Sonography Principles And Instrumentation Examination (SPI)

​​​​​​​​​​The Sonography Principles and Instrumentation (SPI) examination tests basic physical principles and instrumentation knowledge essential to sonography professionals and students.

While ARDMS manages the SPI examination, APCA, created exclusively to serve physicians, will be your destination to apply, prepare for, schedule and maintain all your certifications. You will log into MY APCA f or information regarding the examination and to apply online.

To earn an RDMS, RDCS, and RVT credential, you must pass the SPI examination and a corresponding specialty examination within five years. After passing the SPI examination, you can earn additional credentials without having to retake the SPI examination, provided you maintain active status.

You must wait 60 days before you can retake the SPI examination if you do not pass it however, you are welcome to reapply after 3 days