Prof. Dr. Nicolas M. van Mieghem

Advanced Structural Heart Imaging

Prof. Nicolas Van Mieghem obtained his medical degree and cardiology degree at the Catholic University of Leuven, Belgium. After subsequent fellowships in interventional cardiology at the Oost-Limburg Hospital in Genk, Belgium, the Lenox Hill Hospital, New York, USA, and the Erasmus Medical Center, Rotterdam, the Netherlands in February 2010, he joined the Department of Interventional Cardiology at the Thoraxcenter, Erasmus MC as a staff member. In 2019, he was appointed Full Professor of Interventional Cardiology.

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He is involved in the percutaneous coronary interventions program and has a particular focus on transcatheter heart valve interventions. Prof. Van Mieghem obtained his PhD around that same topic. So far, he published and co-authored over 350 scientific papers in peer-reviewed journals. Prof. Van Mieghem has been a Steering Committee member in multiple ongoing international trials evaluating various trans catheter valve technologies. Prof. Van Mieghem is a Fellow of the European Society of Cardiology (FESC) and currently Medical Director of the Department of Interventional Cardiology at the Thoraxcenter, Erasmus MC, Rotterdam.



Dr. Joost Daemen

Advanced Invasive Coronary Imaging

Dr. Joost Daemen, MD, PhD is a senior interventional cardiologist at the Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands. In 2005, he finished medical school at the Erasmus University Rotterdam. Between 2005 and 2008 he completed a PhD project entitled “The caveats of drug-eluting stents – a critical appraisal of the safety concerns”. After obtaining his PhD Cum Laude, he commenced his clinical training and interventional cardiology training at the Thoraxcenter in Rotterdam and partly at Inselspital in Bern, Switzerland.


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At present (2020), Dr. Daemen is participating in cathlab-related activities including complex PCI like the use of left ventricular assist devices, intracoronary imaging, cardiac physiology, and structural heart interventions including TAVI, Mitraclip and renal sympathetic denervation. Next to his clinical activities Dr. Daemen is highly active in cardiovascular research with a specific focus on intracoronary imaging and physiology, co-authored over 200 peer reviewed publications and is a fellow of the European Society of Cardiology (FESC).



Dr. Claire Ben Ren


Dr. Claire Ben Ren MD, PhD, is an imaging physician specialized in echocardiography in structural heart disease. She works in the interventional cardiology department of the Thoraxcenter, Erasmus Medical Center, since October 2014. Dr. Ren is mainly involved in echocardiography imaging in patients undergoing transcatheter heart valve interventions. She joined Cardialysis in 2014 and since July 2019, she is the Echo Core Lab Supervisor.

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Back in 2010, Dr. Ren graduated from the West China School of Medicine, Chengdu, China. While completing her training on transthoracic and transoesophageal echocardiography in the Cardiology Department of the West China Hospital, her research master focused on 3D echocardiography in aortic valve annulus quantification. She was awarded her PhD diploma in Cardiology at the Thoraxcenter, Erasmus Medical Center on 3D echocardiography for left ventricular function, mitral regurgitation and left atrial function and has authored 50+ articles in peer reviewed journals.


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Dr. Alexander Hirsch

Magnetic Resonance Imaging

Dr. Alexander Hirsch, MD, PhD is a cardiologist specialized in non-invasive imaging with the focus on cardiovascular magnetic resonance imaging (CMR). He is a staff member in the Thoraxcenter of the Erasmus MC since 2016.

