Radiation being absorbed by the body is called what?

Radiation being absorbed by the body is called what?

• A. Exposure
• B. Scattering
• C. Reflection
• D. Attenuation

Answer: (A)

When X-rays pass through the body, the tissue is subjected to radiation and energy is absorbed by the atoms in the tissues. This interaction—the body being exposed to radiation—defines exposure. It describes the condition of the body receiving and absorbing the X-ray energy, which is what forms the image. Scattering is photons changing direction after interacting with matter, not the absorption itself. Reflection isn’t a primary factor in diagnostic radiology, and attenuation is the overall reduction in beam intensity due to both absorption and scattering, a broader concept than the absorption alone.

When X-rays pass through the body, the tissue is subjected to radiation and energy is absorbed by the atoms in the tissues. This interaction—the body being exposed to radiation—defines exposure. It describes the condition of the body receiving and absorbing the X-ray energy, which is what forms the image. Scattering is photons changing direction after interacting with matter, not the absorption itself. Reflection isn’t a primary factor in diagnostic radiology, and attenuation is the overall reduction in beam intensity due to both absorption and scattering, a broader concept than the absorption alone.