From: Impact of positioning errors in the dosimetry of VMAT left-sided post mastectomy irradiation
Perturbation | CTVth a | CTVsv a | |||||||
---|---|---|---|---|---|---|---|---|---|
Shift | Direction | ∆D95b | ∆D98b | ∆D1c | ∆Dmd | ∆D95b | ∆D98b | ∆D1c | ∆Dmd |
3 mm | inferior | −0.4 ± 0.4 | − 0.5 ± 0.6 | 0.0 ± 0.1 | 0.0 ± 0.1 | − 0.4 ± 0.6 | − 0.5 ± 0.4 | 0.0 ± 0.1 | − 0.4 ± 0.4 |
superior | − 0.4 ± 0.5 | − 0.5 ± 0.4 | 0.0 ± 0.1 | − 0.2 ± 0.1 | − 0.3 ± 0.6 | − 0.7 ± 0.5 | 0.2 ± 0.1 | − 0.5 ± 0.6 | |
posterior | − 0.1 ± 0.3 | − 0.3 ± 0.3 | 0.0 ± 0.0 | − 0.2 ± 0.1 | −0.1 ± 0.6 | −0.5 ± 0.2 | 0.2 ± 0.1 | −0.3 ± 0.3 | |
right | −0.3 ± 0.2 | −0.5 ± 0.2 | 0.2 ± 0.2 | −0.4 ± 0.3 | −0.3 ± 0.1 | −0.5 ± 0.3 | 0.3 ± 0.6 | −0.4 ± 0.3 | |
left | − 1.1 ± 0.7 | −1.5 ± 0.9 | 0.4 ± 0.2 | 0.1 ± 0.2 | − 0.5 ± 0.2 | −0.6 ± 0.6 | 0.3 ± 0.4 | −0.3 ± 0.1 | |
anterior | − 1.4 ± 0.9 | −2.8 ± 1.8 | 0.2 ± 0.3 | − 0.2 ± 0.2 | −0.7 ± 0.6 | − 1.4 ± 0.6 | 0.4 ± 0.2 | − 0.5 ± 0.6 | |
5 mm | inferior | −1.0 ± 0.3 | −1.5 ± 0.7 | 0.1 ± 0.2 | 0.0 ± 0.1 | −1.6 ± 0.6 | − 2.3 ± 1.2 | 0.3 ± 0.1 | − 0.7 ± 0.4 |
superior | −1.8 ± 0.4 | − 3.2 ± 0.9 | 0.1 ± 0.2 | −0.4 ± 0.2 | − 1.1 ± 0.9 | −1.8 ± 1.0 | 0.2 ± 0.6 | − 0.7 ± 0.6 | |
posterior | −0.9 ± 0.4 | − 1.8 ± 0.6 | 0.1 ± 0.2 | − 0.4 ± 0.3 | −0.7 ± 0.3 | −0.7 ± 0.5 | 0.4 ± 0.3 | −0.6 ± 0.4 | |
right | −1.2 ± 0.7 | −1.5 ± 0.7 | 0.2 ± 0.5 | −0.6 ± 0.3 | −0.7 ± 0.4 | −0.8 ± 0.7 | 0.5 ± 0.3 | − 0.6 ± 0.5 | |
left | −2.8 ± 1.1 | −4.3 ± 0.9 | 0.8 ± 0.1 | 0.0 ± 0.3 | − 1.2 ± 0.6 | −2.3 ± 1.0 | 0.6 ± 0.3 | − 0.4 ± 0.2 | |
anterior | − 3.8 ± 1.8 | −5.7 ± 2.5 | 0.5 ± 0.3 | − 0.6 ± 0.4 | −2.4 ± 1.0 | −5.3 ± 1.1 | 0.6 ± 0.4 | − 0.7 ± 0.6 | |
10 mm | inferior | − 1.7 ± 0.5 | −2.2 ± 0.9 | 0.3 ± 0.3 | − 0.8 ± 0.2 | - 5.1 ± 2.3 | − 8.5 + 2.2 | 0.4 ± 0.2 | − 1.4 ± 0.7 |
superior | −6.6 ± 3.4 | −8-8 ± 3.1 | 0.2 ± 0.3 | − 1.3 ± 0.7 | − 4.1 ± 2.9 | − 5.9 ± 3.2 | 0.3 ± 0.1 | − 1.4 ± 0.3 | |
posterior | −4.9 ± 2.9 | −6.6 ± 2.9 | 0.4 ± 0.7 | − 1.5 ± 0.9 | −2.7 ± 1.4 | −4.5 ± 1.5 | 0.6 ± 0.2 | − 0.8 ± 0.4 | |
right | −4.6 ± 2.0 | −5.4 ± 2.6 | 0.2 ± 0.6 | − 1.8 ± 0.5 | −2.5 ± 0.9 | −4.7 ± 0.8 | 0.7 ± 0.1 | − 0.8 ± 0.4 | |
left | − 11.9 ± 5.2 | −16.1 ± 4.9 | 1.7 ± 0.3 | −2.5 ± 1.1 | − 8.3 ± 2.1 | − 11.6 ± 2.1 | 1.3 ± 0.4 | − 0.8 ± 0.3 | |
anterior | − 13.6 ± 4.5 | −17.6 ± 3.6 | 1.0 ± 0.3 | −3.2 ± 1.8 | − 11.1 ± 3.4 | −15.0 ± 4.5 | 1.0 ± 0.6 | −1.1 ± 0.4 |