The postprimary eligibility pathway is for those who are currently certified and registered with ARRT and would like to pursue an additional credential. This pathway may also be used by those who hold a credential from ARDMS or NMTCB. 

  Bone Densitometry
  Breast Sonography
  Cardiac Interventional Radiography
  Computed Tomography
  Magnetic Resonance Imaging*
  Vascular Interventional Radiography
  Vascular Sonography*

*You can earn an MRI or Vascular Sonography credential using the primary or postprimary eligibility pathway.

Education Requirement

The education requirement for earning a credential using the postprimary eligibility pathway includes:

Learn More

ETHICS Requirement

To become a candidate for certification and registration, you must demonstrate good moral character. Learn more about our ethics requirements and how you can request an ethics review preapplication. 

Learn More


After you meet the education and ethics requirements, you’ll need to pass an exam before earning ARRT credentials. Learn more about our examination requirement—as well as how we create exams, what to expect on exam day, and what happens after the exam.  

Learn More