There is no radiation.
Sonograms are helpful in evaluating pregnancy as well as other pelvic conditions.
The examination results will be evaluated by a radiologist or other physician skilled in interpreting sonograms. The examination will be performed by a technologist who is an expert in using ultrasound equipment. The day of the examination, you will be asked not to urinate for a period of time before the examination. About 1 hour before the examination, you will be asked to drink a large quantity of water. For the examination to be successful, your bladder must be full.