Ultrasound examination can be performed throughout pregnancy and is used to give different information at different times. Some of its uses are to check the age of pregnancy, the growth of the fetus, whether or not there are twins, the position of the fetus and placenta and the amount of amniotic fluid. Ultrasound examination can detect a number of different fetal abnormalities. Examples include most cases of spina bifida, some serious heart abnormalities, missing or malformed kidneys, some forms of dwarfism, missing limbs and occasionally a cleft lip or palate. It is important to know that ultrasound cannot diagnose all malformations.

When used to screen for birth defects in a fetus, ultrasound is ideally carried out at 22-24 weeks of pregnancy. This type of scan usually takes 15-30 minutes and partners are welcome to attend. It will be possible to have a souvenir picture of the fetus taken. If you would like one, please ask the staff carrying out your examination. Recent research suggests that an ultrasound scan, examining the fetal neck, between 10 and 14 weeks will help predict the risk of the fetus having Down Syndrome. We are happy to carry out this test and discuss the results with you.

If your ultrasound scan demonstrates an unexpected abnormality, the Consultant will be able to discuss the nature of the abnormality present and the possible effects on the baby. They will also provide support in the difficult days and sometimes weeks during which further tests may be necessary.

At 6-8 weeks of pregnancy. Confirms pregnancy is in the womb and excludes ectopic pregnancy, determines chorionicity (identicalness) of twins. Establishes expected date of delivery.

Nuchal thickness screening

11-13+ weeks of pregnancy. Determines risk of Down Syndrome based on maternal age and appearance of fetus. Counseling given.

Detailed anomaly scan

22-24 weeks of pregnancy. Structured examination of all the major fetal structures & organs including brain, spine, heart, kidneys, bones, umbilical cord. Includes measurements of head, abdomen and thighs. Sex of baby if desired.

Fetal well-being scan

32-34 weeks of pregnancy.  Measurement of fetal head, abdomen and thigh, amniotic fluid volume and cord blood flow. Placental site and 'grading'. Fetal position.