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10 cards from this deck
Reduction in intensity by absorption and scattering as X-rays pass through material
Thickness, density, proton number, X-ray photon energy
I=I0e−μxI = I_0 e^{-\mu x}I=I0e−μx
Initial intensity of X-ray beam
Rate of energy loss per unit thickness; depends on density
μm=μρ\mu_m = \frac{\mu}{\rho}μm=ρμ
Material's composition only, not density
Thickness where X-ray intensity reduces to half
x1/2=ln2μx_{1/2} = \frac{\ln 2}{\mu}x1/2=μln2
Denser bone attenuates more, creating contrast
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