CVT CVT Cardiac Imaging & Nuclear Cardiology

Question 1

In nuclear cardiology, which radiopharmaceutical is most commonly used for myocardial perfusion imaging (MPI)?

Accepted Answer

Technetium-99m sestamibi (MIBI)

Answer

Tc-99m sestamibi is the most widely used agent for SPECT MPI because of its favorable dosimetry, higher photon energy, and ability to assess both perfusion and function.

Question 2

A 'fixed defect' on nuclear myocardial perfusion imaging indicates:

Accepted Answer

Infarction with non-viable myocardium (scar tissue)

Answer

A fixed (unchanging) perfusion defect present on both stress and rest images indicates infarcted, non-viable myocardial tissue.

Question 3

Which cardiac imaging modality provides the highest spatial resolution for coronary artery anatomy?

Accepted Answer

Cardiac CT angiography (CCTA)

Answer

Cardiac CT angiography provides sub-millimeter spatial resolution for direct visualization of coronary artery anatomy, stenoses, and atherosclerotic plaque.

Question 4

The Agatston score obtained from cardiac CT quantifies:

Accepted Answer

Coronary artery calcium burden as a marker of atherosclerosis

Answer

The Agatston (coronary artery calcium) score measures calcified atherosclerotic plaque burden in the coronary arteries, stratifying cardiovascular risk.

Question 5

What does LVEF stand for and what is the normal range in adults?

Accepted Answer

Left Ventricular Ejection Fraction; normal ≥55%

Answer

LVEF (Left Ventricular Ejection Fraction) is the percentage of blood ejected with each beat; a normal LVEF is ≥55%, indicating preserved systolic function.

(CVT) Cardiovascular Technologist Certification Practice Test

(CVT) Cardiovascular Technologist Certification Practice Test

CVT CVT Cardiac Imaging & Nuclear Cardiology