SPI Apply Doppler Concepts Practice Questions
Domain 4 of 5 in the SPI content outline · 34% of the exam, about 37 of 110 questions
110 questions across all five domains in 2 hours, with a score for Doppler so you know where you stand.
Free Doppler drillA spectral waveform's peaks are cut off and wrap around to the bottom of the display. Which change does NOT help?
Apply Doppler Concepts on the SPI exam
Apply Doppler Concepts is 34% of the SPI exam, about 37 of 110 questions and the largest domain by far. It covers the Doppler equation and how angle changes it, every Doppler mode and its controls, aliasing and how to fix it, reading spectral waveforms, the physics of blood flow, and the artifacts and measurements that follow.
- Share of the exam
- 34% in the official content outline, about 37 of 110 questions
- Our drill
- 10 questions from 124 Doppler questions, untimed, an explanation after every answer; one free attempt, unlimited with a pass
What Apply Doppler Concepts questions test
- The Doppler shift: the Doppler equation, the cosine of the angle, why 0 degrees gives the largest shift and 90 degrees none, and angle correction at 60 degrees or less
- Controls: wall filter, sample gate, spectral and color gain, spectral and color scale, baseline, color priority, color maps, packet size and color box size
- Aliasing: the Nyquist limit (PRF / 2) and the ways to remove aliasing; why continuous wave never aliases and why high PRF Doppler brings range ambiguity
- Modes: continuous wave, pulsed wave, color (autocorrelation, mean velocity), power and tissue Doppler, and the fast Fourier transform for spectral analysis
- Hemodynamics and waveforms: pressure gradients, resistance and Poiseuille’s law, laminar, plug and turbulent flow, Reynolds number, continuity and Bernoulli equations, resistance indices, venous phasicity, and the artifacts mirroring, blooming, flash and twinkling
Sit the full exam under the real clock
110 questions across all five domains in 2 hours, with a score for Doppler so you know where you stand.
Free Doppler drillHow to study it
- Start with the Doppler equation: list what raises the shift (velocity, frequency, smaller angle) and what lowers it.
- Memorize the aliasing fixes in order: raise the scale, lower the baseline, choose a lower frequency or a shallower gate, then switch to continuous wave.
- Learn the hemodynamic equations by their effect on a stenosis: velocity up, pressure down, turbulence after.
- Take the Doppler drill until you score 80% or better; this domain is a third of the exam.
Common questions
How many Doppler questions are on the SPI?
Apply Doppler Concepts is 34% of the exam, about 37 of 110 questions, the largest domain.
Is hemodynamics part of the SPI Doppler domain?
Yes. The outline lists applying general hemodynamic concepts such as pressure gradient and resistance in the Doppler domain.
110 questions across all five domains in 2 hours, with a score for Doppler so you know where you stand.
Free Doppler drillThe other SPI domains
Sources
- Inteleos: Sonography Principles and Instrumentation (SPI) exam page (format, scoring, fee, retakes, pass rates)
- Inteleos: SPI Content Outline, version 24.1
- Inteleos: exam fee schedule
- Inteleos: passing standard
- Inteleos: re-applicant resources (60-day wait)
- Inteleos: schedule an exam (Pearson, 90-day window)
- Inteleos: SPI and specialty exam prerequisites
- Inteleos: practice tests
Original practice questions for exam preparation, written to the ARDMS SPI Content Outline (version 24.1). They are not questions from the SPI exam or from Inteleos. Independent practice, not affiliated with or endorsed by ARDMS, APCA, Inteleos or Pearson.