From: Implementation of single-breath-hold cone beam CT guided hypofraction radiotherapy for lung cancer
The vertebral bone uncertainties | The tumor position reproducibility | The change in the tumor position | |||||||
---|---|---|---|---|---|---|---|---|---|
ML | CC | AP | ML | CC | AP | ML | CC | AP | |
Pre-correction CBCT | |||||||||
Σ | 4.2 | 5.5 | 3.4 | 4.5 | 5.1 | 4.0 | 2.4 | 4.0 | 2.7 |
σ | 4.5 | 5.0 | 4.9 | 2.6 | 4.8 | 3.6 | 3.1 | 4.7 | 4.1 |
SM | 14.2 | 18.0 | 12.6 | 13.5 | 16.8 | 13.0 | 8.6 | 13.8 | 10.3 |
Second CBCT | |||||||||
Σ | 2.5 | 3.3 | 2.7 | 1.1 | 1.7 | 1.1 | 2.3 | 3.4 | 2.5 |
σ | 2.4 | 3.7 | 3.2 | 1.7 | 2.9 | 2.2 | 1.9 | 4.1 | 2.8 |
SM | 8.2 | 11.3 | 9.4 | 4.3 | 6.6 | 4.6 | 7.3 | 12.0 | 8.5 |
Third CBCT | |||||||||
Σ | 1.7 | 4.4 | 3.2 | 1.2 | 2.0 | 1.4 | 2.2 | 4.1 | 3.1 |
σ | 1.6 | 3.6 | 3.4 | 1.9 | 2.8 | 2.7 | 2.0 | 4.4 | 3.3 |
SM | 5.5 | 14.1 | 10.9 | 4.7 | 7.4 | 5.7 | 7.2 | 13.9 | 10.4 |