Computed Tomography Test CT Anatomy and Clinical Applications 3

Question 1

What is the CT angiography finding that indicates aortic dissection?

Accepted Answer

An intimal flap dividing the aortic lumen into true and false channels

Answer

Diffuse aortic wall thickening

Answer

Focal outpouching of the aortic wall

Answer

Linear calcification within the aortic lumen

Question 2

On CT of the spine, which finding is most indicative of an acute compression fracture?

Accepted Answer

Loss of vertebral body height with band-like edema pattern on CT (marrow hyperdensity)

Answer

Posterior element involvement with kyphotic deformity

Answer

Normal cortical outline with disk space narrowing only

Answer

Lytic lesion with pathological fracture

Question 3

Which CT finding in the lung is most associated with malignancy in a solitary pulmonary nodule?

Accepted Answer

Spiculated (irregular/stellate) margins with pleural tethering

Answer

Smooth, well-defined margins

Answer

Satellite nodules

Answer

Central calcification in a popcorn pattern

Question 4

CT colonography (virtual colonoscopy) is performed with the patient in which position to evaluate both the colon positions?

Accepted Answer

Both supine and prone positions

Answer

Left lateral decubitus only

Answer

Trendelenburg position

Answer

Upright sitting position

Question 5

Which CT finding is the hallmark of carotid artery stenosis evaluation on CT angiography?

Accepted Answer

Percentage of luminal narrowing at the carotid bifurcation

Answer

Wall thickening only

Answer

Presence of contralateral plaques

Answer

Calcification of the aortic arch

Question 6

What is the most appropriate CT protocol to evaluate a patient presenting with acute stroke within the therapeutic window?

Accepted Answer

Non-contrast CT brain followed by CT perfusion and CT angiography

Answer

Contrast-enhanced CT brain only

Answer

CT of the chest and abdomen

Answer

Delayed post-contrast CT of the brain at 24 hours