Which pair of tissues has approximately the same radiographic density?

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Multiple Choice

Which pair of tissues has approximately the same radiographic density?

Explanation:
Radiographic density comes from how much X-ray is attenuated by a tissue, which depends on its density and composition. Water and muscle have very similar densities and electron content, so they attenuate X-rays to nearly the same extent. Fat, being less dense, attenuates X-rays less and therefore appears lighter (less radiographic density) than muscle or water. Bone, by contrast, attenuates much more. Because water and muscle attenuate similarly, they display approximately the same radiographic density, making that pair the best match.

Radiographic density comes from how much X-ray is attenuated by a tissue, which depends on its density and composition. Water and muscle have very similar densities and electron content, so they attenuate X-rays to nearly the same extent. Fat, being less dense, attenuates X-rays less and therefore appears lighter (less radiographic density) than muscle or water. Bone, by contrast, attenuates much more. Because water and muscle attenuate similarly, they display approximately the same radiographic density, making that pair the best match.

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