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Table 2 The group systematic (Σ) and group random errors (σ) in mm in the orthogonal directions for the right kidney, left kidney, liver, and spleen and in CC direction for the diaphragm

From: Abdominal organ position variation in children during image-guided radiotherapy

(mm) Right Kidney Left Kidney Liver Spleen Right Diaphragm Left Diaphragm
LR CC AP LR CC AP LR CC AP LR CC AP CC CC
Group mean −0.6 0.7 −0.4 0.4 0.4 −0.4 0.4 −0.1 1.0 0.8 0.8 0.0 1.2 1.8
Σ 1.4 2.8 0.9 1.1 3.3 1.3 2.1 3.4 2.7 2.2 3.5 2.7 3.0 3.4
σ 1.6 2.2 2.4 1.3 2.9 1.4 1.8 2.8 1.9 2.8 3.0 2.7 3.6 3.4
  1. Abbreviations: LR left–right, CC cranial–caudal, AP anterior–posterior