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ARDMS SPI Practice Test - Form A & B Actual Test 2026/2027 Questions with Detailed Verified Answers

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Prepare for the ARDMS SPI Practice Test – Forms A & B, 2026/2027 Edition with a comprehensive Sonography Principles & Instrumentation (SPI) Exam Prep Study Guide featuring original practice questions, correct answers, and detailed explanations. This resource covers essential ultrasound physics and instrumentation concepts, including sound-wave characteristics, frequency, wavelength, amplitude, propagation speed, intensity, attenuation, acoustic impedance, reflection, refraction, scattering, absorption, transducers, beam properties, focusing, axial and lateral resolution, Doppler principles, hemodynamics, spectral and color Doppler, imaging modes, artifacts, system optimization, bioeffects, ALARA, and quality assurance. Ideal for ARDMS® SPI candidates, sonography students, ultrasound technologists, and diagnostic medical sonography professionals preparing for registry-style practice and comprehensive exam review.

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ARDMS SPI Practice Test - Form A & B
ARDMS SPI Practice Test Actual
- Form TestA2026/2027
&B
Questions with Detailed Verified Answers
Study online at https://quizlet.com/_dj1bwo

1. a. Change in ves- Which variable caused the color change from blue to red of the vessel in this
sel direction image?
a. Change in vessel direction
b. Color scale set too low
c. Turbulent flow
d. Severe stenosis




2. C. Twice the With harmonic imaging, how does echo frequency relate to transmitted frequen-
transmitted fre- cy?
quency A. Half the transmitted frequency
B. Equal to the transmitted frequency
C. Twice the transmitted frequency
D. Four times the transmitted frequency

3. A. Frequency To which acoustic variable is penetration depth inversely related?
A. Frequency
B. Wavelength
C. Period
D. Propagation speed

4. D. Time-gain Which control improves the effects of attenuation?
compensation A. Dynamic range
B. Pulse inversion
C. Multiple focal zones
D. Time-gain compensation

5. A. Phasic Which term describes blood flow changes in response to respiration?
A. Phasic



, ARDMS SPI Practice Test - Form A & B
ARDMS SPI Practice Test Actual
- Form TestA2026/2027
&B
Questions with Detailed Verified Answers
Study online at https://quizlet.com/_dj1bwo

B. Parabolic
C. Spontaneous
D. Pulsatile

6. D. Thickness The center frequency of a transducer depends primarily upon which characteristic
of the crystal?
A. Width
B. Length
C. Spacing
D. Thickness

7. B. Ability to sam- What is an advantage of using pulsed wave Doppler compared to continuous wave
ple depth Doppler?
A. Higher echo sensitivity
B. Ability to sample depth
C. Decreased display of aliasing
D. Improved temporal resolution

8. A. 0 degrees Which Doppler angle to flow results in the greatest absolute Doppler shift?
A. 0 degrees
B. 15 degrees
C. 45 degrees
D. 60 degrees

9. D. Spatial com- Which term describes the averaging together of scan lines from multiple angles
pounding to create one image?
A. Harmonic imaging
B. Real-time three-dimensional imaging
C. Elastography
D. Spatial compounding

10. B. B-mode Which imaging modality can provide the most accurate measurement of tumor
volume?

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