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Related SPI Exams | SPI PDF Question

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ARDMS SPI Exam Syllabus Topics:

Topic
Details

Topic 1

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 2

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 3

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

Topic 4

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 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 (Q148-Q153):

NEW QUESTION # 148
What is the benefit of using a wall filter?

A. Increases velocity range
B. Reduces aliasing
C. Removes low-frequency signals
D. Increases signal-to-noise ratio

Answer: C

Explanation:
A wall filter in Doppler ultrasound is designed to remove low-frequency signals that are often caused by tissue motion, vessel wall movement, or other forms of motion artifact. These low-frequency signals can clutter the Doppler spectrum, making it difficult to accurately interpret blood flow velocities. By filtering out these unwanted low-frequency signals, the wall filter helps to enhance the clarity of the Doppler signal, allowing for more accurate measurements of blood flow velocities.
Reference:
American Registry for Diagnostic Medical Sonography (ARDMS). Sonography Principles and Instrumentation (SPI) Examination Review Guide.

NEW QUESTION # 149
Which action would increase the frame rate?

A. Decreasing the number of focal zones
B. Increasing the number of lines per frame
C. Decreasing the logarithmic compression
D. Increasing the sector width

Answer: A

Explanation:
The frame rate in ultrasound imaging is influenced by several factors, including the number of focal zones.
Each focal zone requires additional transmission and reception cycles, thus decreasing the frame rate. By decreasing the number of focal zones, the system requires fewer cycles per frame, which increases the frame rate. This enhances the temporal resolution, making it easier to capture fast-moving structures in real-time imaging.
References:
ARDMS Sonography Principles & Instrumentation Guidelines
Hagen-Ansert SL. Textbook of Diagnostic Ultrasonography. 8th ed. St. Louis, MO: Mosby; 2017.

NEW QUESTION # 150
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. Enhancement
C. Mirror image
D. Comet tail

Answer: B

NEW QUESTION # 151
Which technique averages individual frames together to improve the image?

A. Harmonic imaging
B. Coded excitation
C. Persistence
D. Compression

Answer: C

Explanation:
Persistence is a technique used in ultrasound imaging that averages individual frames together to improve the overall image quality. This process helps to reduce noise and improve the signal-to-noise ratio, leading to clearer and more stable images. By averaging multiple frames, transient artifacts are minimized, and the continuity of structures is better visualized. Persistence is particularly useful in imaging static or slow-moving structures.References:
* ARDMS Sonography Principles and Instrumentation guidelines
* "Ultrasound Physics and Technology: How, Why and When" by M. Evans, C. Archer, and K. Weston

NEW QUESTION # 152
Which index is related to the likelihood of cavitation?

A. Mechanical
B. Thermal
C. Acoustical output
D. Temporal

Answer: A

Explanation:
The Mechanical Index (MI) is related to the likelihood of cavitation, which is the formation of gas bubbles in a liquid due to the low-pressure regions of the ultrasound wave. MI is a parameter that predicts the potential for mechanical bioeffects, including cavitation. A higher MI indicates a greater likelihood of cavitation occurring. It is calculated based on the peak negative pressure and the frequency of the ultrasound wave.
Reference:
ARDMS Sonography Principles and Instrumentation guidelines
Kremkau, F. W. (2015). Diagnostic Ultrasound: Principles and Instruments.

NEW QUESTION # 153
......

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