Advanced TP

A Simple Algorithm Check

IMRT: the State of the Art, AAPM Monograph 29 pg 449-473 (2003)

 20 X 20 cm 2 field, 18MV  50 X 50 X 50cm 3 water phantom  200cGy to 22cm depth  Introduce air inhomogeneities,  1cm wide mediastinum, 2cm surface layer

 Contour correction: 1cm 2 wide “ spike ”

 Contour correction: 25cm 2 wide “ spike ”