SPI DUMPS REVIEWS - SPI PASSLEADER REVIEW

SPI Dumps Reviews - SPI Passleader Review

SPI Dumps Reviews - SPI Passleader Review

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SPI Dumps Reviews - Sonography Principles and Instrumentation Realistic Passleader Review Free PDF

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ARDMS SPI Exam Syllabus Topics:

TopicDetails
Topic 1
  • Manage Ultrasound Transducers: It delves into 2D array transducer concepts, 3D
  • 4D transducer concepts, and nonimaging transducer concepts.
Topic 2
  • 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 3
  • 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 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
  • 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 (Q68-Q73):

NEW QUESTION # 68
A Doppler shift is 10,000 Hz at an angle of flow of 60 degrees. What is the Doppler shift at 0 degrees?

  • A. 5,000 Hz
  • B. 2,500 Hz
  • C. 10,000 Hz
  • D. 20,000 Hz

Answer: D

Explanation:
depends on the angle between the ultrasound beam and the direction of blood flow. The Doppler equation includes a cosine function of the angle of insonation (θ). At 60 degrees, the cosine is 0.5, and at 0 degrees (parallel to the flow), the cosine is 1. Thus, if the Doppler shift is 10,000 Hz at 60 degrees, it would double to 20,000 Hz at 0 degrees because the cosine of 0 degrees is 1 (cos(0°) = 1) and the cosine of 60 degrees is 0.5 (cos(60°) = 0.5). The formula is: Doppler shift at 0 degrees = Doppler shift at 60 degrees / cos(60 degrees) = 10,000 Hz / 0.5 = 20,000 Hz.
Reference: ARDMS Sonography Principles and Instrumentation (SPI) Review, Doppler Shift and Angle of Insonation section.


NEW QUESTION # 69
Which setting can be increased to correct for clutter artifact when using pulsed-wave Doppler?

  • A. Doppler gain
  • B. Wall filter
  • C. Pulse repetition frequency (PRF)
  • D. Sample volume

Answer: B

Explanation:
The wall filter, also known as the high-pass filter, is used in Doppler ultrasound to remove low-frequency signals, which are typically associated with clutter artifacts. Clutter artifacts can be caused by tissue motion or vessel wall movement, and they appear as low-frequency signals that can obscure the desired blood flow signals. By increasing the wall filter setting, these low-frequency signals are filtered out, thus reducing the clutter artifact and providing a clearer depiction of the blood flow.
Reference:
American Registry for Diagnostic Medical Sonography (ARDMS). Sonography Principles and Instrumentation (SPI) Examination Review Guide.


NEW QUESTION # 70
Which resolution capability is most affected by spatial pulse length?

  • A. Lateral
  • B. Axial
  • C. Temporal
  • D. Elevational

Answer: B

Explanation:
Axial resolution refers to the ability to distinguish two structures that are close to each other along the path of the ultrasound beam.
Spatial pulse length (SPL) is the distance over which one pulse occurs, and it directly affects axial resolution.
Shorter SPL improves axial resolution because it allows better differentiation of closely spaced structures.
The axial resolution is improved by increasing the frequency of the transducer, which shortens the wavelength and hence the SPL. Reference:
ARDMS Sonography Principles and Instrumentation guidelines on resolution parameters and their impact on image quality.


NEW QUESTION # 71
Which target group is used to evaluate transverse distance measurement accuracy in this tissue-mimicking phantom image?

  • A. Option A
  • B. Option C
  • C. Option D
  • D. Option B

Answer: C

Explanation:
In the tissue-mimicking phantom image, Option D (blue box) is used to evaluate transverse distance measurement accuracy. Phantoms are used to simulate human tissue and provide a standardized way to test the accuracy and precision of ultrasound machines. Transverse distance measurement accuracy is assessed by measuring known distances between targets in the phantom. The blue box (Option D) typically contains targets positioned to specifically test the accuracy of transverse measurements, ensuring that the ultrasound system provides reliable and precise distance readings.
Reference:
ARDMS Sonography Principles and Instrumentation (SPI) Exam Study Guide
"Quality Assurance for Ultrasound Imaging Systems" by AAPM (American Association of Physicists in Medicine)


NEW QUESTION # 72
What results from increasing the packet length when using color Doppler imaging?

  • A. Increased aliasing
  • B. Decreased penetration
  • C. Decreased frame rate
  • D. Increased color noise

Answer: C

Explanation:
Increasing the packet length in color Doppler imaging means increasing the number of pulses used to interrogate each scan line. This improves the accuracy of velocity measurements and sensitivity to low flow velocities but has the drawback of decreasing the frame rate. A longer packet length requires more time to acquire the necessary data, which reduces the number of frames that can be processed and displayed per second. Consequently, while color Doppler imaging becomes more precise, the temporal resolution (frame rate) decreases. Reference:
ARDMS Sonography Principles and Instrumentation guidelines
"Color Doppler, Power Doppler, and Spectral Doppler" by Michael J. Riccabona


NEW QUESTION # 73
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