APPLY NOW TO EARN REGISTERED DIAGNOSTIC MEDICAL SONOGRAPHER® (RDMS®)

How to Earn the RDMS Credential

The RDMS credential raises the standard of diagnostic medical ultrasound practice worldwide and promotes best practices for enhanced patient safety. The RDMS credential is designed to certify competence in the field of diagnostic medical sonography. By earning the RDMS credential, healthcare professionals gain a critical edge in promoting public safety in ultrasound.

Get Started

Please consult the information below to learn how to become RDMS certified, the application and examination process, and how certification pertains to your career in medical diagnostic sonography.

Prerequisites

To obtain the RDMS credential, you must meet the examination prerequisites and pass the physics and a corresponding specialty examination within five years:

Physics Examination:

Sonography Principles and Instrumentation (SPI)

AND

At least one Specialty Examination:

Abdomen (AB)*
Breast (BR)*
Fetal Echocardiography (FE)** (Application Period Open December 8, 2020 – February 16, 2021)
Obstetrics & Gynecology (OB/GYN)*
Pediatric Sonography (PS)** (Application Period Open December 15, 2020 – February 23, 2021)

Note: Applicants may pursue the FE specialty under either the RDMS or RDCS credential. Once you take the examination toward earning either the RDMS or RDCS credential, it cannot be switched.

Get Started Here

SPI

Sonography Principles & Instrumentation Examination

View SPI Requirement and General Prerequisites
View SPI Content Outline

Abdomen (AB) Examination

Breast (BR) Examination

Fetal Echocardiography (FE) Examination

Obstetrics & Gynecology (OB/GYN) Examination

Pediatric Sonography (PS) Examination

RDMS

Registered Diagnostic
Medical Sonographer

Apply in 4 Easy Steps

Complete the online application form and submit payment. If you are a first-time applicant, you are required to select the SPI requirement or a prerequisite under which to apply.

Gather the required supporting documentation.

Submit your supporting documentation for receipt within 21 days of applying online. Review of your application can take up to five business days.

Important Note About ARDMS Credentials

The only means of obtaining an ARDMS credential is by examination. Required prerequisites must be met before an applicant can earn an ARDMS credential. Applicants may apply and take the SPI examination and the specialty examination in any order. However, once the first examination is passed (either the SPI or specialty), you are required to take and pass the second examination within five years of passing the first examination.