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Table 1 Mean, median, minimal and maximal absolute doses to the PTV for different fractionation regimens

From: Hypofractionated image-guided breath-hold SABR (Stereotactic Ablative Body Radiotherapy) of liver metastases – clinical results

PTV dose parameter Dose (Gy)
(Mean value ± Standard deviation)
  single-fraction 2 fractions 3 fractions 5 fractions
  SABR (n = 12) (n = 2) (n = 3) (n = 5)
D mean 26,07 ± 1,81 27,16 ± 3,87 33,92 ± 1,37 59,51 ± 0,58
D median 26,11 ± 1,79 27,12 ± 3,88 34,34 ± 1,47 59,89 ± 0,66
D min 23,9 ± 1,85 21,23 ± 3,31 26,56 ± 2,46 50,92 ± 8,00
D max 27,26 ± 2,06 29,3 ± 5,44 36,3 ± 0,89 62,48 ± 1,24
D 99 24,2 ± 2,62 25,65 ± 4,0 32,6 ± 2,55 57,54 ± 3,19
  1. D99: Dose encompassing 99% of the PTV.
  2. Abbreviations: Dmin, minimal dose; Dmax, maximal dose; Dmedian, median dose; Dmean, mean dose, PTV, Planning Target Volume.