Subject/radiographic contrast: kVp, attenuation & contrast media
The linear attenuation coefficient of tissue falls as photon energy (tube kVp) rises, so the beam becomes more penetrating. The photoelectric contribution falls steeply (approximately proportional to 1 over energy cubed), while Compton scatter falls slowly and dominates at higher energy; the total curve is highlighted.
Practice the Physics paper
FRCRX is a Part 1 Physics question bank: true/false items with explanations, timed mocks and topic analytics.