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Couch for X-ray and electron therapy machine, England, 1955

The couch forms part of a ‘Linear Accelerator’: an X-ray apparatus used in cancer treatment. This couch example was the first of its type to operate above one million volts. It was used at St Bartholomew’s Hospital, pioneers in radiation therapy. Two different types of therapy are possible with the linear accelerator: X-ray or electron therapy. The machine targeted deep-seated tumours with a high intensity radiation beam (X-ray therapy) or treated superficial surface tumours with the electron beam (electron therapy). This caused minimal radiation to the surrounding tissue, preventing damage to healthy tissue. It was housed in a special basement treatment room over 12 metres below ground for maximum radiation protection. A moving floor meant patients could be positioned easily.

Object number:

1978-248 Pt3

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    Techniques and Technologies:


    Glossary: x-rays

    A wave of electromagnetic radiation that has high energy and short wavelength. It is able to pass through many materials, except those of high density such as metals or bones. Discovered in 1895 by William Roentgen.

    Glossary: radiomedicine

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    Glossary: patient's couch

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