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Breakdown of the number of IMRT and VMAT retreatment plans by year of the original treatment plan.
| IMRT | VMAT | Total | |
|---|---|---|---|
| 2012 | 3 | 4 | 7 |
| 2013 | 8 | 7 | 15 |
| 2014 | 2 | 5 | 7 |
| 2015 | 0 | 6 | 6 |
| 2016 | 0 | 4 | 4 |
| 2017 | 0 | 1 | 1 |
| 2018 | 0 | 5 | 5 |
| 2019 | 0 | 2 | 2 |
IMRT: intensity‐modulated radiation therapy, VMAT: volumetric‐modulated radiation therapy.
