ARDMS SPI Sonography Principles and Instrumentation Vocabulary Game
Exam terms with clues and explanations by OpenExamPrep.
About the ARDMS SPI Sonography Principles and Instrumentation Vocabulary Game
A free word game for the ARDMS SPI Sonography Principles and Instrumentation exam. Each round shows a clue for one of 44 exam terms across 5 topics. Recall the term, spell it out, then read a short explanation. Rounds pick a random term, so you can keep playing as long as you like.
How to Play
- 1Read the clue and type a term with the right number of letters (3 to 6). Abbreviations count: type the letters only.
- 2Press Check Answer or Enter. Each letter changes color to show how close you are.
- 3You have 6 tries. Stuck? Need a hint? asks the AI tutor for a nudge without giving the term away.
- 4After the round, read the explanation, ask the AI to explain it, share your result, or press Next.
- ARight letter, right spot
- AIn the term, wrong spot
- ANot in the term
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Topics in the ARDMS SPI Sonography Principles and Instrumentation Vocabulary Game
Sound and Exams
Ultrasound Transducers
Image Optimization
Doppler Concepts
Safety and Quality
Sources for these terms (13)
- ARDMS Sonography Principles and Instrumentation (SPI) Examination Content Outline (Version 24.1) · Source checked 2026-11-02
- IAEA Diagnostic Radiology Physics: A Handbook for Teachers and Students (Chapters 12 and 13) · Source checked 2026-11-02
- FDA Guidance: Marketing Clearance of Diagnostic Ultrasound Systems and Transducers · Source checked 2026-11-02
- FDA Medical Imaging: Ultrasound Imaging · Source checked 2026-11-02
- 21 CFR § 892.1550 Ultrasonic Pulsed Doppler Imaging System · Source checked 2026-11-02
- 21 CFR § 892.1570 Diagnostic Ultrasonic Transducer · Source checked 2026-11-02
- AIUM Official Statement: As Low As Reasonably Achievable (ALARA) Principle · Source checked 2026-11-02
- AIUM Official Statement: Recommended Maximum Scanning Times for Displayed Thermal Index (TI) Values · Source checked 2026-11-02
- AIUM Official Statement: Statement on Biological Effects of Ultrasound in Vivo · Source checked 2026-11-02
- AIUM Official Statement: Guidelines for Cleaning and Preparing External- and Internal-Use Ultrasound Transducers and Equipment Between Patients (2025 Revision) · Source checked 2026-11-02
- AIUM Official Statement: Statement on Preventing Work-related Musculoskeletal Disorders · Source checked 2026-11-02
- OSHA Hospital eTool: Clinical Services — Sonography · Source checked 2026-11-02
- AIUM Practice Parameter for the Performance of an Ultrasound Examination in the Practice of Urology · Source checked 2026-11-02
About the SPI Exam
ARDMS Sonography Principles and Instrumentation — REQUIRED physics prerequisite for ALL ARDMS specialty credentials (RDMS Abdomen/OB-GYN/Breast/Pediatric, RDCS Adult/Pediatric/Fetal, RVT, RMSKS). Must pass SPI + specialty within 5 years for full credential. Validates expertise in ultrasound physics (wave propagation, attenuation, range equation), transducer construction and beam, pulse-echo instrumentation (TGC, dynamic range, postprocessing), Doppler principles (PW, CW, color, power), QA/bioeffects/safety (ALARA, MI, TI), and artifact recognition.
Exam sponsor: ARDMS. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.
Questions
110 questions
Time Limit
2 hours
Passing Score
Scaled 555/700
Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.
Official sources
Frequently Asked Questions
Is the SPI vocabulary game free?
Yes. The game is free to play with no sign-up. Signing in adds AI explanations for any term.
How does the SPI vocabulary game work?
Each round shows a clue for one of 44 SPI terms. Guess the term in six tries: green means the right letter in the right spot, yellow means the letter is in the term but in another spot, and gray means it is not in the term. After the round, read the explanation and play the next term.
Where do the SPI terms come from?
OpenExamPrep researched each term from the ARDMS content outline and primary sources, listed under Sources on this page. The game is independent study material, not an official exam resource.
Why is SPI required for all ARDMS specialty exams?
ARDMS requires SPI as a separate physics prerequisite to ensure all sonographers — regardless of clinical specialty — have a foundational understanding of ultrasound physics, instrumentation, and safety. Candidates must pass SPI + their specialty exam (e.g., AB, OB/GYN, RVT, RMSKS, BR, PS) within 5 years to receive the full credential. SPI alone does not grant a clinical credential.
What is the Doppler equation?
Doppler frequency shift Δf = (2 × f₀ × v × cos θ) / c, where f₀ = transmitted frequency, v = blood velocity, θ = angle between sound beam and flow vector, c = speed of sound (1540 m/s in soft tissue). Angle correction: 60° is the maximum acceptable angle (cos 60° = 0.5; smaller angle gives higher accuracy). Angle 90° gives no Doppler shift (cos 90° = 0).