Increased beam filtration results in which of the following?

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Multiple Choice

Increased beam filtration results in which of the following?

Explanation:
Adding filtration removes the soft, low-energy photons from the beam, which raises the average photon energy (beam hardening). Higher-energy photons penetrate more uniformly and are less sensitive to differences in tissue density, so the differences in attenuation between tissues become smaller, reducing image contrast. So increased filtration both increases average energy and reduces contrast.

Adding filtration removes the soft, low-energy photons from the beam, which raises the average photon energy (beam hardening). Higher-energy photons penetrate more uniformly and are less sensitive to differences in tissue density, so the differences in attenuation between tissues become smaller, reducing image contrast. So increased filtration both increases average energy and reduces contrast.

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