Table 2.
2D | 3D | |||||
---|---|---|---|---|---|---|
Parameter | Median (min–max) | Mean (SD) | Median (min–max) | Mean (SD) | P | |
IMLN volume (mL) | 6.8 (5–8.1) | 6.8 (0.82) | 5.7 (4.4–8.0) | 5.9 (0.97) | 0.411 | |
V45 (%) | 0 (0–27) | 2.2 (5.6) | 7.5 (0–96) | 15.8 (23.5) | 0.020 | |
D95 (cGy) | 196.6 (44–742) | 228.1 (136.6) | 533.5 (242–4609) | 753 (766) | < 0.0001 | |
Dmin (cGy) | 181.4 (37–369) | 1790 (80.2) | 470 (220–4414) | 639.5 (708) | < 0.0001 | |
Dmax (cGy) | 354.3 (108–5358) | 2827.7 (1981.5) | 5034 (756–5541) | 4198.3 (1499) | < 0.0001 | |
Dmean (cGy) | 508.25 (70–3245) | 793.5 (772.6) | 1811.5 (438–5295) | 2064.2 (1331) | < 0.0001 | |
V25 (%) | 0.35 (0–53.7) | 7.8 (13.8) | 27.6 (0–99.6) | 31.9 (29.8) | < 0.0001 | |
D50 (cGy) | 350.8 (73–3430) | 619.7 (738.9) | 1193 (50-5332) | 1746.7 (1459.5) | < 0.0001 |
IMLN, Internal mammary lymph nodes; V45, proportion of the volume receiving at least 45 Gy; D95, dose to 95% of the volume; Dmin, minimum dose; Dmax, maximum dose; Dmean, mean dose; V25, proportion of the volume receiving at least 25Gy; D50, dose to 50% of the volume; SD, standard deviation.