While some people wait until their baby is born to find out their biological sex, others want to know as soon as possible.

My doctor assumed it was a girl when my baby had his legs crossed but the second time my husband and I went for an ultrasound the ultrasound tech showed us that it was a boy,' someone else explained.

A diagnostic medical sonographer could be answering the question "Is it a boy or a girl?" as well as a host of other life-changing medical questions with the help of ultrasound technology.