Folie 1

326 / 1224

Number of Fractions and Residual Systematic Error
 Limited number of fractions results in a residual shift of the dose distribution
 Residual error
 Error after 35 fractions = 0.1 mm
 Error after 5 fractions = -1.6 mm
-8
-6
-4
-2
0
2
4
6
8
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35
Error (mm)
FractionNumber