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Table 3 Differences of correction vectors: Distributions of the distances between the target points if different IGRT correction strategies are applied (each fraction of all patients contributes equally)

From: The frequency of re-planning and its variability dependent on the modification of the re-planning criteria and IGRT correction strategy in head and neck IMRT

  Min 25% Quartile Median 75% Quartile Max
RIR_box_small vs. RIR_box_large [mm] 0.0 1.4 2.2 3.0 7.0
RIR_box_large vs. DIR_fit [mm] 0.0 1.3 2.2 3.0 5.9
DIR_fit vs. RIR_box_small [mm] 0.0 1.5 2.5 3.7 7.9