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100% Pass Quiz 2026 ARDMS Unparalleled SPI: Sonography Principles and Instrumentation Exam SampleThe web-based SPI practice exam software is genuine, authentic, and real so feel free to start your practice instantly with SPI practice test. Spend no time, otherwise, you will pass on these fantastic opportunities. Start preparing for the SPI Exam by purchasing the most recent ARDMS SPI exam dumps. ARDMS Sonography Principles and Instrumentation Sample Questions (Q123-Q128):NEW QUESTION # 123
Which characteristic of ultrasound transmission is directly proportional to an increase in frequency?
A. Attenuation
B. Pulse duration
C. Wavelength
D. Penetration
Answer: A
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
As frequency increases, attenuation (energy loss due to absorption, scattering, and reflection) also increases.
This limits penetration but improves resolution for superficial structures.
According to sonography instrumentation reference:
"Attenuation increases directly with frequency, limiting penetration but enhancing resolution in superficial imaging." Therefore, the correct answer is C: Attenuation.
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NEW QUESTION # 124
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. Comet tail
C. Enhancement
D. Mirror image
Answer: C
NEW QUESTION # 125
Which target group in this image of a tissue-mimicking phantom is used for gray-scale evaluation?
A. Option A
B. Option D
C. Option C
D. Option B
Answer: C
Explanation:
* Gray-scale evaluation in a tissue-mimicking phantom involves assessing the uniformity and accuracy of the gray-scale representation of the tissues.
* Option C typically contains structures designed to test the machine's ability to accurately depict varying levels of echogenicity, which is essential for proper gray-scale evaluation.
* This area will have a range of echo intensities that help in determining the contrast resolution and the ability of the system to distinguish between different tissue types based on their gray-scale values.
References:
* ARDMS Sonography Principles and Instrumentation guidelines on tissue-mimicking phantoms and image quality evaluation.
NEW QUESTION # 126
What is the function of M-mode?
A. Create 3D images
B. Monitor blood flow
C. Visualize internal organs
D. Measure movement
Answer: D
Explanation:
M-mode (Motion mode) is used in ultrasound to measure and display the movement of structures over time.
This mode is particularly useful in cardiac imaging to assess the motion of heart walls and valves.
M-mode provides a one-dimensional view of the motion of tissues and is often used in conjunction with 2D imaging for a comprehensive assessment.
It is essential in evaluating the dynamic function of organs, especially in cardiology, where precise measurements of cardiac structures' movement are crucial. Reference:
ARDMS Sonography Principles and Instrumentation guidelines on modes of ultrasound imaging and their clinical applications.
NEW QUESTION # 127
How is the wavelength affected when switching from a 10 MHz transducer to a 5 MHz transducer?
A. Quadruples
B. Quarters
C. Halves
D. Doubles
Answer: D
Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Wavelength is inversely proportional to frequency according to the equation:
Wavelength (¦Ë) = Propagation speed (c) / Frequency (f)
If frequency decreases from 10 MHz to 5 MHz, the wavelength increases by a factor of 2 (doubles).
Principles and Instrumentation state:
"As frequency decreases, wavelength increases. Halving the frequency results in doubling the wavelength." Therefore, the correct answer is D: Doubles.
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NEW QUESTION # 128
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