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[General] New SPI Test Pattern | Valid SPI Exam Forum

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【General】 New SPI Test Pattern | Valid SPI Exam Forum

Posted at yesterday 13:12      View：10 | Replies：0        Print      Only Author   [Copy Link] 1#
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ARDMS SPI Exam Syllabus Topics:
TopicDetails
Topic 1
  • Manage Ultrasound Transducers: This section of the exam measures skills of Ultrasound Technicians and focuses on the management and proper use of different types of transducers. It evaluates knowledge of transducer components, frequency selection, and application of various 2D, 3D, 4D, and nonimaging transducer concepts. Candidates must show they can choose the appropriate transducer for specific examinations and make necessary frequency adjustments to ensure image quality.
Topic 2
  • Provide Clinical Safety and Quality Assurance: This section of the exam measures skills of Clinical Ultrasound Supervisors and focuses on maintaining safety and quality standards in ultrasound practice. It includes infection control protocols, transducer and machine integrity checks, and quality assurance testing using tissue-mimicking phantoms. The section also requires familiarity with statistical parameters like sensitivity and specificity to evaluate diagnostic performance and ensure consistent, reliable imaging outcomes.
Topic 3
  • Apply Doppler Concepts: This section of the exam measures skills of Vascular Sonographers and evaluates understanding and application of Doppler ultrasound principles. It includes knowledge of Doppler angle, flow dynamics, and color and spectral Doppler imaging. The section also covers eliminating aliasing, interpreting waveforms, applying continuous and pulsed wave Doppler, and optimizing Doppler gain and scale to accurately measure blood flow and velocity within vessels.
Topic 4
  • Perform Ultrasound Examinations: This section of the exam measures skills of Sonographers and covers how to conduct ultrasound procedures while ensuring patient safety and diagnostic accuracy. It includes understanding of imaging protocols, ergonomics, patient care, and the interaction between sound and tissue. Candidates are expected to demonstrate abilities to manage patient encounters, apply 3D
  • 4D and contrast imaging concepts, identify and correct artifacts, and follow confidentiality and privacy standards throughout the scanning process.
Topic 5
  • Optimize Sonographic Images: This section of the exam measures skills of Diagnostic Medical Sonographers and assesses their ability to enhance image quality using advanced optimization techniques. It includes understanding axial, lateral, elevational, and temporal resolution, as well as manipulating gain, depth, magnification, and dynamic range. Examinees are expected to apply harmonic imaging, spatial compounding, and gray-scale techniques to produce clear, accurate diagnostic images.

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ARDMS Sonography Principles and Instrumentation Sample Questions (Q22-Q27):NEW QUESTION # 22
What is assessed with power Doppler?
  • A. Velocity of flow
  • B. Laminar flow
  • C. Viscosity
  • D. Presence of flow
Answer: D
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Power Doppler detects the strength (amplitude) of returning Doppler signals, which reflects the presence of flow regardless of direction or velocity. It is more sensitive to low-velocity flow and is less angle-dependent than conventional color Doppler.
Principles and Instrumentation state:
"ower Doppler displays the amplitude of Doppler shifts, representing the presence of flow. It does not display direction or velocity." Laminar flow (A) and velocity (C) are not specifically measured by power Doppler.
Viscosity (D) cannot be assessed by Doppler ultrasound.
Therefore, the correct answer is B: Presence of flow.
-

NEW QUESTION # 23
What is the primary interaction that occurs when sound waves encounter a smooth, flat surface?
  • A. Diffraction
  • B. Reflection
  • C. Attenuation
  • D. Interference
Answer: B
Explanation:
When sound waves encounter a smooth, flat surface, the primary interaction is reflection. This means the sound waves bounce back towards the transducer, producing echoes that are used to create the ultrasound image. Reflection is most effective when the surface is smooth and perpendicular to the sound beam, allowing for the maximum return of sound waves to the transducer.
Reference:
ARDMS Sonography Principles and Instrumentation guidelines
Zagzebski, J. A. (1996). Essentials of Ultrasound Physics.

NEW QUESTION # 24
What is the term for the change in direction of a sound wave crossing a tissue boundary at an oblique angle?
  • A. Reflection
  • B. Attenuation
  • C. Refraction
  • D. Absorption
Answer: C
Explanation:
Refraction is the change in direction of a sound wave as it crosses a boundary between two different tissues at an oblique angle, where there is a difference in propagation speeds between the tissues. This bending of the sound wave path occurs due to the change in speed, causing the wave to change direction according to Snell's law. Refraction can result in artifacts such as edge shadowing and displacement of structures in an ultrasound image.
Reference:
ARDMS Sonography Principles & Instrumentation Guidelines
Hedrick WR, Hykes DL, Starchman DE. Ultrasound Physics and Instrumentation. 4th ed. Philadelphia, PA: Elsevier Saunders; 2005.

NEW QUESTION # 25
Which pulsed-wave Doppler adjustment would be appropriate to correct the aliasing seen in this image?

  • A. Increase the Doppler pulse repetition frequency.
  • B. Decrease the spectral Doppler gain.
  • C. Decrease the Doppler pulse repetition frequency.
  • D. Increase the spectral Doppler gain.
Answer: A
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Aliasing occurs in pulsed-wave Doppler imaging when the Doppler shift frequency exceeds the Nyquist limit (which is half the pulse repetition frequency, PRF). This results in a wrap-around of the Doppler signal, which appears as a reversal of flow direction (aliasing artifact).
According to standard Principles and Instrumentation references in sonography:
"To eliminate aliasing, the Doppler PRF (scale) should be increased. Increasing the PRF raises the Nyquist limit and therefore allows for higher measurable velocities without aliasing." The correct adjustment to correct this aliasing artifact is C: Increase the Doppler pulse repetition frequency. This effectively increases the Nyquist limit and resolves the wrap-around aliasing appearance.
Options A and B (adjusting the spectral Doppler gain) would only change the appearance of the Doppler waveform (i.e., its amplitude and brightness) but would not affect aliasing. Option D (decreasing the PRF) would actually worsen the aliasing by lowering the Nyquist limit.
Therefore, the correct choice is to increase the Doppler PRF.

NEW QUESTION # 26
Which system control adjusts amplification of signals as a function of depth?
  • A. Output power
  • B. Transmit focus
  • C. Time gain compensation
  • D. Reject
Answer: C
Explanation:
Time Gain Compensation (TGC), also known as Depth Gain Compensation (DGC), is used to adjust the amplification of ultrasound signals based on their depth. As ultrasound waves travel deeper into the tissue, they become weaker due to attenuation. TGC compensates for this attenuation by progressively increasing the gain for deeper echoes, ensuring that structures at different depths appear with similar brightness on the ultrasound image. This function is critical for creating a uniform image and accurately visualizing deeper anatomical structures.
American Registry for Diagnostic Medical Sonography (ARDMS). Sonography Principles and Instrumentation (SPI) Examination Review Guide.

NEW QUESTION # 27
......
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