ARDMS SPI Ultrasound System Controls and Knobology 3

Question 1

What is the primary purpose of adjusting the focal zone position on an ultrasound system?

Accepted Answer

To maximize lateral resolution at a specific depth

Answer

To increase overall image brightness

Answer

To reduce frame rate

Answer

To minimize shadowing artifact

Question 2

When multiple focal zones are used, what is the trade-off?

Accepted Answer

Improved resolution at multiple depths but reduced frame rate

Answer

Improved resolution throughout but increased depth

Answer

Reduced resolution at all depths

Answer

Increased frame rate

Question 3

The Doppler angle cursor should be aligned parallel to which structure during angle correction?

Accepted Answer

The direction of blood flow

Answer

The vessel wall perpendicular to flow

Answer

The transducer face

Answer

The beam axis

Question 4

Which mode uses a single, continuous ultrasound beam and is therefore not depth-selective?

Accepted Answer

Continuous wave Doppler

Answer

Pulsed wave Doppler

Answer

Color Doppler

Answer

B-mode

Question 5

What does the baseline control in spectral Doppler do?

Accepted Answer

Shifts the zero-velocity line up or down to prevent aliasing

Answer

Sets the maximum velocity scale

Answer

Adjusts the wall filter frequency

Answer

Changes the sweep speed of the spectral display

Question 6

Increasing sweep speed on the spectral Doppler display primarily affects:

Accepted Answer

The temporal display of waveforms (stretches or compresses them horizontally)

Answer

The velocity scale

Answer

The wall filter setting

Answer

The PRF