Mrs Erika Cavanagh FASA | Mater Centre For Maternal Fetal Medicine Erika is a Sonographer of over 20 years experience, who specialises in Maternal Fetal Medicine ultrasound. She is currently in the final stage of completing her PhD, investigating Shear Wave Elastography of the Placenta in Fetal Growth Restriction and Pre-eclampsia. In her spare time she likes to smother her golden retriever with love and go shopping at Mecca.