Dr. Geddes is a specialist in ultrasound technology, using it to learn more about the anatomy of the lactating breast, and infant sucking dynamics. She has discovered that creating a vacuum is essential for an infant to successfully remove milk during breastfeeding. Dr. Geddes has used this non-invasive tool to shed light upon the effects of tongue-tie. Her work has attracted much international attention. She has received the Early Career Research award from ISRHML (2008) and the Certificate of Distinction for Innovative Research from the Raine Medical Research Foundation, Perth (2008) in recognition of her contribution to scientific research.