CSC CSC Diagnostic Imaging & Procedures 2

Question 1

What does a wall motion score index (WMSI) of 1.0 indicate in echocardiography?

Accepted Answer

Normal wall motion throughout

Answer

Severely abnormal wall motion

Answer

Moderately reduced function

Answer

Akinesis in all segments

Question 2

In cardiac MRI, late gadolinium enhancement (LGE) identifies:

Accepted Answer

Myocardial fibrosis or scar tissue

Answer

Areas of active inflammation only

Answer

Normal myocardial perfusion

Answer

Valvular regurgitation volumes

Question 3

The modified Bernoulli equation (ΔP = 4V²) is used in echo to estimate:

Accepted Answer

Pressure gradients across valves or defects

Answer

Cardiac output

Answer

Ejection fraction

Answer

Myocardial oxygen demand

Question 4

Which imaging modality is considered the gold standard for assessing left ventricular volumes and ejection fraction?

Accepted Answer

Cardiac MRI

Answer

2D transthoracic echocardiography

Answer

Cardiac CT angiography

Answer

Nuclear perfusion imaging

Question 5

Fractional flow reserve (FFR) is used during coronary angiography to assess:

Accepted Answer

Hemodynamic significance of coronary stenosis

Answer

Degree of calcification in coronary arteries

Answer

Left ventricular systolic function

Answer

Presence of coronary artery dissection

Question 6

Right heart catheterization measures all of the following EXCEPT:

Accepted Answer

Coronary artery stenosis severity

Answer

Pulmonary artery pressure

Answer

Pulmonary capillary wedge pressure

Answer

Cardiac output by thermodilution