Echocardiogram Testing and Quality Assurance 3

Question 1

Which of the following is a key indicator that a transducer element has failed during QA testing?

Accepted Answer

A dark band or dropout artifact in the image

Answer

Failed transducer elements appear as dark vertical bands or dropout regions in the B-mode image because those elements no longer transmit or receive ultrasound.

Question 2

What does the term 'dynamic range' refer to in echocardiography system performance testing?

Accepted Answer

The ratio of the largest to smallest signal amplitudes the system can display

Answer

Dynamic range describes the span of echo signal amplitudes—from the weakest detectable to the strongest—that the system can display simultaneously without saturation or loss.

Question 3

A QA protocol requires checking 'slice thickness' (elevation resolution). Which phantom feature is used for this test?

Accepted Answer

Anechoic spherical targets at varying depths

Answer

Anechoic spherical cysts of known diameter at varying depths are used to assess slice thickness, because a thick beam slice causes fill-in artifact in small cysts.

Question 4

Which document should a sonographer consult to understand acceptable QA performance tolerances for a specific echocardiography unit?

Accepted Answer

The equipment manufacturer's service manual and QA specifications

Answer

The manufacturer's service manual and QA specifications define acceptable performance tolerances unique to each system model.

Question 5

What is the primary purpose of recording baseline QA measurements when a new echocardiography system is first installed?

Accepted Answer

To establish reference values for detecting future performance degradation

Answer

Baseline measurements at installation provide reference values so that future QA tests can identify whether performance has degraded over time.

(Echocardiogram) Certified Echocardiogram Technician Practice Test

(Echocardiogram) Certified Echocardiogram Technician Practice Test

Echocardiogram Testing and Quality Assurance 3