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[General] ARDMS SPI Examcollection Free Dumps | SPI Pass4sure Pass Guide

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【General】 ARDMS SPI Examcollection Free Dumps | SPI Pass4sure Pass Guide

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ARDMS SPI Exam Syllabus Topics:
TopicDetails
Topic 1
  • 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 2
  • 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 3
  • 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 4
  • 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 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 (Q150-Q155):NEW QUESTION # 150
Which of these modes has the highest duty factor?
  • A. Gray-scale
  • B. Pulsed wave Doppler
  • C. Continuous wave Doppler
  • D. Color flow Doppler
Answer: C
Explanation:
The duty factor is the fraction of time that the ultrasound system is actively transmitting a signal. Continuous wave (CW) Doppler has the highest duty factor because it continuously transmits and receives ultrasound waves. Unlike pulsed wave Doppler, which alternates between sending and receiving signals, CW Doppler does not have a listening period, resulting in a duty factor of nearly 100%. Therefore, CW Doppler has the highest duty factor among the modes listed.
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 # 151
Which target group is used to evaluate transverse distance measurement accuracy in this tissue-mimicking phantom image?

  • A. Option D
  • B. Option A
  • C. Option C
  • D. Option B
Answer: A
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.
References
* ARDMS Sonography Principles and Instrumentation (SPI) Exam Study Guide
* "Quality Assurance for Ultrasound Imaging Systems" by AAPM (American Association of Physicists in Medicine)

NEW QUESTION # 152
What is the benefit of using a wall filter?
  • A. Increases signal-to-noise ratio
  • B. Increases velocity range
  • C. Reduces aliasing
  • D. Removes low-frequency signals
Answer: D
Explanation:
A wall filter in Doppler ultrasound is designed to remove low-frequency signals that are often caused by tissue motion, vessel wall movement, or other forms of motion artifact. These low-frequency signals can clutter the Doppler spectrum, making it difficult to accurately interpret blood flow velocities. By filtering out these unwanted low-frequency signals, the wall filter helps to enhance the clarity of the Doppler signal, allowing for more accurate measurements of blood flow velocities.
American Registry for Diagnostic Medical Sonography (ARDMS). Sonography Principles and Instrumentation (SPI) Examination Review Guide.

NEW QUESTION # 153
Which artifact is seen as a result of an increase in echo amplitude in the tissue located distal to an anechoic structure?
  • A. Reverberation
  • B. Enhancement
  • C. Comet tail
  • D. Mirror image
Answer: B
Explanation:
Enhancement artifact occurs when an anechoic (or low-attenuation) structure, such as a cyst or fluid-filled structure, allows the ultrasound beam to pass through it with minimal attenuation. As a result, the tissues located distal to this anechoic structure appear brighter (increased echo amplitude) on the ultrasound image because the sound waves are less attenuated by the anechoic structure, leading to higher intensity echoes returning from the distal tissue. This increased brightness beyond the anechoic area is known as enhancement.
ARDMS Sonography Principles and Instrumentation guidelines
Kremkau, F. W. (2015). Diagnostic Ultrasound: Principles and Instruments. Elsevier.

NEW QUESTION # 154
In this image, which artifact is demonstrated?

  • A. Mirroring
  • B. Spectral broadening
  • C. Aliasing
  • D. Range ambiguity
Answer: A
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
The provided image shows a pulsed-wave Doppler spectral display. There are two identical Doppler spectra present - one on the top and an inverted one on the bottom - a classic appearance of the mirroring artifact.
Mirroring occurs when the strong Doppler signal reflects off a highly reflective interface and produces a duplicate signal on the opposite side of the baseline. The mirrored signal mimics the original spectral waveform but appears as a reversed, symmetric version.
According to official sonography Principles and Instrumentation references:
"Mirror image artifact in Doppler (also called cross-talk) occurs when a strong signal is incorrectly displayed on both sides of the baseline, producing a duplicated waveform." Aliasing would show wrap-around of velocities beyond the Nyquist limit, typically producing a cutoff and color reversal - not seen here.
Range ambiguity produces overlapping signals from different depths - also not applicable here.
Spectral broadening would result in widening of the Doppler spectral trace - which is not evident here.
Therefore, the correct answer is A: Mirroring.
-

NEW QUESTION # 155
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