Table 4.
Dosimetric Characteristics of Left Supraclavicular Region (SCL) and Internal Mammary Nodal (IMN) Region (Gy- Gray)
| Region | Parameter | Free breathing | Deep inspiratory breath hold | p-value | ||
|---|---|---|---|---|---|---|
| Mean±SD | Median (IQR) | Mean±SD | Median (IQR) | |||
| SCL | V90 | 93.75±2.85 | 94.30 (91.5, 96.7) | 95.67±2.09 | 96.20 (94.0, 97.2) | 0.017 |
| V95 | 86.16±7.62 | 88.50 (82.7, 90.9) | 88.77±5.94 | 88.90 (84.5, 93.6) | 0.307 | |
| V100 | 59.97±15.36 | 64.20 (53.8, 70.5) | 61.01±15.13 | 59.90 (50.2, 73.0) | 0.733 | |
| D2 | 53.22±0.76 | 53.09 (52.86,53.50) | 52.39±2.49 | 53.05 (52.62,53.59) | 0.363 | |
| D95 | 43.62±2.82 | 44.43 (42.57,45.92) | 47.61±8.45 | 45.72 (44.26,46.75) | 0.02 | |
| D98 | 38.03±4.54 | 38.16 (33.90,42.02) | 41.74±5.16 | 42.72 (38.12,43.83) | 0.027 | |
| IMN | V90 | 57.33±23.09 | 52.70 (49.3, 69.7) | 82.39 | 84.9 (69.5, 95.0) | 0.008 |
| V95 | 44.03±23.65 | 38.20 (20.5, 58.7) | 63.82 | 67.5 (50.0, 76.9) | 0.015 | |
| V100 | 25.42±19.72 | 21.80 (6.6,40.2) | 30.57 | 26.2 (13.0, 43.3) | 0.307 | |
| D2 | 52.59±2.11 | 52.66 (50.75,53.64) | 52.2 | 51.96 (51.45,53.35) | 0.82 | |
| D95 | 29.07±12.20 | 33.56 (17.82,35.20) | 37.19 | 43.17 (35.88,45.12) | 0.053 | |
| D98 | 25.87±11.35 | 30.35 (15.38,32.39) | 34.97 | 41.1 (30.18,43.89) | 0.031 | |
| Dmean | 42.51±7.03 | 44.23 (39.75,46.71) | 47.1 | 48.03 (46.32,48.77) | 0.041 | |