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 Games
4 free word games built on 44 ARDMS SPI Sonography Principles and Instrumentation terms across 5 topics. Every game deals terms at random and shows what each term means, so you can keep playing as long as you like.
How to Play
- 1.Read the clue and type the term (3 to 6 letters).
- 2.Green: right spot. Yellow: wrong spot. Gray: not in the term.
- 3.Solve it in 6 tries, then read the explanation.
- 1.Swap two neighboring tiles to line up 3 of the same term.
- 2.Longer lines, two lines at once and chains score more.
- 3.Play until no swap can make a line.
- 1.Flip two cards. A matching pair stays face up.
- 2.Each pair you find shows what the term means.
- 3.Clear the board in as few moves as you can.
- 1.Find each listed term in the letter grid.
- 2.Drag across its letters: across, down or diagonally.
- 3.Find all five as fast as you can.
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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 do the SPI vocabulary games work?
There are 4 games built on 44 SPI terms. In Guess the Term, a clue describes one term and you have six tries to spell it, with green, yellow and gray letters showing how close you are. In Term Match, six terms appear as colored tiles; swap neighbors to line up three or more of the same term, and each match shows what the term means. In Term Pairs, twelve face-down cards hide six pairs of terms; flip two at a time to find each pair, and every pair you find shows what the term means. In Term Search, five terms hide in a grid of letters, reading across, down or diagonally; drag across a term to circle it, and each term you find shows what it means.
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).