Ultrasound uses high frequency sound waves. A transducer is placed onto the mother's abdomen, along with a gel that makes the sound waves more effective. The sound waves then reach the baby and are sent back to the transducer, creating an ultrasound image. In some cases, especially during very early pregnancy, an ultrasound is also performed trans-vaginally. While ultrasound is generally known as a safe practice, technicians are trained not to hold the transducer in one place for longer than a few seconds, because the baby can experience a rise in temperature. Some research shows that unborn babies generally react to ultrasounds in some way, sometimes by covering their eyes with their hands. Apparently, the practice is annoying to a fetus. As long as the ultrasound technician who is carrying out your scan for you is a qualified professional, and you only have one ultrasound or additional ultrasounds exclusively for medical reasons and not for "fun", ultrasound is still a tool that can provide valuable diagnostic information. However, I advise against visiting the "4-D ultrasound" establishments that have become popular in recent years, because they often employ less qualified staff.
Ultrasound has become an important diagnostic tool in pregnancy that has many uses it can provide us with information about the development and size of your baby, about the location of the placenta and the amount of amniotic fluid. For the vast majority of mothers to be, who are having healthy children, ultrasound is simply a fun opportunity that allows them to take a sneak peak at the baby they are carrying. For mothers who are pregnant with babies who have birth defects or medical problems, ultrasound sometimes offers the chance to treat those conditions, or at least prepares doctors and parents for the future. But what about the safety of ultrasound during pregnancy? Do you need to worry about the risks ultrasound might pose to your unborn baby?