The ARDMS Sonography Credential (RDMS or RDCS) is an international credential that shows you have met a recognised standard in ultrasound work. It is voluntary in Canada, so you do not need it to be hired, but it can help your resume stand out.
Official website ↗The ARDMS credential is issued by ARDMS, an international body that tests and certifies sonographers. The RDMS designation covers general areas such as abdominal and obstetric and gynecologic imaging. The RDCS designation covers heart imaging, also called echocardiography.
In Canada, many sonographers hold the Sonography Canada credential instead, which is listed separately on this site. The ARDMS credential is a voluntary option. Some employers value it, especially in workplaces that hire internationally trained staff or want proof of specialty skills. It is used in careers such as diagnostic medical sonographer, sonographer, ultrasound technician and ultrasound technologist.
You will usually sit a physics and instrumentation exam plus a written specialty exam in your chosen area. The exams are computer-based and test both the science of ultrasound and how you apply it in practice. Plan for steady study over several months.
To keep your credential active, you need to complete continuing education on a regular schedule and pay the renewal fee. ARDMS tracks your progress and sends reminders, so keep records of your learning activities.