FREE ARDMS SPI MCQ Questions and Answers

Question 1

Which display mode shows information about a moving reflector over time?

Accepted Answer

M-mode

Answer

M-mode, or Motion mode, displays a single scan line over time. The horizontal axis represents time, and the vertical axis represents depth, showing the movement of structures along that specific line. This display mode is ideal for visualizing and quantifying motion, such as cardiac wall movement or fetal heart rate, by tracking changes in reflector position over time.

Question 2

The phrase that best expresses this is "amplifying image contrast directly at structure boundaries"

Accepted Answer

Edge enhancement

Answer

Edge enhancement is a post-processing technique designed to improve the visual clarity of anatomical structures. It works by selectively amplifying the contrast at the boundaries between different tissues or structures, making the edges appear sharper and more defined. This process enhances the perception of detail without altering the raw data.

Question 3

Using electrical steering technology, spatial compounding can:

Accepted Answer

Decrease speckle artifact

Answer

Spatial compounding acquires multiple scan lines from different angles using electrical steering and then averages them to create a single composite image. By viewing structures from various perspectives, random noise and speckle artifacts, which are angle-dependent, are significantly reduced. This leads to a smoother image with improved contrast resolution and better visualization of tissue textures.

Question 4

The following are examples of technologies that use extended sound pulses with a broad frequency range to enhance image quality and penetration:

Accepted Answer

Coded excitation

Answer

Coded excitation is an advanced technology that uses a complex, encoded sequence of sound pulses instead of a single short pulse. This technique broadens the frequency spectrum of the transmitted signal and significantly improves the signal-to-noise ratio. The result is enhanced image quality, better penetration, and improved axial resolution, particularly beneficial for imaging deeper structures.

Question 5

The easiest way to characterize harmonics produced during reflection and requiring the utilization of microbubbles is:

Accepted Answer

Contrast harmonics

Answer

Contrast harmonics are specifically generated when ultrasound microbubble contrast agents oscillate non-linearly in response to the incident sound wave. These microbubbles, when reflecting sound, produce harmonic frequencies that are distinct from those generated by tissue. This phenomenon is utilized to enhance the visualization of blood flow and perfusion in contrast-enhanced ultrasound imaging.

ARDMS SPI - ARDMS Sonography Principles and Instrumentation Practice Test

ARDMS SPI - ARDMS Sonography Principles and Instrumentation Practice Test

FREE ARDMS SPI MCQ Questions and Answers