Gynae BT 2017

Bladder filling and bowel volume

 Full bladder versus empty bladder decreases volume of bowel irradiated to a significant dose

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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

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 Reproducibility of bladder filling?  Significant variation  Main purpose is to push bowel away!

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