Obstetrics & Gynaecology

Research Staff

Associate Professor George Condous


OMNI Ultrasound and Gynaecological Care
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George Condous currently is collaborating through the University of Sydney's Charles Perkins and Brain and Mind Centres. The collaboration through the CPC, with the Westmead Periodontal and Nepean Paediatric Units, is looking at the effect of Oral Health on Pregnancy outcome. The Brain and Mind Centre collaboration, with Nepean Psychiatry and gynaecological Units, is looking at the effect of behavioural therapies in women with endometriosis related chronic pelvic pain.

He is Head of Discipline of Obstetrics and Gynaecology and Associate Professor of Obstetrics and Gynaecology at Sydney Medical School Nepean, University of Sydney. He is a specialist with an interest in Gynaecological Ultrasound and Advanced Endosurgery. He set up the first and only Acute Gynaecology Unit to date in Australia which utilizes ultrasound at the first point of contact for women with emergency gynaecological as well as early pregnancy complications (miscarriage and ectopic pregnancy). He performs Advanced Endosurgery procedures for women who need intervention for pelvic masses, adnexal pathology, stage IV endometriosis and/or hysterectomy. He works in a multidisciplinary team at the SAN Hospital with Dr Walid Barto, who is one of the local Colorectal Surgeons. Together they perform Joint Laparoscopic Surgery on women with the most severe forms of bowel endometriosis. He runs the LaSGeG laparoscopic courses through the SAN Hospital teaching O&G Specialists and trainees laparoscopic surgery.

He is Co-Chair for the International Society of Ultrasound in Obstetrics and Gynecology (ISUOG) World Congress in Singapore 2018.
He is Chair for the World Federation of ultrasound in Medicine and Biology (WFUMB) World Congress in Melbourne 2019.

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Research Interests

George Condous is an Academic Gynaecologist with special interests in advanced gynaecological ultrasound and advanced laparoscopic surgery.

His research themes include early pregnancy complications and diagnosis of endometriosis.

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Associate /Professor Condous currently supervises three PhD fellows, each on a 3 year program, through Sydney Medical School Nepean. Dr Nicole Stamatopoulos is studying biomodelling to predict first trimester outcome; Dr Mathew Leonardi is studying new ultrasound techniques to predict endometriosis; and Dr Bassem Gerges is studying different imaging modlaities to predict endometriosis.
Dr Shannon Reid recently completed her PhD through the University of Sydney in the use of ultrasound to predict endometriosis.
He currently supervises 4 MD students whose projects include early pegnancy complications and the use of ultrasound in women with endometriosis.

Dr Mathew Leonardi


Mathew Leonardi is a Canadian-trained obstetrician-gynaecologist and Fellow of the Royal College of Physicians and Surgeons of Canada. He completed his MD and residency in obstetrics and gynaecology at the University of Toronto. He is now living in Sydney and undergoing a two-year subspecialty-training program in advanced gynaecological endoscopic surgery and gynaecological ultrasound under the primary supervision of Associate Professor George Condous. Simultaneously, he is enrolled in the Doctor of Philosophy (Medicine) program at the University of Sydney, which is focused on the utility of ultrasound for the diagnosis and management of endometriosis. Mathew was appointed as a Honorary Lecturer of Sydney Medical School. His primary clinical areas of interest include endometriosis, pelvic pain, laparoscopy, gynaecological ultrasound, and early pregnancy complications.

Professor Hans Peter Dietz


Sydney Pelvic Floor Health

Professor Hans Peter Dietz graduated from Heidelberg University, Germany, in 1988, obtaining an MD there in 1989. After emigrating to New Zealand in 1990, he arrived in Australia in 1997 and completed his FRANCOG training in 1998. Between 1999 and 2002, Dr Dietz undertook urogynaecology subspeciality training in Sydney and obtained a PhD with the University of New South Wales, then joined Nepean in 2002 and is Professor in Obstetrics & Gynaecology at the Sydney Medical School Nepean, University of Sydney.
Professor Dietz is Editor of ‘Ultrasound in Obstetrics and Gynecology’ and Associate Editor of the ‘Australian and New Zealand Journal of Obstetrics and Gynaecology’.
He is active in a number of national and international scientific societies such as CFA, RANZCOG, IUGA, ISUOG and ICS and has published 228 peer-reviewed papers (H factor 50 in 2014), and 14 book chapters, the vast majority relating to ultrasound imaging in Urogynaecology.

He has been active in urogynaecological imaging research since 1986. Since coming to Nepean, he has organised over 50 imaging workshops at urogynaecological and imaging meetings.
His current research interests include , pregnancy and childbirth- related pelvic floor trauma and the ethics of professional conduct, in particular as regards the industry- research interface.

Research Activities


  • Pelvic Floor Trauma in childbirth: diagnosis, prediction, prevention, surgical correction.
  • The aetiology of female stress urinary incontinence Vaginal birth after Caesarean
  • The psychological impact of traumatic childbirth
  • Informed consent in antenatal and intrapartum care Anal sphincter trauma: diagnosis, prediction, evolution and prevention.
  • Mesh use in pelvic reconstructive surgery

Professor Ron Benzie

ron benzie


Professor Ron Benzie’s main research interests for the past years have been in the field of prenatal diagnosis. He founded the international fetal anomaly database PLATYPUS (Programme Listing Abnormality and Prenatal Ultrasound) and is involved in the development of electronic aids to diagnosis and the assessment of their role in medical education. His current research is concerned with prenatal fetal diagnosis using 3D and 4D ultrasound technology.


Phone: +61 2 4734 3163
Fax: +61 2 4734 2567 or +61 2 4734 2561

Address: Division of Women and Childrens Health- Perinatal Ultrasound
Nepean Hospital, Level 5 South Block
PO Box 63, Penrith NSW 2751 Australia