Under the guidance of a registered MRI Technologist, Proctor, or MRI Instructor, you'll gain real-world experience while developing the technical skills, safety knowledge, and patient-care expertise needed to succeed in MRI. Licensure, Certifications, and Clearances: ARRT, NMTCB (Nuclear Medicine Technology Certification Board, or Registered Diagnostic Medical Sonographer (RDMS registered or must be enrolled in the Tesla Institute.