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MR imaging and treatment planning for
every fraction?
Depends on local infrastructure
Important considerations regarding imaging:
MRI is more important in large tumors as compared to
tumours without parametrial infiltration
BT after major tumour shrinkage: 1
st
fraction MRI (or pre-BT
MRI), succeeding fractions can be done with CT
Complex BT applications (IC combined with IS) and/or
expected target shrinkage: repeated MRI and plan
adaptation are recommended