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He studied Medicine at the University of Amsterdam and obtained his medical degree in 2003. He received his PhD degree (cum laude) in 2010 from the same University with a dissertation about “Clinical and functional outcomes after revascularization strategies in acute coronary syndromes”. He trained as a cardiologist at the Academic Medical Center in Amsterdam and registered as a cardiologist in 2013. He specialized further in non-invasive imaging with the focus on CMR and obtained his level 3 certification in CMR from the European Society of Cardiology in 2014. He joined the department of Cardiology and Radiology of the Erasmus MC in 2016. He is actively involved in patient care, education, and cardiovascular research. He (co)-authored 80+ publications published in peer-reviewed journals. His main research interests include CMR in ischemic and non-ischemic cardiomyopathy and the application of novel imaging techniques like T1-mapping and 4D flow. He is currently supervising multiple PhD students at the department of cardiology and radiology.



Dr. Sing-Chien Yap

ECG & Electrophysiology

Dr. Sing-Chien Yap, MD, PhD, FEHRA, is a cardiologist-electrophysiologist at the Erasmus MC, Rotterdam, the Netherlands and active member of the Netherlands Heart Rhythm Association (NHRA). His clinical activities include catheter ablations of arrhythmias (including Stereotaxis), CIED (cardiovascular implantable electronic device) implantations and lead extractions. In addition, he is responsible for the inherited arrhythmias outpatient clinic. He is an EHRA (European Heart Rhythm Association) certified cardiac device and electrophysiology specialist. 

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Back in 2004, Dr. Yap obtained his medical degree from the University of Utrecht. For his PhD research, he was granted an NWO (Dutch Research Council) MD Clinical Research Traineeship that in 2007 resulted in a PhD. A research fellowship (2009-2010) followed at the Division of Cardiac Electrophysiology, University Health Network, Toronto, Canada focused on catheter ablation of adults with congenital heart disease. Dr. Yap completed his training in cardiology and his clinical fellowship in cardiac electrophysiology at the Department of Cardiology, Erasmus MC. He authored 60+ articles in peer-reviewed journals. Main research topics included sudden cardiac death, ICD therapy and congenital heart disease. Currently, his research focuses on early detection and treatment of ventricular arrhythmias in high-risk populations. He is a Fellow of the European Heart Rhythm Association (FEHRA).



Dr. Dietrich Beitzke

Coronary Computed Tomography Angiography

Dr. Dietrich Beitzke obtained his medical degree at the Medical University of Graz, Austria. After a general medical education in Graz and his residency in radiology in Graz and Vienna he became board certified radiologist in 2014. Since then he acts head of the cardiovascular MR Unit at the Medical University of Vienna.


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In clinical routine Dr. Beitzke covers the whole spectrum of non-invasive Cardiovascular Imaging by CT, CMR and hybrid imaging. His scientific focus is on vascular inflammation and non-invasive imaging in the follow up after cardiac transplant. Dr. Beitzke has published and co-authored 60+ papers in peer reviewed journals in the field of cardiology and radiology. Currently he is head of the cardiovascular subgroup committee of the Austrian Roentgen Society.



Dr. Ernest Spitzer

Medical Director

Dr. Ernest Spitzer is a cardiologist trained in Zaragoza, Spain, with focus on cardiovascular research. Before joining Cardialysis in 2014, he completed advanced training in cardiovascular imaging in Vienna, Austria, and a research fellowship in interventional cardiology in Bern, Switzerland. Since February 2020, Dr. Spitzer is Medical Director at Cardialysis collaborating closely with the Core Lab supervisors, and involved in analysis approval for echocardiography, cardiac magnetic resonance imaging, and aortic valve imaging. 

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Dr. Spitzer graduated in 2004 with summa cum laude from the Catholic University of Saint Mary, Arequipa, Peru, and served two years at the Peruvian Armed Forces. He completed his cardiology training at the University Hospital Miguel Servet, Zaragoza, Spain. He has been recognized with a research fellowship from the European Association of Percutaneous Cardiovascular Interventions of the European Society of Cardiology and a research fellowship from the Spanish Society of Cardiology. In 2014, he completed a 4-year master program in statistics and research methodology at the Autonomous University of Barcelona. He has contributed with 50+ articles in peer-reviewed journals and is Board Member of the Academic Research Consortium since March 2019.