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USS vs CT (Disadvantages (Operator dependent, Difficult to interpret after…
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Ultrasound
Advantages
- cheap, portable
- no radiation
- good for detecting fluid (black on USS)
- real-time assessment
Disadvantages
- operator dependent
- difficult to interpret images after the fact
- resolution worse than CT
- doesn't work well on fat people
Common pathologies
- gallstones
- renal obstruction
- fluid collections (eg pleural effusion)
- vascular (DVT)
CT
Advantages
- better resolution
- 3D reconstructions enable different views
- images can be viewed by others
Disadvantage
- radiation dose
- not real-time
Common pathologies
- haemorrhagic stroke
- PE
- renal stones
- trauma
- cancer identification/staging