and other ultrasound exams on incoming patients. Registered Diagnostic Medical Sonographer (RDMS) - American Registry for Diagnostic Medical Sonography (ARDMS) RDMS(OB, AB, Breast, or NIV) Upon Hire(Required) or.