Twin & Triplet Scans

Women carrying twins or triplets will require more ultrasound scans during their pregnancy. The team at SHORE FOR WOMEN have a huge amount of experience in performing ultrasound scans in multiple pregnancies. While working in Ireland, Dr Colin Walsh helped to run a specialist ultrasound clinic dedicated to high-risk twins. In addition to offering specialist ultrasound scanning for multiple pregnancies, we also offer comprehensive private antenatal care, labour and delivery management and postnatal follow-up for multiple pregnancies.

Ideally, all women with twins should be scanned before 12 weeks, to allow chorionicity to be accurately assigned. The recommend schedule of ultrasounds depends on the type of multiple pregnancy (i.e. chorionicity or placental configuration).

Dichorionic-Diamniotic (DCDA) twins

This is the commonest type of twins (80%) and each twin has their own sac and own placenta. Following the fetal anatomy scan, we recommend regular scans every 3-4 weeks from 24 weeks for DCDA twins.

Monochorionic-Diamniotic (MCDA) twins

MCDA twins are always identical and the twins share a placenta. As such, there is a 10-15% risk of twin-twin transfusion syndrome (TTTS), which is a very serious complication. International best practice is for MCDA twins to be scanned every 2 weeks, commencing from 16 weeks, to watch for TTTS developing.

Monochorionic-Monoamniotic (MCMA) twins and triplet pregnancies

MCMA twins (who share both a placenta and sac) and triplets are very rare. These complex pregnancies should be managed by an experienced maternal-fetal medicine specialist. At SHORE FOR WOMEN we have considerable experience in caring for complex twin and triplet pregnancies.

Other Specialist Ultrasound Lists

  • Mater Hospital
  • North Shore Private Hospital
  • The University Of Sydney
  • Royal College Of Obstetricians and Gynaecologists