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Table 2 Summary of panelist GTV and CTV volume statistics

From: Evaluation of variability in target volume delineation for newly diagnosed glioblastoma: a multi-institutional study from the Korean Radiation Oncology Group

GTV
Parameter Case 1 Case 2 Case 3 Case 4 Case 5 Case 6 Case 7 Case 8 Case 9
Volume maximum (cm3) 134.50 123.02 123.06 189.49 284.10 278.52 77.11 146.65 190.20
Volume minimum (cm3) 22.34 21.88 34.22 21.61 80.85 18.50 5.13 16.79 10.44
Volume mean (cm3) 65.27 43.35 52.07 114.20 106.22 169.86 34.15 61.12 95.24
Volume SD (cm3) ±33.42 ±27.88 ±24.15 ±55.31 ±50.55 ±66.92 ±19.84 ±36.45 ±51.68
Volume SD / volume mean 0.51 0.64 0.46 0.48 0.48 0.39 0.58 0.60 0.54
Volume intersection (cm3) 11.59 10.63 19.68 0.84 57.85 13.21 2.34 12.16 6.79
Volume union (cm3) 175.36 135.03 162.01 238.47 304.28 327.70 101.84 157.29 256.10
Kappa value 0.58 0.59 0.65 0.51 0.74 0.61 0.49 0.53 0.48
Agreement level Moderate Moderate Substantial Moderate Substantial Substantial Moderate Moderate Moderate
CTV
Parameter Case 1 Case 2 Case 3 Case 4 Case 5 Case 6 Case 7 Case 8 Case 9
Volume maximum (cm3) 486.35 485.32 531.45 419.49 817.83 564.00 247.17 388.33 636.09
Volume minimum (cm3) 61.96 181.74 83.18 194.91 176.76 259.26 64.22 80.23 150.10
Volume mean (cm3) 262.42 317.32 303.08 312.48 362.92 410.61 125.78 263.21 371.95
Volume SD (cm3) ±104.03 ±96.03 ±154.41 ±84.12 ±174.78 ±101.84 ±56.92 ±104.31 ±151.42
Volume SD / volume mean 0.40 0.30 0.51 0.27 0.48 0.25 0.45 0.40 0.41
Volume intersection (cm3) 25.53 134.41 53.97 46.67 145.25 217.43 31.73 71.49 104.90
Volume union (cm3) 572.74 591.32 609.61 534.51 880.28 693.43 311.87 510.41 724.87
Kappa value 0.63 0.71 0.55 0.68 0.64 0.74 0.62 0.62 0.65
Agreement level Moderate Substantial Moderate Substantial Substantial Substantial Substantial Substantial Substantial
  1. GTV gross tumor volume; CTV clinical tumor volume; SD standard deviation