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ARDMS SPI Exam Syllabus Topics:

Topic
Details

Topic 1

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 2

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 3

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 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

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.

ARDMS Sonography Principles and Instrumentation Sample Questions (Q165-Q170):

NEW QUESTION # 165
Which transducer was most likely used to create this image?

A. Curvilinear
B. Endocavity
C. Linear array
D. Phased array

Answer: A

Explanation:
The image shown is typical of an abdominal ultrasound, which commonly utilizes a curvilinear transducer.
Curvilinear transducers have a wider field of view at depth, making them ideal for imaging large structures within the abdomen. These transducers emit a curved beam, allowing for better penetration and a broader field of view, which is necessary for comprehensive abdominal examinations. The curvature of the image, the wide field of view, and the depth of penetration all suggest the use of a curvilinear transducer.
American Registry for Diagnostic Medical Sonography (ARDMS). Sonography Principles and Instrumentation (SPI) Examination Review Guide.

NEW QUESTION # 166
Which color Doppler control allows for reassignment of red and blue to represent flow direction?

A. Color gain
B. Color threshold
C. Color invert
D. Color priority

Answer: C

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
In color Doppler imaging, the default color map assigns red and blue to represent flow direction relative to the transducer (usually red toward, blue away). The color invert control reverses this assignment.
According to sonography Principles and Instrumentation:
"The color invert control reverses the baseline of the color map, swapping red and blue assignments for flow direction." Color priority adjusts the overlay of color vs grayscale.
Color gain controls amplification of the Doppler signal.
Color threshold sets minimum amplitude to display color.
Therefore, the correct answer is D: Color invert.
-

NEW QUESTION # 167
How is an ultrasound image affected if several adjacent crystals of a linear array transducer are damaged?

A. Erratic beam steering and focusing
B. Vertical dark zone directly below the damaged elements
C. Loss of entire image
D. Horizontal zone of dropout

Answer: B

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
In linear array transducers, each element controls a vertical portion of the image. If adjacent elements fail, the result is a vertical dropout corresponding directly below the damaged crystals.
According to sonography instrumentation reference:
"Damage to specific elements in a linear array transducer results in vertical dropout directly beneath the malfunctioning crystals." Therefore, the correct answer is A: Vertical dark zone directly below the damaged elements.
-

NEW QUESTION # 168
Which control determines the amount of amplification occurring in the receiver?

A. Dynamic range
B. Persistence
C. Output power
D. Overall gain

Answer: D

Explanation:
Overall gain controls the amplification of all the received ultrasound signals uniformly. This adjustment affects the brightness of the entire image by increasing or decreasing the amplification of the echoes returning from all depths. It is a primary control for adjusting image brightness. The overall gain should be set to an appropriate level to ensure that the ultrasound image is neither too bright (over-gained) nor too dark (under- gained), allowing for optimal visualization of the anatomical structures.
American Registry for Diagnostic Medical Sonography (ARDMS). Sonography Principles and Instrumentation (SPI) Examination Review Guide.

NEW QUESTION # 169
Which factor causes posterior acoustic enhancement?

A. High-frequency transducer
B. Weakly attenuating structure
C. Strongly attenuating structure
D. Low-frequency transducer

Answer: B

Explanation:
* High-Frequency Transducer: These provide better resolution but do not directly cause posterior enhancement.
* Low-Frequency Transducer: These provide better penetration but are not the cause of posterior enhancement.
* Strongly Attenuating Structure: This would cause acoustic shadowing rather than enhancement.
* Weakly Attenuating Structure: Structures that attenuate the ultrasound beam less than the surrounding tissues allow more sound waves to pass through, resulting in increased brightness or "enhancement" behind the structure.
References:
"Ultrasound Physics and Instrumentation" by Frank Miele
ARDMS Sonography Principles and Instrumentation study materials

NEW QUESTION # 170
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