From: Image quality of 4D in-treatment CBCT acquired during lung SBRT using FFF beam: a phantom study
Tube current: 20 mA | Tube current: 40 mA | |||||
---|---|---|---|---|---|---|
Absolute meana, standard deviation (range) | Pearson correlation | Absolute mean, standard deviation (range) | Pearson correlation | |||
r | p | r | p | |||
Localization error (mm): 0-phase | 0.5 ± 0.4 (− 0.6 to 1.0) | 0.20 | 0.45 | 0.3 ± 0.2 (0.0 to 0.6) | 0.36 | 0.16 |
Localization error (mm): 50-phase | 0.3 ± 0.4 (− 1.2 to 0.2) | − 0.25 | 0.35 | 0.1 ± 0.1 (− 0.3 to 0.1) | 0.62 | 0.01 |
Excursion error (mm) | − 0.9 ± 0.5 (− 1.6 to 0.2) | − 0.01 | 0.97 | − 0.7 ± 0.2 (− 1.1 to 0.2) | − 0.45 | 0.08 |