Biography
Dimitrios M. Klettas
Personal Information :
Address 1: Semitelou 5, Megaro Mousikis, 115 28, Athens, Greece
Address 2: Akakion 52, 151 25, Polydroso, Halandri
Phone numbers: +30 697 3348722, +30 2130909910
E-mail: dklettas@gmail.com
Ethnicity: Greek
Date of birth: 10.03.1978

CV:
January 2017-currently:
Cardiology Consultant in Hippokrateion Hospital (Medical School, University of Athens-Greece), with main interest in Cardiac Imaging ( TOEs-3D TOEs, DSEs, CMR, Cardiac CT, Valve Clinic, Clinical Cardiology) and Head of Cardiac MRI in AFFIDEA-Greece (private sector). From April 2021 I also work in the Metropolitan Hospital Athens ( under Prof P.Nihoyiannopoulos).
October 2015- January 2017:
Permanent Cardiology Consultant in Northampton General Hospital, with main interest in Cardiac Imaging ( TOEs-3D TOEs, DSEs, CMR, Cardiac CT, Valve Clinic, Clinical Cardiology) and CMR lists in Hammersmith Hospital.
August 2015-October 2015:
Cardiac MRI fellow in Brompton and Hammersmith Hospital with full CMR duties.
September 2014 – August 2015:
Senior Clinical Fellow in Cardiac Imaging with duties on Intra-procedural TAVI imaging, Cardiac MRI , Cardiac CT ,Stress Echo, 3D-TOE, Inherited Cardiac Diseases Clinics , Heart Failure Clinics and Endocarditis management and fully participating in the SpR on call rota , at King’s College Hospital , King’s College , London (under Prof M.Monaghan).
Cardiologist performing exercise treadmill test in Harley Street Clinic, London , UK.
September 2013- September 2014:
Clinical and Research fellow in Echocardiography ( 2D-TOE, 3D-TOE, Peri-operative TOE, Stress Echo, Valve Stress Echo, Exercise Stress Echo, 3D TTE, Bubble-Contrast Echo, CRT optimization, Endocarditis Team member, Heart failure outpatient clinics) in the Echocardiography Department at King’s College Hospital , King’s College , London (under Prof M.Monaghan).
Clinical fellow in the Princess Royal University Hospital ( 2D-TOE, 3D-TOE, Stress Echo, Exercise Stress Echo, Bubble-Contrast Echo, Valve Outpatient Clinics).
Cardiologist performing exercise treadmill test in Harley Street Clinic, London , UK.
May 2013- August 2013:
LAS StR Cardiology (Interventional Cardiology ,Electrophysiology ,Outpatient Clinics and Teaching to Cambridge Medical University students) in Papworth Hospital, Cambridge University, Cambridgeshire.
April 2012-May 2013:
-Clinical and Research fellow in Cardiac Imaging ( Stress Echo, 2D-TOE, 3D-TOE, 2D-TTE, 3D-TTE, Cardiac MRI, Outpatient Clinics, MSC students’ Supervisor and Teaching), in the Echocardiography Department at Hammersmith Hospital, Imperial College, London (Under Prof. Petros Nihoyannopoulos MD, PHD, FRCP, FESC).
-Attachment to St Mary’s Hospital Cardiac MRI Department (under Dr Ben Ariff, Consultant Radiologist).
November 2012-December 2012:
Locum SHO in Cardiology at Hammersmith Hospital.
January 2012-April 2012:
Cardiology specialist- Locum Consulatnt in Naval Hospital of Athens.
(TTEs, TOEs, Coronary Angiographies, SPECT, ETT, Inpatient ward round, Outpatient Clinics).
May 2010-December 2011:
Cardiology SpR at Naval Hospital of Athens (under Dr Anastasios Spanos MD, PHD, Head of Cardiology Department).
November 2009-May 2010:
Fellowship in the Echo Department at Hammersmith Hospital (2D-TTE, 3D-TTE, CRT Optimization), Imperial College, London (Under Prof. Petros Nihoyannopoulos MD,PHD,FRCP,FESC).
