Scatter • How Radiology Works

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Technologists Guide to technical parameters.

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Important Scatter Factors to Know

Collimation: field of view or collimation setting (very important setting to monitor as a technologist for scatter)
kVp: The tube potential is a determining factor in patient scatter.
Air Gap: The distance between the patient and the detector can influence the scatter.
Thickness: The object thickness has significant impact on the measured x-ray scatter
Anti-scatter Grid: If scatter can not be reduced with other means anti-scatter grids can be used to preferentially stop scattered photons.
BUCKY Factor: Anti-scatter grids are used to boost the contrast but there is an associated dose penalty expressed as the Bucky Factor.

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