ATP Barcelona 2017

Very clear lung tumor: IGRT hypo

all in cm

systematic errors squared randomerrors squared

delineation organ motion setup error

0.17

0.0289

0

0.1

0.1

0.01

0.01

0.03

0.03

0.0009

0.0009

Intra-fraction motion respiration motion

0.1

0.1

0.01

0.01

1

0.3 0.111111

0

(0.33A)

0.36 0.132011

total error

0.22

0.05

times 2.5

difficult equation non-linear

error margin

0.56

0.07

total error margin

0.63

Using hypo-fractionation, prescription at 80% isodose line in lung