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Key Terms

This resource provides explanations of the key concepts encountered when exploring the See-through Body – the ‘basics’ that every student should understand.

Page links to Key Term definitions

  1. CT (computer-aided tomography)
  2. Disease
  3. EEG (electro-encephalography)
  4. Elasticity
  5. Electromagnetic spectrum
  6. Ionising radiation
  7. Mammography
  8. Medical imaging
  9. MRI (magnetic resonance imaging)
  10. Non-invasive
  11. Tumour
  12. Ultrasound
  13. Wavelength
  14. X-ray

List of Key Term definitions

  1. CT (computer-aided tomography) key term.

    1. CT (computer-aided tomography)

    Using X-rays to produce a focused image of specific structures within the body, while blurring details of other structures.

  2. Disease key term.

    2. Disease

    An unhealthy condition of the body or of a part of the body.

  3. EEG (electro-encephalography) key term.

    3. EEG (electro-encephalography)

    The process of recording the electrical activity of the brain.

  4. Elasticity key term.

    4. Elasticity

    The ability of a solid to return to its original shape or form after it has been stretched or compressed.

  5. Electromagnetic spectrum key term.

    5. Electromagnetic spectrum

    The complete range of electromagnetic radiation from the shortest waves (gamma rays) to the longest (radio waves).

  6. Ionising radiation key term.

    6. Ionising radiation

    Radiation that has enough energy to shift electrons out of atoms and so produce ions. This can cause damage to biological organisms like humans and can instigate DNA to mutate.

  7. Mammography key term.

    7. Mammography

    An examination of a breast that uses low dose X-rays.

  8. Medical imaging key term.

    8. Medical imaging

    Any technique (e.g. CT, EEG, MRI, ultrasound, X-ray) that uses the properties of living cells or tissues as a means for reflecting waves back to a visual detector for medical examination.

  9. MRI (magnetic resonance imaging) key term.

    9. MRI (magnetic resonance imaging)

    The use of a very strong magnetic field to line up the spin of hydrogen atoms. When radio waves (non-ionising radiation) are sent into the body in this magnetic field, they reflect off the hydrogen atoms and can be converted into an image of the tissues.

  10. Non-invasive key term.

    10. Non-invasive

    The technique used does not require the patient's body to be opened up by incision, or any samples taken.

  11. Tumour key term.

    11. Tumour

    Abnormal growth of tissue, usually out of control.

  12. Ultrasound key term.

    12. Ultrasound

    An imaging technique that reflects high-frequency sound waves off internal body parts to create images.

  13. Wavelength key term.

    13. Wavelength

    The distance between peaks or crests of a waves of light, heat, or other energy and the next peak or crest.

  14. X-ray key term.

    14. X-ray

    A photographic image produced using high frequency electromagnetic radiation to show internal parts of the body.

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