Valid American Registry of Radiologic Technologists (ARRT) certification or; Valid American Registry for Diagnostic Medical Sonography (ARDMS) certification or; Valid Nuclear Medicine Technology Certification Board (NMTCB) certification or; Valid American Registry of Magnetic Resonance Imaging Technologists (ARMRIT) certification. Graduate of accredited school of Radiologic Technology or; Graduate of accredited school of Sonography or; Graduate of an accredited school of Nuclear Medicine or; Graduate of an approved MRI technologist program through American Registry of Magnetic Resonance Imaging Technologists (ARMRIT).