Course book Advanced Treatment Planning 2018

Range uncertainty

Energy (statistic)

Adapted from Lomax T. (AAPM Summer School 2015)

Patient positioning (statistic)

Inherent CT uncertainties, e.g beam hardening, calibration (systematic)

Distal end RBE enhancements (systematic)

CT artifacts (systematic)

Changes in patient anatomy (systematic & statistic)

Increase of potential magnitude

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Estimated sum of range uncertainties: ~3 - 5% Range uncertainties are likely to be systematic.

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