Table 3.
Dosimetric Characteristics of Heart, Left Anterior Descending Artery (LAD) and Lungs (Gy- Gray)
| Region | Parameter | Free breathing | Deep inspiratory breath hold | p-value | ||
|---|---|---|---|---|---|---|
| Mean±SD | Median (IQR) | Mean±SD | Median (IQR) | |||
| Heart | V5 | 37.38±12.77 | 33.5 (29.7, 46.6) | 37.40±22.19 | 31.5 (17.0, 56.3) | 0.776 |
| V10 | 17.87±6.23 | 16.9 (13.1, 21.7) | 14.26±14.31 | 8.9 (7.4, 16.3) | 0.053 | |
| V20 | 12.83±3.53 | 13 (10.5, 15.3) | 6.15±2.77 | 5.7 (4.0, 7.3) | 0.001 | |
| V25 | 11.90±3.46 | 12.0 (9.6, 14.4) | 5.17±2.37 | 4.7 (3.4, 6.1) | 0.001 | |
| Dmean | 8.69±1.65 | 8.9 (7.58, 9.75) | 5.73±1.41 | 5.82 (5.16, 6.06) | 0.001 | |
| LAD | Dmax | 51.68±1.65 | 51.34 (50.73, 52.31) | 46.91±9.90 | 49.16 (47.67, 51.23) | 0.006 |
| Dmean | 29.05±7.38 | 29.08 (22.90, 32.93) | 20.95±7.65 | 23.10 (12.22, 25.97) | 0.001 | |
| Left lung | V5 | 56.32±9.93 | 54.9 (49.3, 58.2) | 58.31±11.49 | 56.1 (49.6, 67.4) | 0.394 |
| V10 | 40.04±6.14 | 39.9 (36.5, 42.9) | 38.86±6.48 | 37.2 (35.2, 44.1) | 0.307 | |
| V20 | 30.08±4.31 | 29.7 (27.0, 32.7) | 28.07±4.08 | 27.9 (25.8, 31.4) | 0.078 | |
| Right lung | V5 | 0.324±0.35 | 0.1 (0.0, 0.6) | 0.95±3.14 | 0.1 (0.0, 0.3) | 0.096 |