Imaging of circulatory disturbances Flashcards
1
Q
Why would you use iodinated contrast?
A
- Differential X ray attenuation
- Inert
- Stable in selected body compartments
- Painless
- easy to use
- Cheap
2
Q
What are the problems with iodinated contrast?
A
Major reactions Renal dysfunction Disturbance of thyroid metabolism Seizures Pulmonary oedema
3
Q
How is catheter angiography done?
A
- vessel punctured and catheterised
- Sterile procedure
- Contrast injected using pump injector
- Rapid series of images acquired
4
Q
What do interventional radiologists do?
A
- Angiography/angioplasty
- Embolisation
- Catheter thrombolysis
- Drainage of abscesses
- Nephrostomy
- vertebroplasty
5
Q
what is used as a negative contrast agent?
A
Carbon Dioxide
6
Q
what are the problems with angioplasty/
A
- Occulsion
- Dissection
- Embolisation
- Rupture
- Infection
7
Q
Why is magnetic resonance angiography a good idea?
A
- Sensitive
- Specific
- No radiation
- No nephrontoxic contrast
8
Q
Why is magnetic resonance angiography a bad idea?
A
- very expensive
- Needs state of the art machinery
- High contrast cost
9
Q
Why is computed tomography angiogram a good idea?
A
- Gives information about other structures
- Sensitive
- IV injection
10
Q
Why is Computed tomography angiogram a bad idea?
A
- radiation dose
- High contrast dose
- expensive
