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Table 2 Frequency of 2nd adaptations on a patient-level for the minimum feasible margins

From: Effect of intrafraction adaptation on PTV margins for MRI guided online adaptive radiotherapy for rectal cancer

Fractions needing a 2nd adaptation

Number of patients

CTVmeso

GTVprim

0

9

15

1

6

11

2

8

1

3

2

2

4

5

-