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Lessons for this topic haven’t been written yet. The objectives below show exactly what the syllabus expects, so you can plan with them in the meantime.
What Cambridge says you should be able to do, in our words. Codes are the topic number plus the objective’s position.
Explain that X-rays are produced when electrons bombard a metal target, and calculate the minimum wavelength of the X-rays produced from the accelerating p.d.
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Understand how X-rays are used to image internal body structures, including the meaning of the term contrast in X-ray imaging.
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Recall and use I = I₀e^(−μx) for the attenuation of X-rays in matter.
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Understand that computed tomography (CT) scanning builds a 3D image of an internal structure in two stages: many X-ray images of one section, taken from different angles, are combined into a 2D image of that section; this is then repeated along an axis and the 2D images of many sections are combined.
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