Dr Ratnam qualified from the University of Sheffield in 1998. She completed her radiology specialist training at St George's Hospital, followed by subspecialty training in interventional radiology at St George's and a further year at the Charles Gairdner Hospital in Perth, Australia. She was appointed a consultant radiologist at St George’s Hospital in April 2009. She also holds the European Board of Interventional Radiology certification.

She is a member of the St George’s LAVA (Lymphatic and ArterioVenous Anomaly) MDT, working closely with colleagues in Dermatology, Genetics and Plastic Surgery to provide a comprehensive service to patients with lymphatic and venous anomalies. She is currently involved in the development of an MR lymphangiography service at St George’s in collaboration with the Lymphatic Research team.

Other professional commitments:

• Chair of the Scientific Programme Committee of the British Society of Interventional Radiology 2020

• Editorial Board for Cardiovascular and Interventional Radiology Endovascular Journal

• Interventional Radiology Faculty member for the London School of Radiology

• Interventional Radiology Sub Committee Member for the European Congress of Radiology.

Dr Ratnam has published in a range of interventional radiology procedures and techniques.  Her current focus is on the development of treatments and diagnosis for lymphatic and venous anomalies.

Publications in peer-reviewed journals

1. Prospective Non-randomized Trial of Manual Compression, Angioseal and Starclose Arterial Closure Devices In Common Femoral Punctures

   L.Ratnam, J. Raja, G.Munneke, R. Morgan, A.M.Belli, St.George’s Hospital, Ldn

   CardioVascular and Interventional Radiology, 2007; 30(2): 182-188.

   *4^th most cited article for CVIR 2007

2. Investigating progressive unexplained renal impairment and hypertension

   L A Ratnam, S R Nelson, A M Belli ; St.George’s Hospital, Ldn

   British Medical Journal; 2007; 335:1094-1096.

3. Arterial Closure Devices – a review.

   J B Madigan, L A Ratnam ,A M Belli ; St.George’s Hospital, Ldn

   J Cardiovasc Surg; 2007; 48(5): 607-24.

4. The Amplatzer Vascular Plug For Large Vessel Occlusion In The Endovascular Management Of Aneurysms

   LA Ratnam, RM Walkden, GJ Munneke, RA Morgan, AM Belli; St.George’s Hospital, Ldn

   Eur Radiol. 2008 Sep;18(9):2006-12. Epub 2008 Apr 17.

5. Percutaneous renal intervention: comparison of 2D and time resolved 3D (4D) ultrasound for minimal calyceal dilation using an ultrasound phantom and fluoroscopic control

   BS John, D Rowland, L Ratnam, M Walkden, S Nayak, U Patel, K Anson, D Nassiri

   Ultrasound Med Biol; 2008; Nov;34(11):1765-9. Epub 2008 May 15.

6. Transcatheter pelvic arterial embolization for control of obstetric and gynaecological haemorrhage.

   L A Ratnam, M Gibson, C Sandhu, P Torrie, E Chandraharan, A M Belli; St George's Hospital, Blackshaw Rd, Ldn; Royal Berkshire Hospital, London Rd, Reading;Guy's and St Thomas' Hospital, St Thomas Street, Ldn.

   J Obstet Gynaecol; 2008 Aug; 28(6):573-9.

7. Nephrostomy — why, how, and what to look out for.

   A Horton, LA Ratnam, JB Madigan,  U Patel; St.George’s Hospital, Ldn

   Imaging, March 2008; 20:29-37.

8. Pelvic Vein Embolisation in the Management of Varicose Veins

   LA Ratnam, PMarsh, J Holdstock, C Harrison, FHussain, M Whiteley, AJ Lopez;

   St George’s Hospital, Ldn; The Whiteley Clinic, Guildford; The Royal Surrey County Hospital, Guildford, UK

   Cardiovasc Intervent Radiol, 2008 Nov-Dec;31(6):1159-64.

9. Intra-operative DynaCT improves technical success of endovascular repair of abdominal aortic aneurysms.

   Biasi L, Ali T, Ratnam LA, Morgan R, Loftus I, Thompson M; St.George’s Hospital, Ldn.

   J Vasc Surg; 2009 Feb;49(2):288-95.

10. Outcome of aortoiliac, femoropopliteal and infrapopliteal endovascular interventions in lesions categorised by TASC classification.

    Ratnam*, S.A. Raza, A. Horton, J. Taylor, G. Markose, G. Munneke, R. Morgan, A.-M. Belli; St.George’s Hospital, Ldn.
    Clin Rad, 2012 (67): 949-954.

11. Embolization of the internal iliac artery before EVAR: Is it effective? Is it safe?

    JY Chun, L Mailli, MA Abbasi, AM Belli,M Gonsalves, G Munneke, L Ratnam, IM Loftus, R Morgan; St.George’s  Hospital, Ldn.

    Cardiovasc Intervent Radiol, 2014 Apr;37(2):329-36

12. Embolization of a Mesenteric Arteriovenous Fistula.

    Huang IKH, Renani SA, LA Ratnam, R Morgan; St.George’s Hospital, Ldn

    JVIR, 2018; 29:218

13. Management of Acute and Chronic Iliofemoral Venous Outflow Obstruction: A Multidisciplinary Team Consensus. Phlebology.2018 

14. Acute mesenteric ischaemia: imaging and intervention.

    LA Ratnam, B  Hawthorn.

    Clin Rad 2019

15. Predicting the fibroid-migratory impact of UAE: role of pre-embolization MRI characteristics.

    Mailli L, Auyoung EY, Ang A, Renani SA, Ratnam L, Das R, Chun JY, Das S, Manyonda I, Belli AM.

    Cardiovasc Intervent Radiol, 2019

Book chapters

1. MDCT for renal mass evaluation

   L.Ratnam, E.Goldstraw, E.Wood, U.Patel; St.George’s Hospital, Ldn

   Advances in MDCT: An international literature review service: Abdominal and genitourinary imaging; 2007; 3(3):16-24.

2. Percutaneous Closure of Large Vessels.

   L.Ratnam, G.Munneke, ; St.George’s Hospital, Ldn

   Endovascular Intervention for Vascular Disease: Principles and Practice. Thompson M, Morgan R, Matsumara J, Sapoval M, Loftus I (eds); Informa Healthcare, USA. 2008; 489-499.

3. Cutting balloon angioplasty- is there a role in peripheral vascular disease

   Consensus in vascular and endovascular therapy (2008)

   MJ Bratby, L Ratnam, R Morgan.

4. Complications of Embolotherapy. L Ratnam, R Morgan.

   Transcatheter Embolization and Therapy. 2009.p 121 – 128. Kessel D, Ray C (Eds). Springer-Verlag London Limited 2010.

5. Post transplant diagnostic imaging.

   L Ratnam, U Patel

   Handbook of Renal and Pancreatic Transplantation. MacPhee I, Fronek J (eds); John Wiley & Sons, UK. June 2012; 297-316.

6. Editor of book: Managing Common Interventional Radiology Complications; A Case Based Approach. Springer-Verlag London 2014.

   L Ratnam, U Patel, AM Belli (eds)

7. Management of Post Partum Haemorrhage. Sept 2019

   L Ratnam, S Protto.

   CIRSE E-Learning module for CIRSE academy

Postgraduate

• Educational Supervisor in Radiology.

• Clinical Supervisor in Radiology.

Undergraduate

• Supervisor for Special Study projects in T year and F year.

• Radiology lectures for medical school.

• Personal tutor.