December 2007 – November 2009:
Cardiology SpR at Naval Hospital of Athens (Under Dr Anastasios Spanos).
October 2007 – December 2007:
Cardiology SpR at General Hospital of Rethimno,Crete (Under Dr F.Charokopos MD,PHD,Head of Cardiology Department).
May 2006- July 2007:
Internal medicine SpR at General Hospital “Amalia Fleming” (Under Dr M.Lelekis MD, PHD, Head of Internal Medicine Department).
March 2005 – April 2006:
Military service as SHO in Cardiology department at Naval Hospital of Athens and Naval Hospital of Crete.
January 2004- February 2005:
General Practitioner Service in Messinia region,Greece.
October 2003- January 2004:
Cardiology SHO and General Practitioner training at General Hospital of Kalamata (Under S.Zompolos MD,PHD,Head of Cardiology Department).
ADDITIONAL INFORMATION
June 2009 – May 2012:
Assistant in the Catheterization Laboratory (Coronary Angiography operator and assistant in Coronary Intervention )
Neo-Athinaion Hospital (Private Hospital)
Athens, Greece.
May 2010-May 2012:
-Greek Translation of the “Cardiac pacemakers and ICDs”, Kenneth A Ellenbogen (5th Edition)
-Greek Translation of some chapters of “ Cardiac Cathetheterization, Angiography and Intervention “, Grossman’s (7th Editition)
EDUCATION-ACADEMIC ACTIVITIES
July 2019:
Cardiac MRI Accreditation Level III (EACVI)
August 2015:
Cardiac MRI Accreditation Level III (SCMR)
April 2015:
Cardiac CT Accreditation Level I&II
Harefield Hospital
May 2013:
Cardiac MRI Accreditation Level I
King’s College London
March 2013:
European Accreditation in Adult Transoesofangheal Echocardiography
Echocardiography Association (EAE)
European Society of Cardiology
December 2012:
Completion of the Cardiology Specialty
October 2012:
Hellenic Cardiological Society Grant winner (12 months) for Cardiac Imaging in UK
October 2010:
European Accreditation in Adult Transthoracic Echocardiography
Echocardiography Association (EAE)
European Society of Cardiology
March 2016-August 2019:
PHD in the Medical School of the University of Athens.
Thesis title:” Clinical and biochemical predictors of the progression and development of the non-culprit lesions in the coronary arteries”
(under Prof C.Stefanadis MD,PHD, Head of the 1st Cardiology Department of Medical School of University of Athens , Hippocration Hospital ,Athens ,Greece )
October 2006-November 2008 :
Master of Science Degree in Coronary Care Unit (2 years)
Medical School of University of Athens, Athens, Greece.
April 2003:
Graduated as Doctor of General Medicine
Medical School of University of Athens, Athens, Greece.
Foreign languages:
Proficient in understanding, speaking, and writing the English language.
Basic in German language and French language.
RESEARCH
PUBLISHED PAPERS
- Echocardiographic and Cardiac Magnetic Resonance Imaging-Derived Strains in Relation to Late Gadolinium Enhancement in Hypertrophic Cardiomyopathy.Klettas D, Georgiopoulos G, Rizvi Q, Oikonomou D, Magkas N, Bhuva AN, Manisty C, Captur G, Aimo A, Nihoyannopoulos P.Am J Cardiol. 2022 May 15;171:132-139. doi: 10.1016/j.amjcard.2022.02.006. Epub 2022 Mar 16.PMID: 35305784
- Updated knowledge and practical implementations of stress echocardiography in ischemic and non-ischemic cardiac diseases: An expert consensus of the Working Group of Echocardiography of the Hellenic Society of Cardiology.Kadoglou NPE, Papadopoulos CH, Papadopoulos KG, Karagiannis S, Karabinos I, Loizos S, Theodosis-Georgilas A, Aggeli K, Keramida K, Klettas D, Kounas S, Makavos G, Ninios I, Ntalas I, Ikonomidis I, Sahpekidis V, Stefanidis A, Zaglavara T, Athanasopoulos G, Karatasakis G, Kyrzopoulos S, Kouris N, Patrianakos A, Paraskevaidis I, Rallidis L, Savvatis K, Tsiapras D, Nihoyannopoulos P.Hellenic J Cardiol. 2022 Mar-Apr;64:30-57. doi: 10.1016/j.hjc.2021.07.006. Epub 2021 Jul 28.PMID: 34329766 Free article. Review.
