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ARDMS SPI Exam Syllabus Topics:

Topic	Details
Topic 1	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 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	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.
Topic 4	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 5	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.

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ARDMS SPI the latest exam practice questions and answers

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ARDMS Sonography Principles and Instrumentation Sample Questions (Q129-Q134):

NEW QUESTION # 129
Which change would lead to a reduction in frame rate?

A. Decreasing the sector width
B. Increasing the number of focal zones
C. Increasing the pulse repetition frequency (PRF)
D. Decreasing the depth

Answer: B

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Each additional focal zone requires extra transmissions per scan line, which slows down frame acquisition, thereby reducing the frame rate.
Principles and Instrumentation state:
"Increasing the number of focal zones lowers frame rate because multiple pulses are needed per scan line for each focal depth." Increasing PRF (B) allows faster data acquisition.
Decreasing depth (C) shortens round-trip time, increasing frame rate.
Decreasing sector width (D) reduces scan lines, increasing frame rate.

NEW QUESTION # 130
Which type of structure is best visualized with low persistence?

A. Dynamic
B. Echogenic
C. Static
D. Anechoic

Answer: A

Explanation:
Low persistence is best used for visualizing dynamic structures. Persistence is a setting that controls the averaging of successive frames to reduce noise and improve image quality. While high persistence can be beneficial for imaging static structures by providing a smoother image, it can blur or smear moving structures, making it difficult to visualize motion accurately. Low persistence settings allow for better temporal resolution and are therefore ideal for observing dynamic or moving structures such as the heart or blood flow.
Reference:
ARDMS Sonography Principles and Instrumentation (SPI) Exam Study Guide
"Diagnostic Ultrasound: Principles and Instruments" by Frederick W. Kremkau

NEW QUESTION # 131
What is an advantage of power Doppler over color Doppler?

A. Diminished flash artifact
B. Increased frame rate
C. Less angle dependent
D. Accurate velocity information

Answer: C

Explanation:
Power Doppler, unlike color Doppler, is less angle dependent because it detects the strength of the Doppler signal rather than the velocity of the blood flow. This means it is more sensitive to detecting low-velocity flow and flow in smaller vessels, regardless of the angle between the ultrasound beam and the flow direction. Color Doppler provides information on flow direction and velocity but is highly dependent on the angle of insonation, making it less reliable when the angle is suboptimal.
Reference:
ARDMS Sonography Principles and Instrumentation guidelines
Zwiebel, W. J., & Pellerito, J. S. (2017). Introduction to Vascular Ultrasonography. Elsevier.

NEW QUESTION # 132
According to Poiseuille's law, a change in which parameter would have the greatest influence on blood flow?

A. Vessel radius
B. Pressure gradient
C. Length of vessel
D. Viscosity of the fluid

Answer: A

Explanation:
According to Poiseuille's law, the flow rate of a fluid through a vessel is directly proportional to the fourth power of the vessel's radius. Therefore, a small change in the radius of the vessel has a much larger effect on blood flow compared to changes in pressure gradient, length of the vessel, or viscosity of the fluid.
ARDMS Sonography Principles and Instrumentation guidelines
Poiseuille's law in medical physics and hemodynamics literature.

NEW QUESTION # 133
What affects lateral resolution?

A. Frame rate
B. Focal zone
C. Duty factor
D. Spatial pulse length

Answer: B

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Lateral resolution depends on beam width, which is narrowest at the focal zone. Therefore, positioning the focal zone at the area of interest improves lateral resolution.
According to sonography instrumentation reference:
"Lateral resolution is primarily determined by beam width, which is narrowest at the focus. Optimal lateral resolution occurs at the focal zone." Therefore, the correct answer is B: Focal zone.
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NEW QUESTION # 134
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