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About Us

We are a group of interventional radiologists based at the Sydney Adventist Hospital.

Interventional Radiologists use imaging guidance such as X-ray, ultrasound and CT scan to perform minimally invasive therapies. Through a tiny nick in the skin, miniature catheters and instruments can be run through a patient's network of arteries, veins or other pathways to treat directly at the site of illness internally. 

Most procedures are performed under local anaesthetic, however intravenous sedation and pain control may be required in some procedures. Interventional Radiology is generally associated with low complication rates, and the recovery period is usually shorter than when open surgery is performed. Many conditions that once required surgery can now be treated non-surgically by Interventional Radiologists. 

Sydney Interventional Radiology mission statement

World class IR practice through R.I.C.E.


to stay at the forefront of our field


to bring in the latest treatments to benefit our patients


to make things happen


to raise awareness of IR treatments 

Our Vision: 

To bring together like-minded interventionists to share a practice facility to enhance clinical IR service provision.
To nurture intra- and interdisciplinary collegiate collaboration to achieve the best clinical outcomes for our patients.
To grow a sizeable practice to effectively support the interventionists to achieve his/her potential.
To allow mutual cover to achieve desirable work-life balance.

Our Doctors

Dr Eisen Liang


Dr Liang graduated with first class honours from UNSW in 1988. After his internship and residency at Westmead Hospital, he started his radiology career in Hong Kong in 1990. He was appointed lecturer in radiology at the Chinese University of Hong Kong in the Prince of Wales Hospital in 1994. He was awarded the fellowship of the Royal College of Radiologists (London) in 1995 and the fellowship of the Royal Australian and New Zealand College of Radiologists in 1996. He was a partner with Castlereagh Imaging from 1999 to 2004, practising in Hong Kong and Sydney.

Dr Liang has a passion for interventional radiology. He started this subspecialty in 1995, predominantly treating liver cancers with chemoembolisation and percutaneous ablation. In 1997, he did a travelling fellowship visiting interventional radiology luminaries around the world including Robert Dick and Anthony Watkinson at the Royal Free Hospital London, Barry Katzen at the Miami Vascular Institute, Anthony Venbraux at the Johns Hopkins and Wayne Yakes in Colorado. In 2000, he visited the world leader in UFE Dr James Spies in Georgetown University.

Dr Liang returned to Sydney with his family in 2003. In 2004 he did an Interventional Sabbatical Fellowship at Alfred Hospital Melbourne with Prof Ken Thomson and Dr Stuart Lyon to perfect his technical skills such as renal artery stenting, uterine fibroid embolisation, vertebroplasty, IVC filters and venous accesses.

Dr Liang joined San Radiology in October 2004. He is a Senior Clinical Lecturer for USyd Clinical School.

He formed Sydney Interventional Radiology Associates in 2014 to engage a group of interventionists to further improve the provision of IR services at the SAN.

Dr Liang has special interest in Uterine Artery Embolisation for fibroids and adenomyosis. He published the first Australian series on using UAE to treat fibroids and adenomyosis in ANZJOG in 2012. His other interests are Pelvic Congestion Syndrome; Oncology Intervention such as Chemoembolisation (TACE) and Radioembolisation (SIRT); Renal Vascular Hypertension and stenting; Peripheral vascular disease, Venous Access and Image guided biopsies.

He is a keen sailor but yet to find time and crews to race his yacht.

DR S Murthy Chennapragada


Dr Chennapragada is a medical graduate with distinction honours from the University of Health Sciences in India. He underwent radiology training at Osmania General Hospital, Hyderabad, India and Christian Medical College Hospital, Vellore, India.

He came to Australia for training in Paediatric Radiology at the Children’s Hospital at Westmead. He then went for further fellowship training in Vascular and Interventional Radiology at the University of Toronto in Canada. Since his return to Australia in 2006, he has been a consultant interventional radiologist at the Children’s Hospital at Westmead, Gosford Hospital, and Sydney Adventist Hospital. He is one of the very few specialists in Australia with training and experience in treating both adults and children, using interventional radiology techniques.

Murthy performs a wide range of interventional procedures including embolisation, angioplasty, biopsies and vascular access. His has special interests in vascular malformations , renal vascular disease and dialysis access. He has been active in research, presented his work at local and international meetings He has published many interventional radiology papers in medical journals.

He is a Clinical Senior Lecturer at University of Sydney. He has been associated with the Sydney Interventional Radiology since its inception.

Dr Rajiv Rattan


Dr Rattan trained at University College of Medical Sciences in Delhi, India. He received his Radiology training from the University of Rajasthan, India.

Rajiv came to Australia in 2008 and has since then worked as a Senior Staff Specialist at the Central Coast Local Health district. He is also a Conjoint Lecturer at the School of Medicine at the University of Newcastle.

Dr Rattan is passionate about Interventional Radiology and performs biopsies, drainages, joint and spine injections as well as vascular access.

He has regularly presented in domestic and international conferences as well as contributed chapters to books in Radiology.

