1
Q
What are the requirements of contrast
A
Suitable viscosity
Cost effective
Stable and not break down into toxic ions
Non toxic
Rapid elimination
Easy to administer
2
Q
Why is barium used
A
Non toxic
Naturally occurring
Relatively cheap
Inert
3
Q
What is flocculation
A
When small particles clump together
4
Q
Possible hazards of barium
A
Leakage into pleural or peritoneal spaces
Leakage into mediastinum
Pulmonary aspiration
Distal bowel obstruction
5
Q
What is osmolarity
A
Measurement of number of molecules and particles in a solution per kilogram of water
IDIT
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