Ch 8 Review Questions

Basic Principles and Knobology

What imaging mode displays the returning echoes as dots of varying brightness?

B-mode

Which of the following Doppler techniques does not display an image and uses two crystals - one for sending and one for listening?

Continuous-wave doppler

Which control enhances the resolution of the image in a specific area

Both A and C

Transmit zone and focus

Which control allows for the adjustment of the brightness of the entire image?

Overall gain

Which control allows for the adjustment of the brightness of a specific depth within the image?

Time gain compensation

Which control varies the penetration of the echoes displayed on the monitor?

Depth

Which control would allow the sonographer to select the depth at which the velocity of the blood is measured within a selected vessel?

Pulsed-wave doppler

What term means toward the feet, away from the head?

Inferior

What term means located on the opposite of the body?

Contralateral

What term means closer to the attachment of an extremity?

Proximal

Which control relates to the amount of energy the transducer is emitting?

Acoustic power

The measurement tools utilized in sonography are termed?

Calipers

Which mode displays the strength of the returning echoes as spikes on a scale?

A-mode

What term is defined as away from the middle of midline of the body?

Lateral

What position is the patient in when he or she is lying on his or her back?

Supine

What term is described as toward the front of the body?

Anterior

What position is described as lying face down?

Prone

Which of the following is not a term for the reference point found on a transducer?

Spike

Which control allows the sonographer to rewind the image?

Cine loop

Which control allows the demonstration of motion of the structures along a single scan line?

M-mode