An ultrasound examination obtains a picture of the inside of the body without the use of x-rays. It involves high frequency sound waves, which are transmitted through the skin and reflected by the internal organs. These echoes form a picture on the screen, which can be examined for any abnormality. There is no pain from an ultrasound examination. Many parts of the body can be investigated by ultrasound, but the technique is commonly used to examine the abdominal organs, pelvis, heart and major blood vessels. Other areas, which may be examined, include the breasts, testes and thyroid gland. ultrasound scanMost pregnancies are now monitored by ultrasound examination to assess the age, health and position of the unborn baby. Ultrasound is used to assess the reproductive organs for any abnormality.