UTC Quality Assurance & Standards 3

Question 1

Which material property of a tissue-mimicking phantom most closely approximates soft tissue for ultrasound QA testing?

Accepted Answer

Speed of sound approximately 1540 m/s and attenuation of 0.5 dB/cm/MHz

Answer

Tissue-mimicking phantoms are designed with a speed of sound near 1540 m/s and attenuation around 0.5 dB/cm/MHz to simulate soft tissue.

Question 2

In color Doppler QA, a flow phantom is used primarily to evaluate:

Accepted Answer

Velocity accuracy, color fill, and aliasing thresholds

Answer

A Doppler flow phantom allows assessment of velocity accuracy, color fill uniformity, and the velocity at which aliasing occurs.

Question 3

What is the purpose of the AIUM 100 mm test object in ultrasound quality assurance?

Accepted Answer

Providing a standardized target for evaluating multiple performance parameters including distance accuracy and resolution

Answer

The AIUM 100 mm test object contains multiple pin groups that allow evaluation of distance accuracy, axial/lateral resolution, and dead zone.

Question 4

When should a baseline QA assessment be performed on a new ultrasound system?

Accepted Answer

Before or immediately upon clinical commissioning

Answer

A baseline QA assessment must be performed before or immediately upon commissioning a new system to establish reference performance values.

Question 5

The ALARA principle in diagnostic ultrasound QA primarily directs sonographers to:

Accepted Answer

Keep acoustic output as low as reasonably achievable while maintaining diagnostic image quality

Answer

ALARA (As Low As Reasonably Achievable) means minimizing patient exposure to acoustic energy while still obtaining clinically adequate diagnostic images.

(UTC) Ultrasound Technologist Certification Practice Test

(UTC) Ultrasound Technologist Certification Practice Test

UTC Quality Assurance & Standards 3