ARDMS (American Registry for Diagnostic Medical Sonography) Practice Test

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Prepare for the ARDMS Sonography Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Which action will NOT increase (or improve) temporal resolution?

Increase the imaging depth.
Decrease the number of focal zones.
Use a sector size that is narrow.
Use a low line density.

The correct answer is: Increase the imaging depth.

Increasing the imaging depth will not improve temporal resolution. Temporal resolution refers to the ability of an imaging system to display dynamic events in real-time with clarity and speed. By increasing the imaging depth, more tissue needs to be penetrated by the ultrasound beam before returning an image, which ultimately delays the visualization of structures and decreases temporal resolution. Therefore, increasing the imaging depth negatively impacts temporal resolution. In contrast, the other options directly influence temporal resolution: - Decreasing the number of focal zones can improve temporal resolution by focusing the ultrasound beam more directly. - Using a narrow sector size allows for a more focused beam and better temporal resolution. - Using a low line density helps in achieving faster frame rates and better temporal resolution as well.