An ultrasound produces images of the infant. This test is normally conducted between the ages of 18 and 20 weeks of pregnancy. An ultrasound is used to determine the size of the baby as well as to search for birth abnormalities or other issues with the infant. A normal ultrasound does not always mean that there are no problems with the fetus, but rather that these problems are undetectable with current technology. Many things can go wrong with an unborn child that require immediate medical attention. The symptoms of many problems with infants can be hard to identify without a physical examination or testing. This is why it is important for pregnant women to visit their doctors regularly for ultrasounds and other tests designed to detect issues with the fetus early on. Modern medicine has come a long way when it comes to detecting problems with babies before they become issues. Ultrasounds provide us with detailed pictures of the inside of the womb and fetal organs. These pictures can help doctors diagnose illnesses such as Down syndrome, Edwards syndrome, and other genetic conditions. Imaging technologies such as magnetic resonance imaging (MRI) and computed tomography (CT) can also see through tissues to provide information about brain development, limb growth, and other aspects of fetal health. Modern medicine is able to use this information to determine if an infant will have developmental delays, learning disabilities, or any other issues related to fetal health.