RPNI Examination
Upcoming Examination Dates:
October 8-14, 2026: Registration coming soon!
February 11-17, 2027: Registration coming soon!
Register to take the exam at any time for an additional $100:
Coming soon!
Registration Rates:
Physician Member: $1,250
Physician Non-Member: $1,750
Physician in Training Member: $995
Physician in Training Non-Member: $1,400
Foreign Practicing Physician Group A Country: $395
Foreign Practicing Physician Group B Country: $195
Exam Information
Frequently Asked Questions
Eligibility

Please see the pathway to determine if you are eligible to sit for the RPNI Examination. If you have questions regarding eligibility, please contact Andrea Powell at andrea@asnweb.org.
Exam Preparation
The ASN examination in Neurosonology is designed to assess a physician's ability to apply knowledge, concepts, and principles of neuroimaging that constitute the basis of safe and effective patient care. The physics section of the exam is particularly rigorous and requires thorough preparation to perform well. They are designed to assess whether the candidate can apply the medical knowledge and understanding of biomedical and clinical sciences considered essential for the unsupervised practice of neuroimaging. The Neurosonology Proficiency Examination is not based on the review course in Neurosonology given at the ASN Annual Meeting. The course does not cover the entire content of the exam.
Do you have study guides or practice exams?
We do not have study guides or practice exams. We can offer the following suggested readings:
Suggested Reading for Physics:
Understanding Ultrasound Physics (3rd or 4th edition) by Sidney K. Edelman
Suggested Reading for TCD and Carotid Ultrasound:
Cerebrovascular Ultrasound in Stroke Prevention and Treatment (2nd edition) by Andrei V. Alexandrov
Stroke Prevention Trial in Sickle Cell Anemia (STOP): extended follow-up and final results
Practice Standards for Transcranial Doppler Ultrasound: Part 1 by Andrei Alexandrov et al
Rescheduling Exam
If you need to reschedule your examination, please contact the ASN Executive Office. Rescheduling will incur in a $100 administration fee. Rescheduling is only available ONCE and for one year from the date of your initial exam application.
Exam Refunds
No refunds will be given for the exam.
How can I submit a question for the exam?
Please complete this form.
Do CMEs need to be neurology specific or can they be any type of ultrasound (e.g. nerve and muscle CME)
Pertinent CME must relate to neurovascular ultrasound (e.g., physics, principles, techniques, clinical applications, quality improvement, or lab accreditation) to qualify. This aligns with IAC-Vascular Testing definitions used when evaluating CME for medical directors or staff applying for carotid or TCD lab accreditation.
Can someone pass only one section of the exam and still be certified in that area?
No. To be eligible for certification, a candidate must pass the Physics section and at least one clinical specialty section. Acceptable combinations include Physics and TCD, Physics and Carotid, or all three sections: Physics, TCD, and Carotid. Passing a clinical section without also passing Physics does not qualify a candidate for certification.
What is the cost to re-take the exam?
Member - $325
Non-member - $525
Physician in Training - $225
Is ASN membership required to obtain certification?
In the United States, physicians are not required to be an ASN member to obtain and maintain certification. If you are a foreign practicing physician, you must become an ASN member to obtain and maintain your certification.
If a person is taking (not a re-take) only part of the exam because they passed the other two parts in the past, do they need to resubmit verification of CME within the last 3 years?
No, since they had enough CME hours at the time they took the exam initially, they do not need to submit documentation of CME within the last three years. They do, however, need to submit documentation verifying their interpretation of whatever section they are taking (Carotid or TCD).
Are AMA Category I credits the only type of CME credit that counts towards the exam CME requirement?
These are the most common type of credit. Other credits will be considered by on a case by case basis.
International examinees often do not have access to AMA Category 1 CME credits. What type of CME do they need to be eligible and re-certify?
40 CME credits (or equivalents hours of didactics specific to ultrasound). They do not need to be AMA Category 1.
Can one count CME from a larger meeting if it is related to neurovascular ultrasound?
If one attends AAN, RSNA, or any other meeting, it will depend on what portion was related to ultrasound, or lab function. It is often necessary to have them send in a list of the topics (copy of the program) for a meeting to document which are appropriate, if they wish to count CME from a larger meeting.
If one does not have enough CME at the time they apply to sit for the exam, and they plan to attend the ASN Annual Meeting to obtain the rest of their required CME credits, is that acceptable?
Yes. They must include a statement in their application materials stating that this is what they plan to do, and their certificate is mailed to them only after we receive their CME documentation from the meeting.
How does an exam applicant show verification of their 100 TCD/Carotid interpretations? Do they need to submit documentation of each case? Does the supervising individual need to be an MD that is certified by ASN?
No, we do not require submission of individual case interpretations. Instead, applicants must provide a letter from their supervising physician confirming that they have completed at least 100 interpretations. “Adequate supervision” refers to the standard oversight structure in place within a laboratory that employs appropriately credentialed personnel. Applicants are not required to come from ICAVL-accredited laboratories, nor must their supervisors be ASN-certified.
ASN will accept studies performed by the applicant, provided it is clearly documented that the applicant conducted the test and prepared a preliminary report, which was subsequently reviewed by a credentialed MD at the facility. ASN certification of the reviewing physician is not required. The preliminary report serves as evidence that the applicant independently interpreted their studies. Supervision by a chief technologist is also acceptable, as this reflects standard laboratory practice in which the preliminary report is reviewed and approved by the most experienced staff member before final physician interpretation.
Can CME credits older than three years be used towards sitting for the exam or maintenance of certification?
Generally, no. If there seems to be a special circumstance or extenuating situation then this may be considered.
Does the fulltime fellowship requirement mandate that the fellowship be in neurovascular ultrasound?
No. To be eligible for certification, a candidate must pass the Physics section and at least one clinical specialty section. Acceptable combinations include Physics and TCD, Physics and Carotid, or all three sections: Physics, TCD, and Carotid. Passing a clinical section without also passing Physics does not qualify a candidate for certification.
Aside from the ASN Annual Meeting, where else can physicians earn relevant neurovascular CME credit?
The IAC Vascular Testing website offers a list of CME resources for physicians: http://www.intersocietal.org/vascular/main/cme_resources.htm
What is the correct wording for exam certificates?
All three parts: Applied Principles of Physics and Fluid Dynamics, Carotid Duplex, Transcranial Doppler
- Two parts: Applied Principles of Physics and Fluid Dynamics, Carotid Duplex
- Two parts: Applied Principles of Physics and Fluid Dynamics, Transcranial Doppler
Will a UCNS fellowship in Neurocritical Care (or other neuro subspecialty) satisfy the fellowship requirement for the Neurosonology Exam?
The answer depends on your fellowship curriculum. If your fellowship provides you with an opportunity to learn TCD at least for SAH and brain death, and you either performed or interpreted TCDs for these or other indications under supervision and continuously thru fellowship, this would qualify you to register for the exam.
Your fellowship director simply needs to state in the letter that learning TCD is included into your fellowship curriculum. One needs to have an in depth exposure to TCD (exam is tough on physics and hemodynamics).
What title do they hold for passing the ASN Exam?
This is not a board exam, so does not allow one to claim to be a “diplomate”. It is also not an accreditation process, which is left to IAC-Vascular. It is a certification exam, so all one can really say is that one is has successfully completed/passed the ASN Neurosonology Certification Exam, is certified in Neurosonology, or has an additional credential in Neurosonology (with specific TCD or carotid if only one or the other).