Dr Rattan has been associated with the Sydney Interventional Radiology since its inception.

His other area of interest is Radiology Education and he plays an active role in teaching Radiology trainees.

Outside Radiology Rajiv is interested in photography and theatre.

Dr Christopher Rogan


Dr Rogan graduated in Medicine from the University of NSW in 2002 with First Class Honours. He was a Neurosurgery registrar at Nepean Hospital and RPAH and completed Basic Surgical Training prior to entering radiology. Over the next 5 years, he trained in Radiology at Royal Prince Alfred Hospital, spending his senior registrar year after completing the fellowship exam focussed on interventional radiology and MRI. Subsequently, Chris was the Fellow in Interventional Radiology at Imperial College in London based at Hammersmith and St Mary’s Hospitals.

He is currently a Staff Specialist at RPAH with a focus on Interventional Oncology, Angioplasty and Stenting, Embolisation and Endovascular procedures. He is also a VMO at Macquarie University Hospital, Royal North Shore Hospital, North Shore Vein Clinic and Sydney Adventist Hospital. He is involved in publications, research, education and other academic activities and plays an active role in the Interventional Radiology Society of Australasia, currently as an organiser for its 2015 Annual Scientific Meeting.

Dr Rogan is Clinical Lecturer at the Faculty of Medicine and Health Sciences, Macquarie University. He has special interests in Interventional Oncology, liver disease, peripheral vascular disease and varicose vein treatments. He is currently investigating the use of Intra-Arterial Isolation Chemotherapy to treat liver and pancreatic cancers.

He enjoys playing guitar and keen to learn to sail..

Check out his website here.

Dr David Boshell


Following medical school at the University of New South Wales, Dr Boshell completed his internship and residency at Westmead Hospital.

He completed his specialist training in Diagnostic Radiology at St Vincent’s Hospital. He then went through Interventional Radiology fellowship at St Vincent’s Hospital. Dr Boshell is currently a consultant Interventional Radiologist at St Vincent’s Hospital and Sydney Adventist Hospital.

Dr. Boshell has special interests in peripheral vascular disease, pulmonary vascular disease, dialysis access intervention, venous disorders, and interventional oncology. He performs minimally invasive procedures to treat peripheral arterial disease (PAD), vein thrombosis, venous reflux and varicose veins. He is well a recognized leader in Yttrium-90 microsphere radioembolization, as know as selective internal radiation therapy (SIRT).

Outside of the hospital, David spends time with his wife raising a young family.

Dr Christine Chan


Dr Chan is currently a Senior Consultant Interventional and Diagnostic Radiologist in Royal Prince Alfred Hospital, Concord Repatriation General Hospital and Breast Screen NSW. She has completed two years post graduate fellowships in Interventional Radiology and Breast Imaging in Sydney.

Dr Chan has special interest in Interventional Oncology, Interventional Radiology treatment for Women and Breast Imaging. She regularly participates in the multidisciplinary team meeting and provides various minimally invasive treatments of liver, lung and kidney tumours including ablation, intra-arterial chemotherapy/radioembolizationtherapies (credentialed for delivery of SIR-Spheres, DC beads, TACE, Microwave, RFA and Cryoablation). She also performed various interventional pain management procedures, peripheral vascular disease, renal dialysis fistula maintenance and varicocele treatment.

She is passionate in female interventional procedures including Uterine Artery Embolization for fibroids and adenomyosis and treatment of Pelvic Congestion Syndrome.

Dr Chan is a clinical lecturer for University of New South Wales and an appointed IMG assessor for The Royal Australian and New Zealand College of Radiologists. She is also currently the Director of Training for Royal Prince Alfred Hospital.

Dr Colin Tan


Dr Tan completed his registrar and fellowship training in Interventional Radiology at Westmead Hospital. Outside Sydney Interventional Radiology, he is a Staff Specialist at Royal Prince Alfred Hospital, Chris O’Brien Lifehouse and Gosford Hospital.

Dr Tan is a dedicated interventional radiologist. His main focus is on interventional oncology. He treats cancers with trans-arterial chemoembolization (TACE), microwave and radiofrequency ablation. He is involved in bringing Nanoknife ablation to Sydney. He is experienced in pain management using spinal and musculoskeletal injections. He also treats arterial and venous disease including varicose veins. He is starting a lipiodol flush program for infertility.

His appointments at teaching hospitals allow him to teach registrars and fellows, and to expand his research and academic interests. He is currently the coordinator of radiology Fellows at RPA hospital.

In his spare time, he enjoys road riding and middle distance running, but usually is kept busy and gets most joy by annoying his young children and providing a daddy taxi service.

Dr Nick Repin


Nick is a well known and well loved all rounder interventional radiologist at the North Shore. He normally lives and practices on the North Coast, but always keen to come to do locum covers for us at the SAN, just to catch up with his family and friends in Sydney. Nick is humble and unassuming, but very clever and resourceful.