ARDMS SPI Study Guide 2026
Everything you need to pass the ARDMS SPI exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 ARDMS SPI Exam Format at a Glance
📚 ARDMS SPI Topics to Study (61)
✍️ Sample ARDMS SPI Questions & Answers
1. The Doppler equation states that the Doppler shift is directly proportional to which of the following?
The Doppler shift (Δf) = 2 × f₀ × v × cos θ / c, meaning it is directly proportional to the transmitted frequency, flow velocity, and the cosine of the angle between the beam and flow direction.
2. Which QA measurement describes the shortest distance from the transducer face at which the system can display accurate image information?
The dead zone is the region immediately adjacent to the transducer face where the system cannot detect echoes due to the ring-down artifact from the transmitted pulse.
3. A resistive index (RI) value close to 1.0 in a renal artery waveform suggests:
An RI near 1.0 indicates minimal or absent end-diastolic flow, suggesting markedly elevated distal resistance.
4. The spatial pulse length (SPL) is determined by:
SPL = number of cycles per pulse × wavelength; shorter SPL (fewer cycles, shorter wavelength) means better axial resolution.
5. In a 1.5D array transducer compared to a standard 1D array, the key improvement is:
A 1.5D array adds a few rows of elements in the elevation direction, allowing limited electronic focusing to reduce slice-thickness artifacts compared to a fixed lens.
6. When the color Doppler gate is positioned at 90° to flow direction, the resulting color display will show:
At 90° insonation angle the Doppler frequency shift is zero, so no color signal is generated.
🎯 Free ARDMS SPI Practice Tests
📖 ARDMS SPI Guides & Articles
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