UTC Ultrasound Technologist Equipment Operation 2

Question 1

Which transducer type is best suited for imaging superficial structures such as the thyroid gland?

Accepted Answer

Linear array transducer

Answer

Linear array transducers operate at higher frequencies and provide excellent near-field resolution, making them ideal for superficial structures like the thyroid.

Question 2

What does the term 'acoustic impedance mismatch' primarily determine in diagnostic ultrasound?

Accepted Answer

The amount of sound reflected at tissue interfaces

Answer

Acoustic impedance mismatch between two tissues determines the proportion of sound energy that is reflected versus transmitted at their interface.

Question 3

During a real-time ultrasound exam, 'frame rate' refers to:

Accepted Answer

The number of complete images displayed per second

Answer

Frame rate is the number of complete B-mode images refreshed per second, and it is inversely related to depth and the number of focal zones.

Question 4

A sonographer increases the number of focal zones from 1 to 4. What is the most likely trade-off?

Accepted Answer

Decreased frame rate

Answer

Adding focal zones improves lateral resolution at multiple depths but requires more time per frame, reducing frame rate.

Question 5

Which artifact appears as a bright echogenic line with posterior reverberation echoes equally spaced behind a reflective surface?

Accepted Answer

Reverberation (A-line) artifact

Answer

Reverberation artifacts occur when sound bounces repeatedly between two highly reflective surfaces, producing equally spaced lines behind the interface.

(UTC) Ultrasound Technologist Certification Practice Test

(UTC) Ultrasound Technologist Certification Practice Test

UTC Ultrasound Technologist Equipment Operation 2