X-rays

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  • Created by: tazor
  • Created on: 11-04-16 20:35
Who discovered X-rays
Wilhelm Röntgen
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What is the simple equation for intensity
I=P/A
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What is the unit of intensity
Wm^-2
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What is the wavelength of x-rays
0.01 - 10 nanometers
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What is the frequency of x-rays
3x10^16 - 3x10^19 Hz
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What is the voltage going through an x-ray tube
100-500 kV
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Define photoelectric effect
An interaction between an X-ray photon and an electron in which the electron is removed from the atom
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Define compton scattering
An interaction between an x-ray photon and an electron in which the photon is scattered with a longer wavelength
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Define pair production
A procces where an X-ray photon produces a an electron-positron pair
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What is attenuation measured in
m^-1
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What is most commonly used as a contrast medium
Barium
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Define a CAT scan
A technique where x-rays are used to image slices of the body in order to produce a computerised 3D image
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What is contrast media
Materials such as Barium that easily absorb X-Rays. It's used to reveal the outlines or edges of soft tissues in an X-ray image
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What is an image intensifier
A device used to change a low intensity X-ray image into a bright visual image
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What does CAT stand for?
Computerised Axial Tomography
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How can X-ray images be improved
Image intensifiers and contrast media
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Other cards in this set

Card 2

Front

What is the simple equation for intensity

Back

I=P/A

Card 3

Front

What is the unit of intensity

Back

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Card 4

Front

What is the wavelength of x-rays

Back

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Card 5

Front

What is the frequency of x-rays

Back

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