61707
Descrição
Mapa Mental por Samuel Marsh, atualizado more than 1 year ago
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Criado por Samuel Marsh
mais de 11 anos atrás
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X-rays
- Part of the electromagnetic spectrum.
- High frequency and very short wave length
- Their wavelength is
about the same size as
the diameter of an atom
- Their wavelength is
about the same size as
the diameter of an atom
- High frequency and very short wave length
- Properties
- Affect a photographic film
in the same way as light
- Are absorbed
by metal and bone
- Are transmitted
by healthy tissue
- Can be filled with contrast medium
that absorbs X-rays so that they
can be seen on an X-ray image
- Can be filled with contrast medium
that absorbs X-rays so that they
can be seen on an X-ray image
- Can be used to treat
cancerous tumours
at or near the body
surface
- Affect a photographic film
in the same way as light
- Are used to form images of
bones on photographic film
- Check for fractures
and dental problems
- Check for fractures
and dental problems
- Charge-coupled devices (CCDs)
- Used to form electronic images of X-rays
- Used to form electronic images of X-rays
- CT scanners
- Use X-rays to produce digital
images of a cross-section
through the body
- Use X-rays to produce digital
images of a cross-section
through the body
- Risks
- Cn cause ionisation
- Can damage living tissue
when they pass through it
- Cn cause ionisation
- Precautions
- Workers should
wear film badges
- Use lead screens
to shield them
from the X-rays
- Workers should
wear film badges
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