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Table 1 The MAD values (cGy) of different dose regions in the test data for the MSE and sharp loss functions

From: Sharp loss: a new loss function for radiotherapy dose prediction based on fully convolutional networks

  Loss function Average dose gradient (cGy/mm)
MSE loss Sharp loss
γ = 1 γ = 25 γ = 50 γ = 100 γ = 250 γ = 500
Whole region 56.72 43.78 52.45 43.40 84.57 690.74 950.98
Outside the body 32.93 24.31 34.31 24.10 71.82 765.24 1047.12
Inside the body 186.55 150.02 151.46 148.67 154.15 284.10 426.26
Region 0-500 cGy 109.43 87.46 99.06 99.68 110.40 265.66 457.31 1.97
Region 500–1000 cGy 294.03 262.00 228.30 220.12 221.34 245.57 224.44 78.67
Region 1000-2000 cGy 471.94 419.89 383.34 369.57 391.04 413.08 374.86 151.24
Region 2000–3000 cGy 649.82 530.12 504.69 472.01 488.17 517.25 485.96 267.06
Region 3000–4000 cGy 754.65 547.15 521.36 491.88 459.56 489.77 474.44 330.70
Region 4000–5000 cGy 645.23 453.75 407.67 410.46 319.72 410.30 379.45 222.84
Region > 5000 cGy 336.25 241.70 214.88 193.21 151.32 249.87 229.58 48.69
Std 312.57 254.86 245.41 236.20 228.79 374.80 555.69 -
  1. The last line shows the standard deviation values of the respective prediction errors inside the body. The last column shows the average dose gradient of the respective dose region in ground-truth