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Patient information: Prostate radiotherapy

You have been referred for a course of radiotherapy to the prostate.

Your prostate is very close to your bladder and your back passage (rectum), therefore, to make sure that we deliver the treatment as accurately as possible we are going to ask you to do some preparation.

You will need to have a comfortably full bladder and an empty rectum. The consultant will have given you a prescription for some enemas and we will ask you to drink 500mls of water. The bottle that has been provided holds the correct amount of water for this.

You will be asked to do his preparation at the first visit to the department for your planning CT scan and then every day before your treatment.

Below is a timeline for the preparation. This will be explained in more detail when you attend for you radiotherapy planning CT scan:

1 1/2 hours before your appointment: administer enema

1 hour before your appointment: Empty bladder and drink 500mls of water

To ensure your bladder is full enough for your scan and treatment each day you need to be well hydrated.

  • We recommend that you drink 2 litres of water per day (4 of the provided bottles). 
  • This should be spread out throughout the day. 
  • By drinking this water, it will mean that when you drink the 500mls for your preparation your bladder it will be easier and quicker to fill your bladder. 

There are several factors that may cause you to be dehydrated and will mean you need to drink more that 2 litres;

  • Sweating – either from hot flushes or activity 
  • Warm weather
  • Diarrhoea
  • Drinking alcohol
  • Tea/coffee

Prepare yourself to drink more water

  • Set a daily goal for water intake
  • Keep a reusable water bottle
  • Set daily reminders for yourself
  • Takes small sips
  • Flavour water with fresh fruits
  • Eat foods with high water content
  • Replace other drinks with waterr