Bucky factor

Last revised by Dr Jeremy Jones on 20 Sep 2021

The Bucky factor is the ratio of radiation on the anti-scatter grid to the transmitted radiation.

Hence, the Bucky factor reflects the increased radiation dose required from anti-scatter grid use, as any increase in mAs proportionally increases dose.

The Bucky factor changes with:

  • change in kVp
  • change in grid ratio

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