Table 3

Radiation dose parameters
PTVCP Spacer union Rectum union
EUD (Gy) Mean dose (Gy) Mean dose (Gy) V75 (%) V70 (%) V65 (%) V40 (%)
Pat 1 75.8 72.8 38.0 0.2 1.7 7.9 43.4
Pat 2 76.8 75.9 42.0 3.8 16.0 24.7 58.5
Pat 3 76.3 74.2 41.4 2.8 11.3 21.3 56.8
Pat 4 75.7 72.3 40.4 0.7 5.0 14.4 57.1
Pat 5 76.6 74.1 42.0 3.2 11.2 19.0 58.5
Pat 6 75.4 72.9 40.5 3.7 14.9 23.8 50.9
Pat 7 75.8 73.2 47.8 1.1 13.1 24.4 73.2
Pat 8 76.9 77.8 29.5 1.1 7.2 11.7 34.3
Pat 9 76.6 75.6 41.3 3.1 11.8 19.8 60.6
Pat 10 75.7 71.9 40.6 0.5 8.8 18.7 56.4
mean±SD 76.2±0.51 74.1±1.8 40.4±4.3 2.0±1.4 10.1±4.2 18.5±5.3 55.0±9.9

Dose coverage in the PTV was evaluated based on the EUD in the PTVCP (union of three single CTVs with a 7 mm margin weighted by the coverage probability). Rectal doses were described by DVH-parameters.

Abbreviations

DVH – dose volume histogram.

EUD – equivalent uniform dose.

Gy – Gray.

Pat – patient.

PTVCP – coverage probability-planning target volume.

SD – standard deviation.

V – volume receiving respective radiation dose in Gy or more.

Eckert et al.

Eckert et al. BMC Cancer 2013 13:27   doi:10.1186/1471-2407-13-27

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