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

The AIUM 100-mm test object is a standard phantom used to assess spatial resolution, dead zone, and range accuracy in ultrasound systems.

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

The dead zone test identifies the minimum depth at which structures can be detected, which is limited by the transmit pulse length near the transducer face.

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

A flow phantom with known velocities is used to verify that the Doppler system accurately measures flow velocities within acceptable tolerances.

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

Non-uniform brightness across the image field typically results from improper time-gain compensation (TGC) settings or a malfunctioning TGC circuit.

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

Sensitivity in QA testing refers to the system's ability to detect low-level echo signals from small or deep targets at the limits of its imaging range.

(Echocardiogram) Certified Echocardiogram Technician Practice Test

(Echocardiogram) Certified Echocardiogram Technician Practice Test

Echocardiogram Testing and Quality Assurance 2