Learn about free on-demand learning
Reference our medication guides for helpful information
Make a choice that matters
The best care starts with the best information
Participation in RhMSUS or the Musculoskeletal (MSUS or MSK) Ultrasound Certification in Rheumatology program is voluntary and open to anyone meeting the eligibility requirements.
ACR has partnered with Castle Worldwide, Inc. to manage the process. You may be directed to/from Castle while applying.
Steps to RhMSUS certification:
There are four pathways to eligibility. Each pathway contains career status, medical license possession, and musculoskeletal ultrasound scan experience/education requirements.
Find your eligibility pathway>
Membership in the American College of Rheumatology (ACR) or Association for Rheumatology Health Professionals (ARHP) is not required.
Each pathway has requirements for a minimum amount of MSUS ultrasound CME credits and MSUS scans performed.
Credits earned outside of the required “at least 14 AMA PRA Category 1 Credits™ from a single course that includes hands-on scanning practice” must be AMA PRA Category 1 Credits™ specifically related to MSUS.
In case of application audit, a copy of the earned CME certificate(s) must be submitted.
For more information see RhMSUS CME Activity Checklist in Appendix E. of the Candidate Handbook (pg. 21).
Ultrasound scans can be limited or complete, diagnostic or therapeutic. For each unique patient/subject/model, no more than one scan per day can be logged.
In case of application audit, a log with the information included on the Sample Patient/Practice Scan Log or a billing log (both without identifying information in conformity with HIPAA) must be submitted for proof of the number of scans completed.
The RhMSUS exam is offered twice a year. Applications will automatically be scheduled for the upcoming testing window based on the date the application is received.
The certification registration fee includes the processing of the application, examination registration and one testing appointment.
Candidates must complete an online application and a multiple-choice, computer-based examination.
The examination will take place at Castle Internet-Based Testing Sites located throughout the United States. Thirty days prior to the beginning of the testing window, a Castle representative will contact you via email to schedule your examination. Seats are filled on a first-come, first-served basis, based on test center availability.
Candidates can take the examination at an international testing site for an additional $150 that will be collected at the time of scheduling.
The examination consists of 100 multiple-choice questions based on the following domains:
The Candidate Handbook contains the following resources to help you prepare for the examination:
Examination results are mailed approximately six weeks after the close of the testing window.
Individuals who pass the examination will receive a personalized certificate and wallet card. In the case of an eligibility audit, certificates will be held until the audit is complete.
Individuals who do not pass the examination may retest in the next testing window. Candidates may not take the examination more than two times in any 12-month period. Candidates who need to retest will receive a Notice to Schedule email 45 days before the next testing window. During the scheduling process, candidates will be prompted to pay the retake fee of $100.
Recertification is required at 10-year intervals effective as of the date of RhMSUS certification. To complete the recertification process, the candidate must complete the following: