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Table 1 Translational displacements of AlignRT RTD and CBCT couch shifts

From: Initial clinical experience of surface guided stereotactic radiation therapy with open-face mask immobilization for improving setup accuracy: a retrospective study

  VRT (mm) LNG (mm) LAT (mm)
AlignRT CBCT AlignRT CBCT AlignRT CBCT
Median  − 0.1 0.4 0.2 0.1 0  − 0.2
Q1/Q3  − 0.6/0.2 0.1/0.7  − 0.3/0.5  − 0.5/0.7  − 0.4/0.4  − 0.4/0.1
Min/max  − 1.1/1  − 1.3/1.3  − 2.2/1.1  − 2.3/2.5  − 1/0.9  − 1.6/1.6
p value  < 0.01* 0.609 0.015
  1. *Level of statistical significance in this study: p value < 0.01