FROM THE ARRT:
When using your credentials in conjunction with your name, keep these things in mind.
After your full name, include a comma followed by the initials R.T. Don’t forget the periods!
Then, include, in parentheses, the abbreviations in the discipline(s) in which you hold ARRT credentials. You can find a complete list by visiting arrt.org, clicking on ABOUT at the top of the page and selecting Credential Options from the drop-down menu.
Most people list their credentials in the order in which they earned them. Registered Radiologist Assistants (R.R.A.) , however, should list that credential first.
Complete your credentials by placing ARRT in parentheses. Doing so avoids any confusion with certification from any other source.
Don’t add spaces in anywhere in the string of letters that appear in parentheses.
ARRT APPROVED LIST OF PRIMARY AND POST-PRIMARY EXAMS AND THEIR SUBSEQUENT CREDENTIALS.