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Free PDF SPI - Pass-Sure Sonography Principles and Instrumentation Reliable Test Questions

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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

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 3

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 4

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

Topic 5

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.

ARDMS Sonography Principles and Instrumentation Sample Questions (Q191-Q196):

NEW QUESTION # 191
Which settings would produce the best temporal resolution?

A. Fewer focal zones and shallower depth
B. More focal zones and deeper depth
C. Fewer focal zones and deeper depth
D. More focal zones and shallower depth

Answer: A

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Temporal resolution refers to the system's ability to accurately track moving structures over time (i.e., frame rate). Temporal resolution improves when:
* The number of focal zones is reduced (fewer focal zones = faster frame rate).
* The imaging depth is reduced (shallower depth = faster frame rate).
According to sonography instrumentation references:
"Fewer focal zones and shallow imaging depth optimize temporal resolution by decreasing the time required for each frame, resulting in a higher frame rate." Therefore, the correct answer is C: Fewer focal zones and shallower depth.

NEW QUESTION # 192
Which is a method to reduce noise?

A. Increase frequency
B. Increase persistence
C. Decrease beam width
D. Decrease depth

Answer: B

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Persistence averages multiple frames to smooth out random noise fluctuations, reducing the appearance of noise in the image and improving image quality.
According to sonography instrumentation reference:
"Persistence reduces noise by averaging data from consecutive frames, improving signal-to-noise ratio and producing a smoother image." Therefore, the correct answer is D: Increase persistence.
-

NEW QUESTION # 193
Which factor causes posterior acoustic enhancement?

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

Answer: A

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 # 194
Which function is the purpose of the matching layer?

A. Convert acoustic to electrical energy
B. Allow sequential firing of elements
C. Reduce ringing of the crystals
D. Increase sound transmission

Answer: D

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
The matching layer is placed between the transducer's piezoelectric element and the patient's skin. Its primary function is to improve the transmission of sound energy into the body by reducing the acoustic impedance mismatch between the crystal and tissue, minimizing reflection at the transducer surface.
According to sonography instrumentation reference:
"The matching layer improves transmission of ultrasound energy by reducing impedance mismatch between the transducer and soft tissue, thus increasing the efficiency of sound energy transfer." Therefore, the correct answer is D: Increase sound transmission.
-

NEW QUESTION # 195
What affects lateral resolution?

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

Answer: C

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.
-

NEW QUESTION # 196
......

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