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Radiography II > Contrast Media > Flashcards

Flashcards in Contrast Media Deck (10)
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1
Q

Reason for use

A

Visualisation of soft tissues

2
Q

Define positive cm (2)

Examples (2)

A

Contain elements of high atomic number
Radio-opaque (white)

Barium
Water soluble iodine compounds

3
Q

Define negative cm (2)

Examples (4)

A

Gases are radiolucent due to low density
Appear black

Room air
O2
CO2
N2O

4
Q

Indications for barium use (3)

Contraindication of use (1)

A

Gastrointestinal studies
Megaoesophagus
FBs

Suspected perforation

5
Q

Advantages of barium (3)

A

Non-toxic
Well-tolerated
Insoluble

6
Q

Disadvantages of barium (2)

A

Foreign body reaction if leaks

Pneumonia if aspirated

7
Q

Properties (2). and indications (2) of hypertonic water-soluble iodine

A

Hypertonic
High osmolarity/OP
- increased pressure through fluid drawing

Lower urinary tract
GIT

8
Q

Side effects of hypertonic iodine (4)

A

If given IV

  • hypotension
  • anaphylaxis

If given conscious

  • whining
  • retching
9
Q

Properties e of lower osmolar ionic water soluble iodine (2)

A

Fewer side effects and better GIT contrast than hypertonic

10
Q

What can lower osmolar non-ionic soluble iodine be used for and why

A

Myelography

- will not cause increase in pressure through fluid drawing