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Transcript
Physics of Radiography
 [email protected]
 www.sciencewow.co.uk
Physics of Radiography
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Structure of an atom
Wave theory
Quantum theory of electromagnetic radiation
Physical properties of X-rays
X-ray spectra (continuous and emission line)
X-ray tube
Types of X-ray tube and power supplies
Compton scattering
Absorption process – matter & materials
Dosimetry
Physics of Radiography
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Structure of an atom
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Properties of sub-atomic particles
Structure of atom
Energy levels
Electron configuration
Physics of Radiography
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Wave theory
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Wave terminology
Wave equation to calculate frequency and
wavelength
Physics of Radiography
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Quantum theory of electromagnetic radiation
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Quantisation of energy
The photon
Wave particle duality
Physics of Radiography
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Physical properties of X-rays
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X-ray photon energies
Frequency & wavelength of X-rays
Physics of Radiography
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X-ray spectra (continuous and emission line)
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Electronic transitions
Line and continuous spectra
Effect on spectra of varying accelerating voltage
Maximum photon energy
Physics of Radiography
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X-ray tube
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Diagram of the x-ray tube
Calculate electron kinetic energy (J)
Convert J to eV
Physics of Radiography
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Types of X-ray tube and power supplies
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Power supply for electron tube
High anode-cathode voltage
Effect of high cathode current
Physics of Radiography
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Compton scattering
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Simple scattering
Compton scattering
Photoelectric effect
Pair production
Physics of Radiography
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Absorption process – matter & materials
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Material thickness
Different materials
Attenuation
Photographic image
Image quality
Image intensifiers
Physics of Radiography
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Dosimetry
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Absorbed dose, dose equivalent, effective dose
Units
ALARA principle