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Table 1 Linear regression relationship between inter- and intra-fraction variation

From: Fiducial-based image-guided SBRT for pancreatic adenocarcinoma: Does inter-and intra-fraction treatment variation warrant adaptive therapy?

LR axis Mean abs. Intra-fraction and mean abs. Inter-fraction shift (p = 0.1228, r = 0.288)

SI axis Mean abs. Intra-fraction = 0.13 × (mean abs. Inter-fraction shift) + 1.18 (p = 0.0262, r = 0.41)

AP axis Mean abs. Intra-fraction = 0.28 × (mean abs. Inter-fraction shift) + 1.17 (p = 0.001, r = 0.57)

Vector Mean abs. Intra-fraction = 0.25 × (mean abs. Inter-fraction shift) + 2.27 (p = 0.018, r = 0.55)

  1. Abs. = absolute
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Radiation Oncology

ISSN: 1748-717X

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