The RDCS AE Exam, SPI Requirement & Logistics

What the AE Exam Is

The Adult Echocardiography (AE) examination is the cardiac specialty exam administered by ARDMS (American Registry for Diagnostic Medical Sonography), a certifying council of Inteleos. Passing AE — together with the separate SPI (Sonography Principles and Instrumentation) exam — earns you the Registered Diagnostic Cardiac Sonographer (RDCS) credential with an Adult Echocardiography specialty. AE tests your clinical knowledge of cardiac anatomy, physiology, pathology, hemodynamic measurement, and instrumentation as applied to adult transthoracic echocardiography. It does not re-test general ultrasound physics — that content belongs to SPI, a separate exam with its own study guide.

Understanding the exam's logistics before you begin studying prevents two common mistakes: under-budgeting study time for a 3-hour, 150-question exam, and misunderstanding how AE and SPI relate to each other on your RDCS eligibility timeline.

Exam Format At a Glance

The scaled score is not a raw percent-correct — ARDMS converts raw performance to the 300-700 scale using item-level difficulty weighting, so two candidates answering the same number of questions correctly can receive different scaled scores depending on which items they got right. Do not try to reverse-engineer "how many I can miss"; instead master content across all five domains, since weak performance in the heaviest domain (Pathology, 40%) has an outsized effect.

Hotspot (Mark-on-Image) Questions

A meaningful share of AE's ~150 items are hotspot questions: instead of choosing from four text answers, you click directly on a location within an echocardiographic still image or clip — for example, identifying a valve, a wall segment, or where to place a Doppler sample volume. Hotspot items test direct image recognition and cannot be guessed from text alone, so image-based practice is essential preparation, not optional extra.

The SPI Requirement

SPI (Sonography Principles and Instrumentation) is ARDMS's shared physics and instrumentation prerequisite exam, used across multiple specialties, not just cardiac. To earn RDCS with an AE specialty, you must pass both SPI and AE — in either order — within 5 years of each other. If you already hold another ARDMS credential (e.g., RDMS) and passed SPI while it remained active, you generally do not need to retake it to add AE, provided the 5-year window and active-status requirements are met. Many candidates pass SPI first as a foundation, then focus AE study purely on cardiac anatomy, physiology, pathology, and measurement — the approach this guide assumes. This guide covers AE content only; general ultrasound physics is SPI's domain, covered in a separate guide.

Eligibility Pathways

ARDMS does not require one fixed path into the AE exam. It publishes several numbered Prerequisite routes, and you apply under whichever matches your education and clinical background:

• Formal sonography education — graduation from a CAAHEP- or equivalent-accredited cardiac/general sonography program.
• Allied-health degree or license plus structured clinical training — for example, a registered nurse, radiologic technologist, or physician who completes documented on-the-job cardiac sonography training and supervised clinical scanning hours.
• On-the-job training routes — candidates without a sonography degree who accumulate a defined amount of full-time, supervised clinical cardiac ultrasound experience.

Every route also requires a completed Clinical Verification (CV) form, signed by a supervisor, documenting your hands-on scanning experience. With a current CV form already on file, your application can be approved automatically once the exam fee is paid; without one, submit the CV form with your application. Prerequisite routes and clinical-hour minimums can change between cycles, so confirm your specific route on ARDMS's official Prerequisite tool before applying — this guide covers exam content, not eligibility adjudication.

Retake Policy

If you do not pass on your first attempt:

1. You may reapply after 3 days.
2. You must wait 60 days from your prior attempt before you actually sit for the exam again.
3. You may attempt AE no more than 3 times within any 12-month period.
4. Applications are accepted year-round — there is no fixed testing-window calendar to work around.

There is no mandatory waiting period before your first attempt beyond completing eligibility requirements; the reapply/retest rules above apply only after an unsuccessful attempt.

Pass Rates — Context, Not a Target

ARDMS has published AE pass-rate data showing roughly 78% first-time pass and 71% overall pass (2023 cohort; check the current published figure rather than treating any single year as fixed). Use this only as calibration — the exam is passable with disciplined preparation but is not a formality. Let the blueprint weights in the next section, especially the 40% Pathology domain, drive your study plan rather than the pass rate itself.

How This Guide Is Organized

The remaining 11 chapters follow the V24.2 blueprint in study order: anatomy and physiology (Chapters 2-3), instrumentation and imaging views (Chapters 4-5), quantification and Doppler hemodynamics (Chapter 6), pathology in clinical clusters — valve disease, right-heart/prosthetic/infective disease, ischemic disease and cardiomyopathies, pericardial disease and masses, and congenital heart disease (Chapters 7-11) — and clinical care and safety (Chapter 12). Section 1.2, next, shows how the blueprint's domain weights should shape your study-time allocation.