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Summary
Patient doses from CT are high despite the relatively low number of examinations
The cost in dose is rewarded with extra diagnostic information
Techniques with existing equipment to reduce dose are the usual ones : justification and optimisation
The technology is advancing with systems that have automatic tube current control
- Improves the dose – image quality trade off
- Aids optimisation of technique
Slides from this talk are available at
www.impactscan.org