FRCR FRCR Interventional Radiology 3

Question 1

Cryoablation causes tissue destruction through:

Accepted Answer

Repeated freeze-thaw cycles causing intracellular ice crystal formation and membrane disruption

Answer

Cryoablation delivers compressed argon gas to generate temperatures below −40°C; ice crystal formation destroys cell membranes, and vascular stasis during thawing causes additional necrosis.

Question 2

Which artery is the standard access vessel for coronary angiography via the radial approach?

Accepted Answer

Radial artery

Answer

The transradial approach accesses the coronary circulation via the radial artery, offering lower access-site complication rates than the transfemoral approach.

Question 3

In vertebroplasty and kyphoplasty, which material is injected into the vertebral body?

Accepted Answer

Polymethylmethacrylate (PMMA) bone cement

Answer

PMMA cement is injected under fluoroscopic guidance to stabilize osteoporotic compression fractures and provide rapid pain relief through mechanical stabilization.

Question 4

The ankle-brachial index (ABI) value indicating severe peripheral arterial disease is:

Accepted Answer

Less than 0.4

Answer

An ABI below 0.4 indicates critical limb ischemia with severely compromised arterial perfusion, often associated with rest pain or tissue loss.

Question 5

Which embolic agent is used for emergency embolization of a traumatic splenic laceration in a hemodynamically stable patient?

Accepted Answer

Coils or Gelfoam (gelatin sponge)

Answer

Proximal splenic artery embolization with coils or Gelfoam reduces perfusion pressure to control hemorrhage while preserving splenic parenchyma via collateral flow.

FRCR - Fellow of the Royal College of Radiologists Practice Test

FRCR - Fellow of the Royal College of Radiologists Practice Test

FRCR FRCR Interventional Radiology 3