Interventional radiology

Question 1

What does DSA stand for?

Answer 1

Digital substraction angiography

Question 2

What is DSA?

Answer 2

Digital technique using XRAY, substract a pre-contrast image to the post-contrast result to get only the thing we are intersted in seeing

Question 3

Contrasts used in DSA

Answer 3

• Iodine
• CO2 (for patients with severe renal failure)

Question 4

What is the seldinger technique?

Answer 4

Technique used for both vascular access (both venous and arterial)

Question 5

What is the most commonly chosen access in femoro-popliteal interventions?

Answer 5

The controlateral CFA (but can also use ipsilateral in some cases)

Question 6

Diagnostic catheter diameter

Answer 6

1F = 1/3mm

Question 7

What does PTA stand for?

Answer 7

Percutaneous transluminal angioplasty

Question 8

What is PTA?

Answer 8

using a balloon to dilate the area where there is stenosis of an artery

Question 9

When is subintimal angioplasty used?

Answer 9

When the stenosis is so bad, the wire can’t go through - we introduce the guidewire between intima and media

Question 10

What does EVAR stand for?

Answer 10

Aortic aneurysm endovascular repair

Question 11

Indications for EVAR

Answer 11

• Asymptomatic and aneurysm >5.5cm in diameter
• Symptomatic aneurysm
• Known or impending rupture

Question 12

Drugs used for thrombolysis

Answer 12

• Urokinase
• Recombinant tissue-type plasmogen activator

Question 13

When is coil embolization used?

Answer 13

• Tumor
• Bleeding
• Malformation, A-V fistula

Question 14

How do we do embolization of pseudoaneurysms?

Answer 14

Injection of thrombin under US guidance