This is called the dating scan. You can estimate the due date of the baby by using our pregnancy calculator. Learn more about how and when it is performed. This is presuming that the pregnancy is actually at this stage of development. Menu Close menu. Opens in a new window.
A nuchal translucency scan is part of the ultrasound scan that may give an indication of chromosomal abnormality.
Your pregnancy and baby guide
Around 1 in 5 women may have experienced a miscarriage and are keen to get some reassurance. Dating and viability What is a dating scan? Find out about early ultrasounds at weeks, sometimes called dating scans. What preparation do I need to do for a dating scan? Your midwife or doctor will book you a dating scan appointment. March We look for the presence of the heart beat and measure the length of the baby, this is the crown rump length.