Diagnostic Ultrasound Transducers Quiz

Diagnostic ultrasound transducers generate a ________ of sound into the body.

• wave

• Doppler

• pulse

• frequency

The brightness of the dot corresponds to the ________ of the returning echo.

• angle

• strength

• speed

• location

A rectangular image display is seen when using a ________ transducer.

• vector

• sector

• convex

• linear

The location of each dot corresponds to the ________ of the echo to return.

• strength

• frequency

• time

• pulse

The method by which each pulse originates from the same starting point is called a ________ image.

• none are correct

• convex

• linear

• sector

Sonographic images are composed of many ________.

• scan lines

• crystals

• focal points

• frequency shifts

Echoes produced by ________ objects have different ________ than the pulses sent into the body.

• moving; frequencies

• stationary; frequencies

• stable; directions

• moving; echoes

Doppler ultrasound measures the movement of ________.

• both a and b

• none are correct

• tissue

• blood

Quantitative data are determined by which Doppler display?

• B-mode (gray-scale, or brightness) imaging

• Power imaging

• Color imaging

• Spectral imaging

Aspects of Operating Principle 2 include all of the following except _______:

• pulses of ultrasound are not sent in a one-to-one correspondence of pulse and displayed scan line.

• image quality is improved over Operating Principle 1.

• retrospective computational beam-forming determines the echo information.

• has been the underlying Operating Principle throughout the history of sonography.