Imperial College London

Dr Tarun K Mittal MD, FRCR, MSc, FSCCT

Faculty of MedicineNational Heart & Lung Institute

Honorary Clinical Senior Lecturer



+44 (0)1895 828 609t.mittal




Dept of Medical ImagingHarefield HospitalHarefield Hospital





Dr Tarun K Mittal completed his medical training and post-graduation in J N Medical College in India followed by 3-years senior residency in diagnostic and interventional radiology at Apollo Hospitals in Chennai, India. He subsequently came to UK in 1995 and underwent specialist training in Clinical Radiology with sub-specialisation in Cardiovascular and Interventional Radiology at University Hospital of Wales leading to CCST in 1999. His passion in Cardiac Imaging led him to do further fellowship training at the Yorkshire Heart Centre in Leeds. He was appointed as a Consultant Cardiothoracic Radiologist at the Royal Brompton and Harefield NHS Foundation Trust in 2002 to develop and lead the cardiovascular MRI service at Harefield Hospital. In the same year he was granted an honorary Senior Clinical Lecturer position at the Faculty of Medicine at the National Heart and Lung Institute, Imperial Medical College, London.

Dr Mittal has led the development of both cardiac MRI and CT services at Harefield Hospital since 2002. He was the Head of Imaging Department from 2006 to 2011 and undertook various responsibilities including Chairman of Radiation Protection Committee till 2016. In 2014-15, Dr Mittal undertook a master’s course (MSc) in Preventive Cardiology at Imperial College, London.

On-going areas of research

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  • Cardiac CT in aortic valve stenosis (CTAV) study evaluating the diagnostic and prognostic valve of cardiac CT.
  • Mindfulness in patients with non-cardiac chest pain (MIPIC) study - a randomised controlled trial
  • UK COVID-19 Cardiovascular CT Risk Assessment Consortium Study
  • Cardiac CT and MRI in patients with suspected low-flow low-gradient aortic stenosis.
  • Cardiac CT in patients with heart transplantation.

Recent Publications

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Mittal TK, Reichmuth L, Bhattacharyya S, Jain M, Baltabaeva A, Rahman Haley S, Mirsadraee S, Panoulas V, Kabir T, Nicol ED, Dalby M, Long Q. Inconsistency in aortic stenosis severity between CT and echocardiography: prevalence and insights into mechanistic differences using computational fluid dynamics. Open Heart. 2019;6(2):e001044. doi: 10.1136/openhrt-2019-001044. eCollection 2019. PubMed PMID: 31413845; PubMed Central PMCID: PMC6667934.

Mittal TK, Cleghorn CL, Cade JE, Barr S, Grove T, Bassett P, Wood DA, Kotseva K. A cross-sectional survey of cardiovascular health and lifestyle habits of hospital staff in the UK: Do we look after ourselves?. Eur J Prev Cardiol. 2018 Mar;25(5):543-550. doi: 10.1177/2047487317746320. Epub 2017 Dec 4. PubMed PMID: 29198137; PubMed Central PMCID: PMC5833024.

Mittal TK, Pottle A, Nicol E, Barbir M, Ariff B, Mirsadraee S, Dubowitz M, Gorog DA, Clifford P, Firoozan S, Smith R, Dubrey S, Chana H, Shah J, Stephens N, Travill C, Kelion A, Pakkal M, Timmis A. Prevalence of obstructive coronary artery disease and prognosis in patients with stable symptoms and a zero-coronary calcium score. Eur Heart J Cardiovasc Imaging. 2017 May 1;18(8):922-929. doi: 10.1093/ehjci/jex037. PubMed PMID: 28379388; PubMed Central PMCID: PMC5837484.

Mittal TK, Reichmuth L, Ariff B, Rao PP, Baltabaeva A, Rahman-Haley S, Kabir T, Wong J, Dalby M. Imaging diagnoses and outcome in patients presenting for primary angioplasty but no obstructive coronary artery disease. Heart. 2016 Nov 1;102(21):1728-1734. doi: 10.1136/heartjnl-2015-309039. Epub 2016 Jul 1. PubMed PMID: 27368743; PubMed Central PMCID: PMC5099205.

Bhattacharyya S, Mittal T, Abayalingam M, Kabir T, Dalby M, Cleland JG, Baltabaeva A, Rahman Haley S. Classification of Aortic Stenosis by Flow and Gradient Patterns Provides Insights into the Pathophysiology of Disease. Angiology. 2016 Aug;67(7):664-9. doi: 10.1177/0003319715611804. Epub 2015 Oct 15. PubMed PMID: 26475710.

Callington A, Long Q, Mohite P, Simon A, Mittal TK. Computational fluid dynamic study of hemodynamic effects on aortic root blood flow of systematically varied left ventricular assist device graft anastomosis design. J Thorac Cardiovasc Surg. 2015 Sep;150(3):696-704. doi: 10.1016/j.jtcvs.2015.05.034. Epub 2015 May 15. PubMed PMID: 26092505.

Torii R, Ibrahim M, Mittal T, Lee SL, Yacoub MH. The wide spectrum of aortic root dilatation after the Ross operation. Glob Cardiol Sci Pract. 2014;2014(1):49-50. doi: 10.5339/gcsp.2014.9. eCollection 2014. PubMed PMID: 25054120; PubMed Central PMCID: PMC4104378.

Mittal TK, Nicol ED, Harden SP, Roobottom CA, Padley SP, Roditi G, Peebles CR, Taylor A, Hamilton MC, Morgan-Hughes GJ, Bury RW. The national evolution of cardiovascular CT practice: a UK NHS perspective. Int J Cardiol. 2013 Oct 3;168(3):3001-3. doi: 10.1016/j.ijcard.2013.04.005. Epub 2013 Apr 30. PubMed PMID: 23639456.

Mittal TK, Panicker MG, Mitchell AG, Banner NR. Cardiac allograft vasculopathy after heart transplantation: electrocardiographically gated cardiac CT angiography for assessment. Radiology. 2013 Aug;268(2):374-81. doi: 10.1148/radiol.13121440. Epub 2013 May 8. PubMed PMID: 23657888.