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Oxford University Hospitals NHS Foundation Trust
Women's Services

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Ultrasound and Imaging Services

Important: roadworks are causing delays when driving to the John Radcliffe Hospital.

Please see 'Car travel and parking' for details.

The Obstetric Ultrasound and Fetal Medicine department offers both a Consultant and Sonographer-led service.

Maternity ultrasound

Tel: 01865 221715

The Ultrasound Unit offers the full range of obstetric ultrasound examinations at the John Radcliffe Hospital Women's Centre:

Obstetric Ultrasound Service

  • All routine ultrasound examinations and inpatient scans.
  • Level 4, Monday to Friday, 8.00am - 5.00pm.
  • Occasionally Saturday mornings 8.00am - 1.00pm

Down's Syndrome screening

All pregnant women are offered screening tests for Down's Syndrome. These tests to not give a definitive answer but tell you whether you are at increased risk of having a baby with Down's Syndrome. For more information please see below.

NHS Fetal Anomaly Screening Programme

Contact us

Prenatal Diagnosis Unit
Level 6, Women's Centre
John Radcliffe Hospital

Tel: 01865 22171

Annie Roberts
Screening Co-ordinator

Tel: 01865 221087

How to find the John Radcliffe Hospital

We are a specialist outpatient referral centre. We run clinics every morning by an appointment system. During these clinics, a variety of services are available including genetic counselling, detailed scanning and diagnostic procedures such as chorionic villus sampling and amniocentesis.

Tests in early pregnancy

Early pregnancy and dating scan

This early ultrasound scan provides important information about the number of babies present and the expected date of delivery. Pregnancy and the fetal heart can be seen from six weeks gestation by vaginal scan and from eight to nine weeks by abdominal scan. Accurate measurements and images are taken of the gestational sac and the 'crown to rump' length of the embryo, to accurately date the pregnancy.

Down's Syndrome

Combined Test

Serum blood screening in early pregnancy is performed alongside nuchal scanning in order to identify high-risk pregnancies.

The test is performed at 11 - 13 weeks and if the results show an increased risk a diagnostic test, such as chorionic villus sampling or amniocentesis is offered.

Quadruple Test

This test is offered to women who are more than 14 weeks pregnant at the time of the scan or in whom it has not been technically possible to obtain the measurements required for the Nuchal scan. The quadruple test is a blood test performed at 15 - 20 weeks of pregnancy. Four biochemical markers in the blood are measured and with the mother's age and weight, are used to calculate the risk of the baby being affected by Down's syndrome. This test is not suitable for multiple pregnancies.

Fetal anatomy scan

Between 19 - 21 weeks the anatomy of the baby is scanned in detail. The careful and accurate measurements made during the scan help to monitor the wellbeing of the baby.