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Exam Overview
Exam Code SPI
Exam Name ARDMS Sonography Principles and Instrumentation
Vendor ARDMS
Total Questions 215
Last Updated 26-Oct, 2026
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Free SPI Practice Questions

Explore 4 free practice questions for the ARDMS SPI exam and review the answers and explanations to support your preparation.

  1. Question 1

    Single answer

    Which adjustment will reduce the artifact in the cystic lesion in image A resulting in image B?  

    • Option A:
      Turn off harmonics
      Correct
    • Option B:
      Increase dynamic range
      Correct
    • Option C:
      Turn on edge enhancement
      Correct
    Show Answer & Explanation Hide Answer & Explanation

    Correct Answer: C

    Explanation

    In image A, the borders of the cystic lesion might appear less defined due to a lack of edge enhancement. By turning on edge enhancement, the ultrasound system processes the image to accentuate the boundaries, leading to a clearer and more distinct outline of the cystic lesion as seen in image B. This adjustment reduces the artifact within the cystic lesion by emphasizing the differences in the adjacent tissue interfaces, thus improving the overall image quality. Reference: American Registry for Diagnostic Medical Sonography (ARDMS) Sonography Principles and Instrumentation guidelines on image optimization techniques. 

  2. Question 2

    Single answer

    Which target group is used to evaluate transverse distance measurement accuracy in this tissue- mimicking phantom image?


    • Option A:
       Option A
      Correct
    • Option B:
      Option B
      Correct
    • Option C:
      Option C
      Correct
    • Option D:
      Option D 
      Correct
    Show Answer & Explanation Hide Answer & Explanation

    Correct Answer: D

    Explanation

    In the tissue-mimicking phantom image, Option D (blue box) is used to evaluate transverse distance measurement accuracy. Phantoms are used to simulate human tissue and provide a standardized way to test the accuracy and precision of ultrasound machines. Transverse distance measurement  accuracy is assessed by measuring known distances between targets in the phantom. The blue box (Option D) typically contains targets positioned to specifically test the accuracy of transverse measurements, ensuring that the ultrasound system provides reliable and precise distance readings. Reference ARDMS Sonography Principles and Instrumentation (SPI) Exam Study Guide "Quality Assurance for Ultrasound Imaging Systems" by AAPM (American Association of Physicists in Medicine)

  3. Question 3

    Single answer

    Which artifact may be caused by incorrect color Dopplergain setting? 

    • Option A:
      Bleed/Blossoming
      Correct
    • Option B:
      Clutter/Haze
      Correct
    • Option C:
      Twinkle
      Correct
    • Option D:
      Aliasing
      Correct
    Show Answer & Explanation Hide Answer & Explanation

    Correct Answer: A

    Explanation

    Incorrect color Doppler gain settings can cause the artifact known as bleed or blossoming. When the color Doppler gain is set too high, it can cause the color signal to "bleed" outside the actual boundaries of the blood vessel, leading to an overestimation of the area of flow. This artifact makes it appear as though the blood flow extends beyond the true vessel walls, which can obscure the accurate interpretation of the Doppler image. Reference ARDMS Sonography Principles and Instrumentation (SPI) Exam Study Guide "Diagnostic Ultrasound: Principles and Instruments" by Frederick W. Kremkau 

  4. Question 4

    Single answer

    Which statement describes the purpose of using a spectral Doppler wall filter?

    • Option A:
      To widen the area in which the Doppler shift is sampled
      Correct
    • Option B:
      To clean up the audio signals
      Correct
    • Option C:
      To eliminate the higher velocity signals
      Correct
    • Option D:
      To eliminate the lower velocity signals
      Correct
    Show Answer & Explanation Hide Answer & Explanation

    Correct Answer: D

    Explanation

    The purpose of using a spectral Doppler wall filter is to eliminate lower velocity signals. Wall filters are designed to remove low-frequency Doppler shifts caused by the motion of the vessel walls or surrounding tissues, which are generally of no diagnostic value. By eliminating these lower velocity signals, the wall filter helps to clean up the Doppler signal and reduce clutter, allowing for a clearer and more accurate display of blood flow velocities. Reference ARDMS Sonography Principles and Instrumentation (SPI) Exam Study Guide "Diagnostic Ultrasound: Principles and Instruments" by Frederick W. Kremkau