Advanced Physics for Brachytherapy 2018

Results from 20 HDR treatments + 2

Δr vs Δz (~300 Needles)

Projections and fits to Gaussian:

Δz: Mean = 0.34 mm 1SD = 2.0 mm

All needles in a single treatment shifted ∼ 70 mm

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Dosimeter drifted 70 mm

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Johansen J.G. et al. Brachy. 17 122-132 (2018)