Abstract
Ultrasound scanning is a cornerstone of modern antenatal care, enabling the detection of fetal abnormalities such as congenital disease, chromosomal defects and growth-disorders as well as maternal diseases such as pre-eclampsia. As technology and techniques evolve, care paradigms and clinical guidance must be re-evaluated with current literature so as to provide expectant parents with the highest quality of care. We present here the current state of the literature, the conflict between guidance and research endeavours and present suggestions for future study.
Keywords: Fetal growth; Small for gestational age; Third trimester scan.

Dr Spyros Bakalis is a consultant obstetrician and sub-specialist in Maternal and Fetal Medicine with 19 years of experience in the NHS. He completed his undergraduate training at Guy’s, King’s and St Thomas’ Medical School, whilst concurrently obtaining a scholarship to complete a degree in clinical genetics. He has since been awarded a research MD and has been accredited by the RCOG with his subspecialty in Maternal and Fetal Medicine.