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Professor Mark J Ryan

Consultant Radiologist

Speciality: Interventional radiology

Sub speciality: Diagnostic radiology

Professor Ryan graduated in medicine from Trinity College Dublin in 1988. He is a clinical professor at Trinity College Dublin.

Professor Ryan completed specialist fellowship training in interventional radiology and abdominal imaging at Massachusetts General Hospital, Harvard Medical School, Boston. He was an assistant professor of radiology at Duke University Medical Center in North Carolina from 1998-2004. He is a fellow of the Cardiovascular Interventional Radiological Society of Europe and has a European Board of Interventional Radiology qualification.

Professor Ryan is a director and board member of the Voluntary International Children's Medical Charity, Operation Childlife (reg charity No 20005). With Operation Childlife, in cooperation with The Christina Noble Children’s Foundation, he has been involved in helping develop specialist medical care and expertise in paediatric hospitals in Ho Chi Minh City, Vietnam.


  • Professor Ryan specialises in delivering minimally invasive oncological and endovascular treatments for many forms of cancer, vascular malformations, liver disease and for bleeding and thrombotic disorders. He has a particular interest in minimally invasive treatments for cancer including; chemoembolization and ablation therapies.

    He has specialist expertise in the treatment of vascular malformations, as well as a clinical research interest in the endovascular management of haemorrhage and thrombosis. He has a specialist interest in the diagnosis and minimally-invasive treatment of acute life-threatening haemorrhage.

    Professor Ryan described a novel technique for the investigation of patients with occult bleeding that widely cited in the scientific literature. He also has a particular interest in urological problems associated with gynaecological malignancy and with his gynaecological oncology colleagues at St James’s Hospital, has co-developed new techniques and management strategies for patients with these problems.

    He also has a particular interest in the interventional management and treatment of chronic liver disease, in minimally invasive treatments for hepatocellular carcinoma, and Transjugular Intrahepatic Portosystemic Shunts (TIPS) for portal hypertension.

  • Professor Ryan has been actively involved in academics and clinical research for over 20 years, during which time he has published and presented more than 165 scientific papers, editorials, articles, presentations and book chapters with more  than 2,260 citations in medical literature. He has been involved for many years in medical device testing, evaluation and development and has worked as a medical advisor to a number of medical device companies. Professor Ryan has lectured in Europe, Asia and the USA and has been on faculty for international conferences for over two decades.

    • Fellow of The Royal College of Radiologists, London 1995 – Present
    • Fellow of The Faculty of Radiologists in The Royal College of Surgeons in Ireland
    • Fellow of The Cardiovascular and Interventional Radiological Society of Europe (FCIRSE)
    • Member of The Society of Interventional Radiology
    • Member of The Cardiovascular Interventional Society of Europe
    • Member of The Irish Society of Interventional Radiology
    • Member of The European Congress of Radiology
    • European Board Certification in Interventional Radiology
    • Director and Board Member of Operation Childlife
    • Fellow of The Dublin University Biological Association

Via Post to
St James's Hospital
Dublin 8