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ARDMS SPI Exam Syllabus Topics:

Topic	Details
Topic 1	Perform Ultrasound Examinations: This topic discusses patient care, sonographic ergonomic techniques, echogenicity, reverberation, and potential bioeffects. It also discusses beam steering concepts, panoramic imaging, 3D 4D concepts, and contrast imaging concepts.
Topic 2	Manage Ultrasound Transducers: It delves into 2D array transducer concepts, 3D 4D transducer concepts, and nonimaging transducer concepts.
Topic 3	Optimize Sonographic Images: The topic focuses on optimization of axial resolution concepts, optimization of lateral resolution concepts, optimization of elevational resolution concepts, optimization of temporal resolution concepts, and magnification techniques.
Topic 4	Provide Clinical Safety & Quality Assurance: This topic covers universal infection control protocols, QA check on ultrasound machine, transducer integrity, ultrasound machine integrity, and statistical parameter concepts.
Topic 5	Apply Doppler Concepts: It discusses Doppler wall filter concepts, Doppler sample gate concepts, y color priority over gray scale concepts, and concepts related to color Doppler map. Furthermore, it discusses concepts to eliminate aliasing, continuous wave Doppler concepts, and color Doppler scale concepts.

ARDMS Sonography Principles and Instrumentation Sample Questions (Q105-Q110):

NEW QUESTION # 105
Which artifact results from decreased attenuation?

A. Comet tail
B. Reverberation
C. Enhancement
D. Ringdown

Answer: C

Explanation:
Enhancement is an artifact that results from decreased attenuation. When an ultrasound wave travels through a medium with lower attenuation compared to surrounding tissues, it loses less energy. Consequently, the structures located deeper than the low-attenuation medium appear brighter on the ultrasound image. This artifact is commonly observed behind fluid-filled structures, such as cysts or the urinary bladder, where the sound waves encounter minimal resistance and thus less attenuation.References:
* ARDMS Sonography Principles and Instrumentation guidelines
* "Diagnostic Ultrasound: Principles and Instruments" by Frederick W. Kremkau

NEW QUESTION # 106
Which machine setting could cause aliasing to occur?

A. Doppler scale too low
B. Doppler scale too high
C. Doppler gain too low
D. Doppler gain too high

Answer: A

Explanation:
Doppler Scale Too High: This would prevent aliasing but could result in loss of low-velocity signals.
Doppler Scale Too Low: When the scale is set too low, velocities exceed the Nyquist limit, resulting in aliasing where the Doppler signal wraps around the baseline.
Doppler Gain Too High: High gain may result in noise and overamplified signals but does not directly cause aliasing.
Doppler Gain Too Low: Low gain results in weak signal detection but does not cause aliasing.
Reference:
"Diagnostic Ultrasound: Principles and Instruments" by Frederick W. Kremkau ARDMS Sonography Principles and Instrumentation study materials

NEW QUESTION # 107
What is the primary reason lateral resolution varies at different depths?

A. Pulse length
B. Tissue texture
C. Acoustic impedance
D. Beam width

Answer: D

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Lateral resolution is determined by the beam width perpendicular to the ultrasound beam's axis. As depth increases, the beam width changes due to beam divergence after the focal point. Narrower beams (better focusing) provide improved lateral resolution at specific depths.
According to sonography instrumentation reference:
"Lateral resolution depends on the width of the ultrasound beam. The narrower the beam at a particular depth, the better the lateral resolution." Therefore, the correct answer is A: Beam width.
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NEW QUESTION # 108
Which factor does a string phantom evaluate?

A. Two-dimensional resolution
B. Intensity values
C. Slice thickness
D. Flow velocity

Answer: D

Explanation:
A string phantom is designed to evaluate the accuracy of Doppler ultrasound systems, specifically in measuring flow velocity. It consists of a moving string or filament that mimics blood flow within a vessel. By using this phantom, sonographers can assess how accurately the ultrasound system can detect and measure the speed of the moving target. This helps in calibrating and verifying the performance of Doppler systems, ensuring they provide accurate flow velocity readings in clinical practice.
Reference:
American Registry for Diagnostic Medical Sonography (ARDMS) Sonography Principles and Instrumentation study materials.
Textbook of Diagnostic Sonography by Hagen-Ansert, S. L. (latest edition).

NEW QUESTION # 109
Which color Doppler control allows for reassignment of red and blue to represent flow direction?

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

Answer: A

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.
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NEW QUESTION # 110
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Perfect SPI Exam Brain Dumps give you pass-guaranteed Study Materials - Pass4suresVCE

Free PDF SPI - Perfect Test Sonography Principles and Instrumentation Price

ARDMS SPI Exam Syllabus Topics:

ARDMS Sonography Principles and Instrumentation Sample Questions (Q105-Q110):

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