Physics A-Level
Comparison with X-ray, CT and MRI
What Comparison with X-ray, CT and MRI means in Physics A-Level, as defined for AQA.
Definition of Comparison with X-ray, CT and MRI
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Reference: AQA
Advantages over X-rays and CT include no ionising radiation, real-time moving images, low cost and portability; disadvantages include poorer resolution than X-ray or MRI and operator dependence.
Topics that use Comparison with X-ray, CT and MRI
- Ultrasound imaging (A-level only) (AQA A-Level)
Related terms
- A-scan
- Acoustic impedance
- Acoustic impedance and reflection
- Attenuation and penetration
- B-scan
- Coupling gel
- Intensity reflection coefficient
- Non-ionising safety
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