Echocardiogram Testing and Quality Assurance 2

Question 1

Which phantom is commonly used to evaluate spatial resolution in echocardiography systems?

Accepted Answer

AIUM 100-mm test object

Answer

ACR ultrasound phantom

Answer

CIRS Model 040 phantom

Answer

Gammex RMI phantom

Question 2

What is the purpose of performing a 'dead zone' test on an echocardiography transducer?

Accepted Answer

To measure the minimum depth at which targets can be resolved near the transducer face

Answer

To identify areas of signal dropout in cardiac imaging

Answer

To evaluate the far-field sensitivity of the beam

Answer

To assess lateral resolution at depth

Question 3

When performing quality control on a Doppler system, which parameter verifies the accuracy of velocity measurements?

Accepted Answer

Doppler frequency accuracy using a flow phantom

Answer

Axial resolution

Answer

Gray-scale uniformity

Answer

Focal zone depth

Question 4

A technician notices inconsistent brightness across the image field during a routine QA check. This most likely indicates a problem with:

Accepted Answer

Time-gain compensation uniformity

Answer

Doppler gain settings

Answer

PRF settings

Answer

Color flow mapping scale

Question 5

Which statement best describes the concept of 'sensitivity' in echocardiography QA testing?

Accepted Answer

The ability to detect small targets at maximum imaging depth

Answer

The accuracy of distance measurements on the display

Answer

The speed at which the system processes echo signals

Answer

The frequency range supported by the transducer

Question 6

During equipment QA, a technician finds that the system's calipers consistently measure a 10 cm distance as 10.5 cm. This error is classified as:

Accepted Answer

Systematic distance measurement error

Answer

Random error

Answer

Axial resolution failure

Answer

Near-field artifact

Question 7

How frequently should echocardiography equipment undergo comprehensive preventive maintenance according to best practice guidelines?

Accepted Answer

Annually or per manufacturer recommendation

Answer

Daily

Answer

Weekly

Answer

Only when a problem is detected