789 / 1601
Compliance
•
All NSCLC patients perform a voluntary DIBH after 4DCT
•
Pilot study (17 patients)
•
Treated in free breathing
➢
3 time points: DIBH CT and CBCT
•
15 could perform DIBH until the end of their treatment course
➢
1 develop radiation pneumonitis
➢
1 wished to drop out of the study
➢
All others had “reproducible” breath holds
Data submitted to Acta Oncol
Persson et al