

ESTRO IMRT course 2015
Adaptive Radiotherapy
Brussels October 8th, 2015
-37-
again: prostate…
CONCLUSION:
Although prostate deformation with respect to implanted fiducial markers
was small, the corresponding deformation of the seminal vesicles was
considerable. Adding marker-based rotational corrections to on-line
translation corrections provided a limited reduction in the estimated
planning margins.
G. J. van der Wielen et al. 2008:Deformation of prostate and seminal vesicles relative to
intraprostatic fiducial markers. IJROBP 72(5)
Further limitations of daily rigid isocentre adaptations:
Deformable uncertainties