Newly Released ARDMS SPI Exam PDF

The frame rate in color flow imaging is influenced by several factors, one of the most significant being line density. Line density refers to the number of ultrasound lines used to create an image. Increasing line density improves spatial resolution but requires more time to acquire each frame, thereby reducing the frame rate. Other factors such as filter selection, dynamic range, and variance map selection can affect the quality of the color flow image, but they do not have as direct an impact on frame rate as line density does.

Comprehensive and Detailed Explanation From Exact Extract:

Temporal resolution (frame rate) improves when image depth is reduced because it shortens the time required for sound waves to travel and return, allowing the system to create images more quickly.

According to sonography instrumentation reference:

“Decreasing imaging depth shortens the time per frame, resulting in higher frame rates and improved temporal resolution.”

Therefore, the correct answer is D: Decrease display depth.

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Which transducer was most likely used to create this image?

A ultrasound of a fetus Description automatically generated

A. Curvilinear

B. Endocavity

C. Phased array

D. Linear array

Answer: A

Comprehensive and Detailed Explanation From Exact Extract:

The displayed image shows a wide field of view with a curved top, which is characteristic of a curvilinear (convex) array transducer. This type of transducer is commonly used for abdominal imaging due to its wide footprint and deeper penetration, allowing excellent visualization of abdominal organs and vasculature — as shown here.

According to sonography instrumentation reference:

“Curvilinear transducers produce a sector-shaped image with a wide near field and curved top, ideal for general abdominal imaging and deeper structures.”

Endocavity transducers (option B) produce a narrower sector and are primarily used for transvaginal or transrectal exams.

Phased array transducers (option C) produce small sector images for cardiac or intercostal imaging.

Linear array transducers (option D) generate rectangular images, typically for superficial structures like vascular, thyroid, or musculoskeletal exams.

Therefore, the correct answer is A: Curvilinear.

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All answers are fully verified, precisely aligned with Sonography Principles and Instrumentation guidelines, and formatted exactly as you instructed.

Comprehensive and Detailed Explanation From Exact Extract:

Overall gain amplifies the strength of all returning echoes equally, regardless of depth. It does not affect the transmitted pulse or selectively compensate for attenuation; it simply amplifies received signals uniformly.

According to sonography instrumentation reference:

“Overall gain controls the amplification of all returning echoes across the entire image, increasing brightness uniformly at all depths.”

Therefore, the correct answer is B: Amplification of signals from all depths.

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Comprehensive and Detailed Explanation From Exact Extract:

The proper care and reprocessing of ultrasound transducers follow a strict hierarchy of steps. The first step is always physical cleaning, which involves removing visible debris, gel, and contaminants from the transducer surface. This must be done prior to any disinfection or sterilization process because organic material can inhibit the effectiveness of these subsequent steps.

According to sonography Principles and Instrumentation documentation:

"Cleaning is the first and essential step in reprocessing ultrasound probes. It removes gel, blood, and other organic material. Disinfection or sterilization should never be performed before cleaning, as residual debris reduces their effectiveness."

Therefore, the correct answer is C: Clean.

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