Table 2 Stereotactic body radiotherapy dosimetry and treatment details.
From: First Asian population study of stereotactic body radiation therapy for ventricular arrhythmias
Median target volume, cm3 (range) | |
Internal target volume (ITV) | 15.4 (4.6–40.9) |
Planning target volume (PTV) | 52.0 (14.4–92.6) |
Dosimetry analysis, median (range) | |
ITV, DMax (Gy) | 31.0 (29.7–32.3) |
ITV, D98% (Gy) | 24.8 (24.4–24.9) |
ITV, D95% (Gy) | 25.1 (25.0–25.5) |
ITV, D1% (Gy) | 30.2 (29.2–30.9) |
PTV, D98% (Gy) | 19.4 (19.0–19.7) |
PTV, D95% (Gy) | 20.1 (20.0–20.7) |
PTV, D1% (Gy) | 29.7 (29.0–30.3) |
Skin, Dmax (Gy) | 8.6 (4.9–13.9) |
Rib, Dmax (Gy) | 13.3 (5.8–25.5) |
Trachea and large bronchus, Dmax (Gy) | 1.4 (0.3–12.2) |
Spinal cord, Dmax (Gy) | 2.1 (1.3–4.6) |
Stomach, Dmax (Gy) | 3.4 (0.1–12.0) |
Esophagus, Dmax (Gy) | 5.2 (2.7–14.9) |
Coronary arteries, Dmax (Gy) | 19.0 (8.4–21.8) |
Heart minus PTV, > 16.0 Gy (cm3) | 12.7 (7.7–14.9) |
Lung, < 7.0 Gy (cm3) | 2403 (2041–3739) |
Liver, < 9.1 Gy (cm3) | 1120 (954–1828) |
SBRT energy, n (%) | |
6 MV FFF | 2 (28.5) |
10 MV FFF | 5 (71.5) |
Median SBRT employed partial arcs, number (range) | |
Total arcs | 10 (9–13) |
Coplanar arcs | 6 (5–9) |
Non-coplanar arcs | 4 (4–4) |
Median SBRT monitor units, MU (range) | 8898 (6431–12,092) |
Median SBRT treatment time, min (range) | 12.7 (9.2–17.3) |
