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. 2023 Dec 30;15(12):e51367. doi: 10.7759/cureus.51367

Table 1. Planning parameters for the radiosurgical boost and lesion volume changes.

Lesions are numbered in descending order of GTV.

*Cystic lesions without enhancement or scar-like enhancing lesions that are deemed to be in complete remission are contoured as GTVs.

**The lesions #6 and 7 were adjacent and their planning parameters are shown as one lesion.

***The eight lesions receiving SRS boost have a total of 118.41 cm3.

No: number; GTV: gross tumor volume; pre: three days before the whole-brain radiotherapy; Dmin: minimum dose; BED10: a biologically effective dose based on the linear-quadratic formula with an alpha/beta ratio of 10; %IDS: isodose surface (%) relative to the maximum dose (100%); Dmax: maximum dose; Rt.: right; Lt.: left

No Location Boost GTV (pre) Dmin (BED10) 27 Gy coverage %IDS to Dmax GTV* (last)
#1 Lt. parietal + 39.56 cm3 22 Gy 95.3% 52.8% 4.75 cm3 (12%)
#2 Rt. frontal + 21.61 cm3 22.3 Gy 95.6% 51.9% 1.40 cm3 (6.5%)
#3 Rt. parietal + 19.49 cm3 24.1 Gy 97.6% 54.1% 1.62 cm3 (8.3%)
#4 Rt. frontal + 15.34 cm3 22.6 Gy 96.5% 55.8% 2 cm3 (13%)
#5 Lt. frontal + 14.83 cm3 23.3 Gy 96.7% 55% 1.32 cm3 (8.9%)
#6 Lt. parietal + 4.75 cm3 24 Gy** 98.2%** 54%** 0.11 cm3 (1.6%)
#7 Lt. parietal + 2.02 cm3 (24 Gy)** (98.2%)** (54%)** 0 cm3 (0%)
#8 Lt. temporal - 1.99 cm3 - - - 0.40 cm3 (20.1%)
#9 Lt. occipital - 1.07 cm3 - - - 0.48 cm3 (44.9%)
#10 Lt. temporal + 0.81 cm3 26.1 Gy 99.3% 63.7% 0.38 cm3 (46.9%)
#11 Lt. occipital - 0.46 cm3 - - - 0.13 cm3 (28.3%)
#12 Rt. parietal - 0.22 cm3 - - - 0 cm3 (0%)
Total*** - - 122.15 cm3 - - - 12.59 cm3 (10.3%)