Ultrasound scanner is a machine that uses sound waves to produce images for diagnosing disease. The sound waves travel freely through fluid and soft tissues to produce an image. It helps to monitor the growth of an unborn child and check for abnormalities.
An ultrasound scan is routine for pregnant women. It can detect abnormalities of heart structures such as the heart valves. This type of ultrasound scan is called echocardiography. The scan is painless and takes about 15-45 minutes, depending on which parts of the body examined. A record of the results of the test can be made as still pictures or as a video recording.