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ARDMS SPI Latest Dumps Sheet Exam Pass For Sure | Latest SPI Test Blueprint

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ARDMS SPI Exam Syllabus Topics:

Topic
Details

Topic 1

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 2

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 3

Manage Ultrasound Transducers: It delves into 2D array transducer concepts, 3D
4D transducer concepts, and nonimaging transducer concepts.

Topic 4

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.

Topic 5

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.

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Latest SPI Test Blueprint - SPI Latest Test Questions

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ARDMS Sonography Principles and Instrumentation Sample Questions (Q91-Q96):

NEW QUESTION # 91
Which change improves temporal resolution during color flow imaging?

A. Decrease packet size
B. Increase line density
C. Decrease transmit frequency
D. Increase field of view

Answer: A

Explanation:
Temporal resolution is improved by increasing the frame rate. One way to increase the frame rate is by decreasing the packet size (also known as ensemble length) in color Doppler imaging. The packet size refers to the number of pulses used to determine the Doppler shift at each location. A smaller packet size means fewer pulses are required, which allows for quicker data acquisition and thus a higher frame rate. Increasing the field of view, decreasing transmit frequency, and increasing line density would all decrease the frame rate and thus degrade temporal resolution.
References:
American Registry for Diagnostic Medical Sonography (ARDMS) Sonography Principles and Instrumentation guidelines.

NEW QUESTION # 92
What is the effect of an increased aperture in a linear array transducer?

A. Decreased temporal resolution
B. Shorter near-field length
C. Deeper focus
D. Improved axial resolution

Answer: C

Explanation:
The aperture of a transducer is the active area that emits and receives the ultrasound waves. In a linear array transducer, increasing the aperture (using more elements for transmission and reception) results in a deeper focus because the beam is more tightly focused over a longer distance. This improves lateral resolution at greater depths, as the ultrasound beam maintains a narrower width for a longer distance. It allows for better imaging of deeper structures without sacrificing resolution.
American Registry for Diagnostic Medical Sonography (ARDMS). Sonography Principles and Instrumentation (SPI) Examination Review Guide.

NEW QUESTION # 93
What method can be used to resolve aliasing artifact?

A. Using continuous wave Doppler ultrasound
B. Decreasing the pulse repetition frequency
C. Adjusting the output power
D. Using a higher frequency transducer

Answer: A

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Continuous wave (CW) Doppler can measure very high velocities without aliasing because it does not have a Nyquist limit like pulsed-wave Doppler.
Principles and Instrumentation state:
"Aliasing is eliminated in continuous wave Doppler since it does not rely on sampling and has no upper velocity limit."
* Output power (A) affects signal strength, not aliasing.
* Higher frequency (B) increases aliasing susceptibility.
* Decreasing PRF (C) actually worsens aliasing.
Therefore, the correct answer is D: Using continuous wave Doppler ultrasound.
-

NEW QUESTION # 94
What does this image demonstrate?
A ultrasound of a fetus Description automatically generated

A. Color inversion
B. Direction of flow
C. Color aliasing
D. Presence of flow

Answer: C

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
In the provided image, the color Doppler display shows a mixture of colors (typically red, yellow, and shades shifting abruptly), indicating that velocities have exceeded the Nyquist limit - the maximum detectable Doppler shift for the given pulse repetition frequency (PRF). This creates a color aliasing artifact.
According to the official sonography Principles and Instrumentation documentation:
"Color aliasing occurs when flow velocities exceed the Nyquist limit, causing a wrap-around of the color scale. This results in abrupt changes in color hue that do not accurately represent flow direction or velocity."
* Presence of flow (A) is correct but too general.
* Direction of flow (B) refers to color assignment but not to the artifact seen.
* Color inversion (D) inverts the color map but does not cause the abrupt color changes seen here.
The alternating, banded colors are classic for color aliasing, confirming that the correct answer is C: Color aliasing.

NEW QUESTION # 95
What is the term for an ultrasound system's ability to display low-level echoes?

A. Axial resolution
B. Sensitivity
C. Slice thickness
D. Lateral resolution

Answer: B

Explanation:
Sensitivity is the term for an ultrasound system's ability to display low-level echoes. It refers to the system's capacity to detect and accurately display weak echoes returning from tissues. High sensitivity allows the sonographer to visualize structures that produce faint echoes, such as small or low-contrast lesions. This parameter is critical for ensuring that subtle pathological changes are not missed during imaging. Reference:
ARDMS Sonography Principles and Instrumentation guidelines
"Sonography: Principles and Instruments" by Joan P. Baker and Marveen Craig

NEW QUESTION # 96
......

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