What is the difference between the ASRT and the ARRT?
The American Society of Radiologic Technologists (ASRT). Your NATIONAL professional association. Visit the ASRT website for lots more information. The American Registry of Radiologic Technologists (ARRT). This is the credentialing agency that gives the national test that most places require. If you pass the Registry exam, you are a registered radiologic technologist, which allows you to use the RT after your name. Annually you renew your credential and it requires continuing education for renewal of your Registry credential.