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The London Clinic
Dr Athanasios (Thanos) Diamantopoulos is a board certified Diagnostic and Interventional Radiology Consultant and Honorary Clinical senior lecturer who distinguishes himself by performing cutting-edge, minimally invasive vascular, non-vascular and all aspects of interventional oncology procedures (diagnostic, palliative and therapeutic).

Specialties and sub-specialties

Interventional Radiology
Interventional Oncology


Professional profile

Dr Athanasios (Thanos) Diamantopoulos is a Consultant Interventional Radiologist at Guy’s and St Thomas' and a Senior Clinical Lecturer (Hon) at King’s College London. He qualified in 2004 from the medical school of University of Patras in Greece. He holds a PhD in experimental prevention of contrast induced nephropathy.

He has been trained in all aspects of general and interventional radiology and he has completed a fellowship at Guy’s and St Thomas prior to been appointed as a consultant at the same hospital. He has been board certified by the European Board of Interventional Radiologists (EBIR) and is the current clinical lead for Interventional Radiology at Guys and St Thomas Interventional Radiology Department.

Dr Diamantopoulos has authored or co-authored many peer-reviewed original scientific papers and book chapters. In addition, he has given many scientific presentations and is regularly invited as a lecturer in National and International conferences. He is the primary investigator (PI) and co-investigator in numerous studies and has been recognised as a Fellow of the Cardiovascular and Interventional Radiology Society of Europe (FCIRSE) for his significant contribution in interventional radiology and cardiovascular imaging. Since 2019 he serves as an elected member in the research committee of CIRSE.

He specialises in minimally invasive, image guided vascular, non-vascular and interventional oncology procedures both in adults and children. He distinguishes himself by performing cutting-edge procedures that include all aspects of basic and advanced interventional radiology procedures with a special focus in:

  • Interventional Oncology
  • ablation of solid tumours
  • image guided biopsies and drainages,
  • venous access (i.e. Port, PICC, Hickman lines, tunnelled and non-tunnelled central venous catheters),
  • Arterial vascular interventions including treatment of the diabetic foot
  • Venous treatments
  • embolization including varicocele and fibroid embolizations etc.

In an effort to deliver the best possible results, Dr Diamantopoulos likes to incorporate the latest technological advances into his treatment methods such as drug eluting technologies, carbon dioxide angiography, the latest atherectomy techniques and all the newest ablation technologies

Clinical interests

  • Cross-sectional and ultrasound imaging
  • General diagnostic imaging
  • Vascular and no vascular intervention

Current posts

  • Consultant diagnostic and Interventional Radiologist
    Guy’s and St Thomas' NHS Foundation Trust

Current teaching posts

  • Honorary Senior Clinical Lecturer
    Kings College London

Medical training

Year qualified 2004
  • University of Patras Medical School, Greece 1998 - 2004

Languages spoken


Personal interests

My main interests are reading, music playing basketball and travelling.