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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

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

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

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 (Q23-Q28):

NEW QUESTION # 23
Which artifact displays reflectors more shallow than their actual position?

A. Mirror image
B. Ring-down
C. Section thickness
D. Range ambiguity

Answer: D

Explanation:
Range ambiguity artifact occurs when echoes from one pulse are received after the next pulse has been emitted, leading to the incorrect placement of echoes at shallower depths than their true location. This artifact typically happens when the PRF is set too high, causing the ultrasound system to interpret delayed echoes as coming from the current pulse rather than the previous one. This results in reflectors appearing closer to the transducer than they actually are.
References:
ARDMS Sonography Principles & Instrumentation Guidelines
Kremkau FW. Sonography Principles and Instruments. 9th ed. Philadelphia, PA: Elsevier; 2016.

NEW QUESTION # 24
What is assessed with power Doppler?

A. Viscosity
B. Velocity of flow
C. Presence of flow
D. Laminar flow

Answer: C

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Power Doppler detects the strength (amplitude) of returning Doppler signals, which reflects the presence of flow regardless of direction or velocity. It is more sensitive to low-velocity flow and is less angle-dependent than conventional color Doppler.
Principles and Instrumentation state:
"Power Doppler displays the amplitude of Doppler shifts, representing the presence of flow. It does not display direction or velocity."
* Laminar flow (A) and velocity (C) are not specifically measured by power Doppler.
* Viscosity (D) cannot be assessed by Doppler ultrasound.
Therefore, the correct answer is B: Presence of flow.
-

NEW QUESTION # 25
What is the primary reason lateral resolution varies at different depths?

A. Acoustic impedance
B. Pulse length
C. Tissue texture
D. Beam width

Answer: D

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Lateral resolution is determined by the beam width perpendicular to the ultrasound beam's axis. As depth increases, the beam width changes due to beam divergence after the focal point. Narrower beams (better focusing) provide improved lateral resolution at specific depths.
According to sonography instrumentation reference:
"Lateral resolution depends on the width of the ultrasound beam. The narrower the beam at a particular depth, the better the lateral resolution." Therefore, the correct answer is A: Beam width.
-

NEW QUESTION # 26
What is effected by increasing the color scale?

A. The color box width decreases
B. The Nyquist limit is increased
C. The color priority decreases
D. More colors are displayed

Answer: B

Explanation:
The Nyquist limit, which is the maximum detectable velocity before aliasing occurs, is directly related to the pulse repetition frequency (PRF). Increasing the color scale on the ultrasound machine effectively increases the PRF. When the PRF is increased, the Nyquist limit is also increased, allowing for the measurement of higher velocities without aliasing.
ARDMS Sonography Principles and Instrumentation guidelines
Kremkau, F. W. (2015). Diagnostic Ultrasound: Principles and Instruments. Elsevier.

NEW QUESTION # 27
Which adjustment produced the change from waveform A to waveform B?
A close-up of a graph Description automatically generated

A. Increased wall filter
B. Decreased Doppler gain
C. Increased Doppler gain
D. Decreased wall filter

Answer: C

Explanation:
Comprehensive and Detailed Explanation From Exact Extract:
Comparing waveform A to waveform B:
* In image B, the Doppler spectral waveform is brighter, with stronger signal amplitude and more clearly visible Doppler shifts.
* This indicates that the Doppler gain was increased, amplifying the strength of the returning Doppler signals displayed on the spectral waveform.
According to official sonography Principles and Instrumentation:
"Doppler gain controls the amplification of returning Doppler signals. Increasing the gain enhances signal amplitude, making weaker Doppler signals more visible."
* Decreasing gain (B) would have produced a dimmer waveform.
* Changes in wall filter (C and D) would primarily affect low-velocity signal display, not overall brightness.
Therefore, the correct answer is A: Increased Doppler gain.

NEW QUESTION # 28
......

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