Looking for ARDMS SPI practice questions with real explanations? Try six free questions below, then see how our 2,000-question SPI bank is organised, including 1,000 questions arranged chapter by chapter across 24 physics chapters.
Try 6 free SPI questions
Q1. What is the wavelength of a 10.0 MHz superficial vascular transducer in soft tissue?
Answer C. λ = 1.54 / 10.0 MHz = 0.154 mm.
Q2. If PRF is 5 kHz, what is PRP?
Answer C. PRP = 1 / PRF = 1 / 5,000 Hz = 0.0002 s = 0.2 ms = 200 μs.
Q3. If two structures parallel to the beam are 1.2 mm apart, and axial resolution is 0.8 mm, how do they appear?
Answer C. Target separation (1.2 mm) exceeds axial resolution (0.8 mm), so they are clearly resolved.
Q4. Under which condition is aliasing most likely to occur?
Answer B. Deep sample volume lowers PRF, and high frequency increases Doppler shift, maximizing aliasing risk.
Q5. If sound travels through a large lipoma (speed = 1,450 m/s), where are reflectors posterior to the lipoma displayed?
Answer C. Sound travels slower in fat (1,450 m/s), taking longer to return; the system misinterprets delay as greater depth.
Q6. If a clinical ultrasound image has adequate quality, is it acceptable to keep scanning indefinitely to demonstrate images to observers?
Answer A. ALARA requires limiting acoustic exposure time strictly to medically indicated evaluations.
1,000 SPI MCQs in 24 chapters
Study one chapter, then practise just that chapter. Each chapter is a separate topic in the SPI question bank.
| Chapter | Topic | MCQs |
|---|---|---|
| 1 | The Basics | 35 |
| 2 | Sound | 35 |
| 3 | Describing Sound Waves | 50 |
| 4 | Describing Pulsed Waves | 40 |
| 5 | Intensities | 30 |
| 6 | Interaction of Sound and Media | 60 |
| 7 | Range Equation | 30 |
| 8 | Transducers | 55 |
| 9 | Sound Beams | 35 |
| 10 | Axial and Lateral Resolution | 40 |
| 11 | Display Modes | 25 |
| 12 | Two-Dimensional Imaging | 50 |
| 13 | Real-Time Imaging | 40 |
| 14 | Pulsed Echo Instrumentation | 50 |
| 15 | Displays and Image Processing | 45 |
| 16 | Dynamic Range | 25 |
| 17 | Harmonics and Contrast Agents | 35 |
| 18 | Hemodynamics | 45 |
| 19 | Doppler | 60 |
| 20 | Optimizing Doppler Imaging | 40 |
| 21 | Artifacts | 60 |
| 22 | Quality Assurance | 40 |
| 23 | Sonographers in the Clinical Setting | 30 |
| 24 | Bioeffects | 45 |
How members use the SPI bank
- Tutor mode shows the explanation after each answer; timed mode runs a 110-question, 2-hour mock like the real SPI.
- My performance shows your score per chapter and your weak zones, with one tap to practise them.
- Progress is saved to your account, so you can switch between phone and laptop.
- Questions are labelled recall, application or calculation, with the exam domain in every reference.
Read the SPI exam guide and the last-minute SPI review for formulas and exam-day tips.
Frequently asked questions
How many questions are on the SPI exam?
About 110 multiple-choice questions in 2 hours. The passing score is 555 on a 300–700 scale.
How many SPI practice questions should I do?
Aim for at least 1,000 to 1,500 explained questions, with timed 110-question mocks in the final two weeks. Members get 2,000 SPI MCQs, including 1,000 organised by chapter.
Are these questions from the real ARDMS exam?
No. They are original registry-style practice questions written to the SPI content outline, with full explanations.
Questions are original practice items by Radiology Boards. Exam facts from Inteleos (ARDMS), checked November 2026.