Pediatric Sonography (PS) Specialty Exam Prep

The ARDMS Pediatric Sonography (PS) specialty exam tests age-specific anatomy, neonatal pathology, and clinical skills that differ fundamentally from adult sonography. Key content areas include neonatal cranial ultrasound, developmental dysplasia of the hip (DDH), pyloric stenosis, and the spectrum of pediatric abdominal and genitourinary pathology.

What the PS Exam Covers

The Pediatric Sonography registration is a 170-question, 3 hours computer-based examination administered by the ARDMS. Questions are distributed across the official content domains in published weights, so a candidate who scores well in only one or two areas can still fall short overall. The most reliable way to prepare is to work through every domain in proportion to its weight rather than over-investing in the topics you already enjoy. Across all seven ARDMS specialties, repeat test-takers pass at far lower rates than first-time candidates, which makes thorough, domain-balanced preparation before your first attempt the single highest-value use of your study time.

Who This Exam Is For

The PS credential suits both sonography students sitting for their first registration and practicing sonographers adding a new specialty to an existing credential portfolio. Clinical experience in this area transfers directly to board performance, but the exam also rewards structured review of the published outline because it tests breadth that day-to-day scanning may not. Whether you are studying full time or fitting preparation around shifts, mapping each study block to a specific domain keeps your effort aligned with what the registry actually scores.

Exam Facts

Credential earned: RDMS
Exam format: 170-question, 3 hours examination
2025 first-time pass rate: 71%

High-Yield Focus Areas

Neonatal cranial ultrasound anatomy and pathology
Developmental dysplasia of the hip (DDH) — Graf and Harcke methods
Hypertrophic pyloric stenosis (HPS) — measurement criteria
Pediatric renal and genitourinary pathology
Age-specific normal values across neonates, infants, and children

Key Topics

Neonatal brain anatomy and IVH grading
DDH evaluation (Graf angles, Harcke dynamic method)
Pyloric stenosis measurement criteria
Pediatric abdominal pathology
Intussusception sonographic diagnosis
Pediatric renal abnormalities
Scrotal and genital pathology in children
Age-specific normal measurement ranges

How to Prepare

Start by downloading the current ARDMS PS content outline from ardms.org and allocating your study time in proportion to each domain's weight. Use Ultrasound Analytics to practice with 170-question timed exams that mirror the real ARDMS format. After each session, review your domain-level performance breakdown on the analytics dashboard to identify which content areas need more work and adjust your focus accordingly.

Related Specialties & Resources

Many sonographers pursue more than one registration. These specialties are most commonly paired with PS when planning a multi-credential path:

Continue with free PS practice questions, browse the full ARDMS practice-question hub, weigh your options on the specialty comparison hub, or read study guides on the Ultrasound Analytics blog.