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11 Cards in this Set
- Front
- Back
breaking radiation breaks because changes direction when interact with nucleus
• projectile electron (negative charge) comes under influence of the nucleus (electric Coulomb force) • projectile electron changes direction, varibly • change in direction causes bremsstrahlung x-ray photon production (conservation of momentum) |
bremstrlahlung radiation
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what constitutes 85% of x-ray photons?
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bremsstrahlung
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type of radiaton results when projectile eelctrol collides with a k-shell electron of the target material
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characteristic
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characteristic and bramstrulung
interaction between |
electron and x-ray
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Compton: (scatter) and
photoelectric effect: are interactions of what and what |
x-rays and matter
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____ (scatter) comes into patient and is misdirected
______ is when it is good and is completely absorbed |
Compton: (scatter) photoelectric effect:
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isotropically:
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leave x-ray tube in all directions
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equation of heat units:
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kVp by mAs (single phase only, x 1.4 for HF)
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cause by absorption and attenuation of x
x-rays coming off bump into the anode because some of x-ray is absorbed into anode itself: this means the beam towards patient will be weak or less intense (anode ) because some x-rays were absorbed. Cathode: more intense Intensity of the beam is non-uniform in the long axis of the tube |
anode heel effect
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how to decrease anode heel effect
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use longer focal fim distances
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Ripple effect:
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WANT LOW NUMBER
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