Physics Bucharest 2017
Example
Palliative case treating a field of 8*8 cm to 20Gy in 4# Prescription point 5cm depth. Patient to be treated at 100SSD
“Willow” 6MV PDD* Output
Depth
Equivalent Square Field Size (cm)
(cm)
4
4.5
5
5.5
6
6.5
7
7.5
8
8.5
9
9.5 10
Dmax (1.5) 93.6 94.5 95.4 95.7 95.9 96.6 97.3 97.7 98.2 98.5 98.8 99.4 100.0 2.0 92.7 93.7 94.7 94.8 94.8 95.5 96.1 96.6 97.1 97.4 97.7 98.3 99.0 2.5 90.5 91.5 92.6 92.8 93.0 93.5 94.1 94.6 95.1 95.4 95.8 96.3 96.9 3.0 88.0 89.1 90.1 90.4 90.7 91.2 91.8 92.3 92.8 93.2 93.6 94.3 95.0 3.5 85.8 86.9 88.0 88.3 88.7 89.2 89.8 90.3 90.8 91.2 91.6 92.1 92.6 4.0 83.7 84.7 85.7 86.0 86.3 87.0 87.7 88.2 88.6 89.1 89.5 90.2 90.8 4.5 81.3 82.2 83.1 83.6 84.2 84.9 85.6 86.1 86.5 87.0 87.4 88.0 88.6 5.0 79.1 80.0 80.8 81.5 82.2 82.8 83.4 84.0 84.5 84.9 85.4 86.0 86.7 5.5 76.7 77.9 79.0 79.3 79.6 80.5 81.3 81.9 82.4 82.8 83.3 84.0 84.7 6.0 74.7 75.6 76.5 77.2 77.8 78.5 79.1 79.7 80.3 80.9 81.6 82.1 82.5 6.5 72.5 73.6 74.7 75.2 75.7 76.6 77.4 77.9 78.4 78.8 79.2 79.9 80.5 7.0 70.5 71.5 72.5 73.1 73.7 74.4 75.1 75.8 76.4 76.9 77.3 77.8 78.4 7.5 68.3 69.5 70.7 71.2 71.6 72.4 73.2 73.8 74.3 74.8 75.3 76.1 76.8 8.0 66.4 67.5 68.5 69.2 69.8 70.5 71.2 71.9 72.6 72.9 73.3 74.1 74.8 8.5 64.5 65.6 66.6 67.3 67.9 68.6 69.3 70.0 70.7 71.1 71.5 72.2 72.9 9.0 62.5 63.6 64.8 65.4 66.1 66.7 67.4 68.1 68.7 69.1 69.5 70.3 71.1 9.5 60.8 61.9 63.0 63.5 64.1 64.8 65.5 66.2 66.9 67.5 68.0 68.6 69.2 10.0 58.8 59.9 61.1 61.7 62.3 63.1 63.8 64.5 65.1 65.6 66.1 66.8 67.5 10.5 57.1 58.3 59.5 60.0 60.4 61.2 62.1 62.7 63.2 63.8 64.4 65.0 65.6 11.0 55.5 56.6 57.7 58.2 58.7 59.5 60.4 61.0 61.6 62.2 62.8 63.4 64.0 11.5 53.9 55.0 56.0 56.5 57.1 57.9 58.8 59.4 60.1 60.6 61.1 61.6 62.2 12.0 52.3 53.4 54.4 55.0 55.6 56.3 57.1 57.7 58.4 58.9 59.4 60.1 60.8
=591.7
Basic Dose Caculation Principles 2012
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