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Bladder filling and bowel volume
Full bladder versus empty bladder
decreases volume of bowel
irradiated to a significant dose
Examples drinking protocol:
Instruction of patients to keep full
bladder
Aarhus University Hospital: 450-
500ml 1 hour prior to planning CT
scan and to each treatment
Tata Memorial: 750-1000ml 30
minutes prior to planning CT and to
each treatment
Reproducibility of bladder filling?
Significant variation
Main purpose is to push bowel away!