You may need to prepare for your procedure.
There is no preparation required for x-rays.
Some ultrasound examinations require prior preparation by the patient. These are required so that the Sonographer who is doing the ultrasound can see properly to the areas that they have been asked to look at.
Abdomen/Gall Bladder / liver / Aorta
Drink plenty of water but do not eat for 8 hours prior to examination
Full bladder required, drink 3 – 4 glasses of water 1 hour before examination
Pelvis and early pregnancy (less than 4 months)
Full bladder required, drink 3 – 4 glasses of water before examination
Pregnancy (after 4 months)
Try to have a full bladder for the examination