Radiology

Question 1

How does contrast appear on CT?

Answer 1

• Contrast contains idoine
• Iodine= dense
• Where contrast is, there will be opacification (bright white)

Question 2

State some different routes of contrast

Answer 2

• IV
• Oral
• Rectal
• Bladder

Question 3

State some different phases of contrast studies

Answer 3

• Non-contrast (no IV contrast)
• Systemic arterial (scan 35 secs after contrast)
• Portal venous (scan 70secs after contrast)
• Delayed (various. example can be if you want to visual renal pelvis, ureters etc… wait for 7-10mins)

Question 4

What pt factors must you consider if you are sending a pt for a CT scan with contrast?

Answer 4

• Allergies
• eGFR
• Venous access

Question 5

Which phase do we usually for acute abdominal CT?

Answer 5

Portal venous