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 |