ESTRO 2024 - Abstract Book

S2271

Clinical - Upper GI

ESTRO 2024

Statistically significant differences were found between the baseline dose and the reconstructed doses for MHD. However, most differences were relatively small and had limited clinical relevance, with limited impact on the estimated EDIC and 2YM risk. Both reconstruction strategies estimated the OAR dose similarly, but changes in OAR volume were not incorporated well in the warped dose.

Table 1. Plan characteristics

n = 161

Radiotherapy technique

IMPT

143

VMAT

18

Fractionation schedule

23*1.8 Gy

131

28*1.8 Gy

30

Number of repeated CTs

4

35

5

109

6

16

7

1

Number of plan adaptations

0

112

1

44

2

5