A sonogram, also known as an ultrasound, is a computerized picture taken by bouncing sound waves off organs and other interior body parts. A wand called a transducer is glided along the outside of the body over a centralized area or organ. As it glides, it introduces sound waves into the body. These sound waves bounce off the intended area and back into the transducer, which feeds the information into a computer. The picture then appears on a special computer screen. The sonogram is most often used to monitor a pregnancy.
There is not too much preparation involved for a sonogram. It's all dependent on the area to be examined. For instance, those who are having an abdominal sonogram may be asked not to eat or drink anything for 24 hours so their doctor can better examine the stomach. A pregnant woman is usually asked to drink lots of water before her sonogram, as it helps the doctor to see the fetus a little better. Loose, comfortable clothing should be worn in order to make the procedure run a little smoother. Other than that, read all the instructions provided by your doctor.