What is scatter radiation?

Study for the Dental Radiology Foundation Chain and Physics Test. Enhance your skills with flashcards and multiple-choice questions, complete with hints and explanations. Prepare for your success!

Scatter radiation is the secondary radiation that results when photons from the primary X-ray beam interact with matter and are deflected from their original direction. In dental radiography, this happens as the beam strikes tissues and can be deflected by processes like Compton scattering (which also reduces the photon energy a bit) or Rayleigh scattering. The defining feature is that the photons change direction after interacting, rather than continuing straight or being completely absorbed. This distinguishes scatter from absorption (where photons are removed from the beam) and from the initial X-ray production process (Bremsstrahlung), which creates the primary beam rather than scatter.