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Irradiation of normal tissue –
prague Home
work
•
Difference in irradiated body volume of 1000cm3
•
Question of PTV margin
–
5mm margin expands irradiated volume by 500cm3
–
10mm margin expands irradiated volume by 1000cm3
PTV
margin
5mm
PTV
margin 10mm
0
500
1000
1500
2000
2500
1 2 3 4 5 6 7 8 9 10 11 12
0
500
1000
1500
2000
1 2 3 4 5 6 7 8 9 10 11 1
Body V43
Bowel V15
28