Echocardiogram Testing and Quality Assurance 4

Question 1

When a QA test reveals that lateral resolution has significantly worsened compared to the baseline, the most appropriate initial action is:

Accepted Answer

Check transducer element integrity and contact the service engineer

Answer

Continue scanning and recheck next month

Answer

Increase acoustic output to compensate

Answer

Adjust the TGC controls

Question 2

Which QA test specifically evaluates the accuracy of M-mode measurements in an echocardiography system?

Accepted Answer

Distance accuracy test using known target spacings in a phantom

Answer

Lateral resolution test with a wire phantom

Answer

Color Doppler sensitivity test

Answer

Gray-scale uniformity test

Question 3

What is the significance of 'beam uniformity' testing in echocardiography QA?

Accepted Answer

It verifies that the ultrasound beam intensity is consistent across the transducer face

Answer

It measures the maximum velocity detectable by the Doppler system

Answer

It confirms the frame rate is adequate for cardiac imaging

Answer

It evaluates the harmonic imaging capability

Question 4

A hospital's echocardiography QA program requires logging all equipment malfunctions. What is the PRIMARY reason for maintaining this malfunction log?

Accepted Answer

To identify recurring problems and track equipment reliability over time

Answer

To justify purchasing new equipment

Answer

To satisfy patient privacy regulations

Answer

To document technician productivity

Question 5

Which of the following phantom characteristics is essential for evaluating tissue mimicking properties in echocardiography QA?

Accepted Answer

A phantom with a speed of sound of approximately 1540 m/s and realistic attenuation

Answer

A phantom made entirely of water

Answer

A phantom with no internal targets

Answer

A phantom that operates at room temperature only

Question 6

An echocardiography lab notices that image quality on one system appears noisier than usual. Which QA test would best quantify this change?

Accepted Answer

Signal-to-noise ratio measurement using a uniform phantom region

Answer

Doppler velocity accuracy test

Answer

Slice thickness evaluation

Answer

Frame rate measurement

Question 7

During QA, the technician finds that the maximum imaging depth has decreased significantly. Which component failure is MOST likely responsible?

Accepted Answer

Transmitter power output or transducer sensitivity reduction

Answer

Color Doppler processing unit

Answer

Image display monitor

Answer

Cine loop memory