Physics (AS & A Level) · Oct / Nov 2016 · Paper 42 · Question 13
9702
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The question as text
Outline the principles of computed tomography (CT scanning). [6] [Total: 6]
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X-ray image of a (single) slice or cross-section through the patient. (M1)
Taken from different angles, or rotating X-ray beam. (A1)
Computer is used to form, process, build up or store the image. (B1)
2D image of the slice. (B1)
Repeated for many different neighbouring slices. (M1)
To build up a 3D image. (A1)
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