Radiation treatment

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X-rays, gamma rays and beta particles are all used in medicine to treat internal organs. X-rays are produced by firing electrons at a metal target and gamma rays are emitted by the nucleus of radioactive atoms.

X-ray images

Chest X-ray

Materials, including skin and bone, can absorb ionising radiation such as x-rays. The amount of absorption depends upon the thickness and density of the material. X-ray images rely on this feature to produce, for example, photographs of bones to check for fractures. X-rays mostly pass through skin and soft tissue, but they do not easily pass through bone. They cannot show muscles or any more detail than bone and soft materila eg skin

Uses of radiation in medicine


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