- Echocardiography versus computed tomography and cardiac magnetic resonance for the detection of left heart thrombosis: a systematic review and meta-analysis.Aimo A, Kollia E, Ntritsos G, Barison A, Masci PG, Figliozzi S, Klettas D, Stamatelopoulos K, Delialis D, Emdin M, Georgiopoulos G.Clin Res Cardiol. 2021 Nov;110(11):1697-1703. doi: 10.1007/s00392-020-01741-7. Epub 2020 Sep 13.PMID: 32920662
- Multi-Modality Imaging in Dilated Cardiomyopathy: With a Focus on the Role of Cardiac Magnetic Resonance.Mitropoulou P, Georgiopoulos G, Figliozzi S, Klettas D, Nicoli F, Masci PG.Front Cardiovasc Med. 2020 Jul 2;7:97. doi: 10.3389/fcvm.2020.00097. eCollection 2020.PMID: 32714942 Free PMC article. Review.
- Stress echocardiography: differences between practices in Greece. A survey of the Echocardiology Working Group of the Hellenic Society of Cardiology.Keramida K, Maniotis C, Makavos G, Papadopoulos CH, Stefanidis A, Georgilas AT, Beldekos DJ, Kouris N; working group of Echocardiology of the Hellenic Society of Cardiology.Hellenic J Cardiol. 2021 May-Jun;62(3):221-224. doi: 10.1016/j.hjc.2020.06.005. Epub 2020 Jun 30.PMID: 32619559 Free article. No abstract available.
- Arrhythmic risk stratification in nonischemic dilated cardiomyopathy: The ReCONSIDER study design – A two-step, multifactorial, electrophysiology-inclusive approach.Gatzoulis KA, Dilaveris P, Arsenos P, Tsiachris D, Antoniou CK, Sideris S, Kolettis T, Kanoupakis E, Sideris A, Flevari P, Vassilikos V, Kappos K, Maounis T, Katsivas A, Kotsakis A, Karvounis H, Kossyvakis C, Leventopoulos G, Kalpakos D, Tousoulis D; ReCONSIDER study Investigators.Hellenic J Cardiol. 2021 Mar-Apr;62(2):169-172. doi: 10.1016/j.hjc.2020.03.008. Epub 2020 Apr 21.PMID: 32330568 Free article. No abstract available.
- Enterococcus faecium purulent pericarditis with transient constriction.Lazaros G, Kalos T, Georgakopoulos C, Laina A, Aznaouridis K, Klettas D, Latsios G, Antonopoulos AS, Vlachopoulos C, Tousoulis D.Hellenic J Cardiol. 2021 Jan-Feb;62(1):92-94. doi: 10.1016/j.hjc.2020.03.004. Epub 2020 Apr 21.PMID: 32330567 Free article. No abstract available.
- Noncardioembolic Stroke in Patients with Atrial Fibrillation.Katsi V, Georgiopoulos G, Skafida A, Oikonomou D, Klettas D, Vemmos K, Tousoulis D.
Angiology. 2018 Jul 31:3319718791711. doi: 10.1177/0003319718791711. [Epub ahead of print]
PMID: 30064257
Similar articlesSelect item 28249937
- Is transnasal TEE imaging a viable alternative to conventional TEE during structural cardiac interventions to avoid general anaesthesia? A pilot comparison study of image quality.Klettas D, Alcock E, Dworakowski R, MacCarthy P, Monaghan M.
Echo Res Pract. 2017 Mar;4(1):1-7. doi: 10.1530/ERP-16-0029. Epub 2017 Mar 1.
