Table 2.
Target volume definition and treatment details
| Variable | Patient 1 | Patient 2 | Patient 3 | Patient 4 | Patient 5 | Patient 6 |
|---|---|---|---|---|---|---|
| Target location | RV outflow tract | LV summit | LV summit | Thinned LV wall | LV scar | LV scar |
| Gross target volume, cm3 | 10.3 | 3.0 | 3.0 | 9.6 | 78.6 | 16.8 |
| PTV, cm3 | 45.1 | 17.5 | 26.8 | 108.3 | 246.8 | 59.3 |
| Respiratory motion control | None | None | None | DIBH | CPAP | DIBH |
| PTV coverage, % | 90.0 | 95.0 | 95.0 | 95.0 | 95.0 | 95.0 |
| Dmax, Gy | 35.7 | 28.2 | 28.6 | 28.3 | 30.9 | 30.7 |
| Stereotactic body radiotherapy planning | 2-arc | 2-arc | 3-arc | 3-arc | 3-arc | 3-arc |
| Stereotactic body radiotherapy beam-on time, min | 4.6 | 4.0 | 2.6 | 15.3 | 3.3 | 17.5 |
| Total treatment time, min | 7.6 | 5.9 | 4.9 | 77.4 | 5.6 | 25.9 |
CPAP = continuous positive airway pressure; DIBH = deep inspiration breath-hold; Dmax = maximal dose within target volume; LV = left ventricular; PTV = planning target volume; RV = right ventricular.