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Table 2 The intrafractional and interfractional tumour displacements in groups A and B (mean ± standard deviation, range)

From: Assessment and validation of the internal gross tumour volume of gastroesophageal junction cancer during simultaneous integrated boost radiotherapy

 

Displacement

Direction

Proximal (mm)

Distal (mm)

Group A

Intrafraction

LR

2.25 ± 1.29 (0.3–5.5)

2.38 ± 1.8 (0.1–9.2)

AP

3.64 ± 1.82 (0.5–11.2)

3.33 ± 1.69 (0.3–6.4)

CC

7.78 ± 3.81 (0.5–21.5)

7.19 ± 2.84 (1.2–16.1)

Interfraction

LR

3.50 ± 3.85 (0–15.6)

8.13 ± 6.7 (0.3–28.5)

AP

2.31 ± 2.73 (0–13.0)

6.33 ± 4.73 (0.3–22.1)

CC

4.38 ± 4.28 (0–16.3)

4.13 ± 3.68 (0–15.6)

Group B

Interfraction

LR

3.70 ± 2.87 (0.1–11.2)

5.39 ± 3.76 (0–14.8)

AP

3.32 ± 3.12 (0.1–13.4)

4.43 ± 4.06 (0.2–20.2)

CC

4.79 ± 3.36 (0–14.1)

6.1 ± 3.96 (0.4–14.5)

  1. LR left–right, AP anterior–posterior, CC cranial–caudal