PMID: 28249937
Free PMC ArticleSimilar articlesSelect item 28212870
- The -174 G>C Interleukin-6 Gene Polymorphism is Associated with Angiographic Progression of Coronary Artery Disease over a 4-Year Period.Toutouzas K, Klettas D, Anousakis-Vlachochristou N, Melidis K, Azilazian Z, Asimomiti M, Karanasos A, Spanos A, Tsiamis E, Nihoyannopoulos P, Tousoulis D.
Hellenic J Cardiol. 2017 Jan – Feb;58(1):80-86. doi: 10.1016/j.hjc.2017.02.002. Epub 2017 Feb 15.
PMID: 28212870
Free ArticleSimilar articlesSelect item 27249816
- Clinical utility of speckle-tracking echocardiography in cardiac resynchronisation therapy.Khan SG, Klettas D, Kapetanakis S, Monaghan MJ.
Echo Res Pract. 2016 Mar;3(1):R1-R11. doi: 10.1530/ERP-15-0032. Epub 2016 Mar 8. Review.
PMID: 27249816
Free PMC ArticleSimilar articles
Select item 22538335
- First in vivo application of microwave radiometry in human carotids: a new noninvasive method for detection of local inflammatory activation.Toutouzas K, Grassos C, Drakopoulou M, Synetos A, Tsiamis E, Aggeli C, Stathogiannis K, Klettas D, Kavantzas N, Agrogiannis G, Patsouris E, Klonaris C, Liasis N, Tousoulis D, Siores E, Stefanadis C.
J Am Coll Cardiol. 2012 May 1;59(18):1645-53. doi: 10.1016/j.jacc.2012.01.033.
PMID: 22538335
Free ArticleSimilar articles
ABSTRACTS
- American Heart Association Annual Scientific SessionsAbstract 5337: “Morphological Characteristics of the Culprit Lesion Correlate With the Angiographic Flow Grade Following Thrombolysis in Myocardial Infarction. An Optical Coherence Tomography Study”Antonis Karanasos, Konstantinos Toutouzas, Maria Drakopoulou, Andreas Synetos, Maria Riga, Eleftherios Tsiamis, Dimitrios Klettas, Costas Tentolouris, Elli Stefanadi, and Christodoulos StefanadisCirculation, Nov 2009; 120: S1087.
- European Society of Cardiology Annual Scientific SessionsAbstract 88849: “Polymorphism in the promoter of the CRP gene is associated with increased risk of acute coronary syndromes”.
- Klettas1, K. Toutouzas1, A. Synetos1, A. Karanasos1, CH. Patsa1, A.Spanos1, E.Tsiamis1, D.Tousoulis1, C.Stefanadis1 – Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
- TCT 2011“Serum levels of matrix metalloproteinases (MMP-9) can be predictive for the progression of non-culprit lesions in patients with coronary artery disease”. Klettas D., Toutouzas K., Synetos A., Karanasos A., Patsa Ch., Spanos A., Tousoulis., Tsiamis E., Stefanadis C.- Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
- ICAD 2011“Patients with STEMI and complex morphology of non culprit lesions have increased risk for a new intervention after successful” A. Synetos, K. Toutouzas, A. Karanasos, D. Klettas, E. Tsiamis, C. Stefanadis,-Hippokration Hospital, University of Athens, 1st Department of Cardiology, Athens, Greece
- 4th International symposium of Kallikreins“Expression analysis of Kallikrein-related peptidases in human carotid atherosclerotic lesions”.Kontos C, Klettas D.,Toutouzas K,.Ageli C.,Katsargyris A., Klonaris C.,Scorilas A. – Biology and Biochemistry University of Athens, Greece.
- European Stroke Conference 2014“A rare cardiac embolic cause for Ischemic Stroke-Fibroelastoma ”
- Gaba, T. Irani, A. Bhala,D.Klettas –King’s College Hospital .References available upon requestDimitris Klettas MD , MSc, PHDCardiology ConsultantCardiac Imaging specialist