A/Prof Raj Puranik


AProf Raj Puranik MB BS PhD FRACP was a Neil Hamilton Fairley NHMRC/NHFA Post-doctoral Fellow in cardiovascular magnetic resonance. He is now a Consultant in Cardiovascular MR at RPAH, Specialist MRI, Westmead Children's Hospital and University of Sydney.

His training was completed at Centre for Cardiovascular MR at University College London and Great Ormond St Hospital for Children from 2006-2008.

Since A/Prof Puranik’s return from London, he has established CMRS which has developed research programs and has performed 4000 cardiac scans since 2008 (approx 450-500 per annum). A/Prof Puranik runs a Level III co-reporting model with radiologists with synergistic interests.

A/Prof Puranik has trained over 20 clinical or research fellows over the past 10years in various aspects of CMR. His research interests have focussed on Congenital heart disease, with a recent priority to exercise MR techniques. 

Dr Preeti Choudhary

Dr Preeti Choudhary (BSc (Medicine) MBBS (Hons 1) FRACP) completed her clinical cardiology training at Westmead Hospital, Sydney. 



She received the Cardiac Society of Australia and New Zealand Postgraduate scholarship, the National Heart Foundation and NHMRC Post-graduate scholarship. 

Her PhD was based on assessing the prevalence and significance of LV non-compaction cardiomyopathy in congenital heart disease.  She started at CMRS as a research fellow in 2012 and worked as a clinical fellow in 2014. 

She completed her fellowship in adult congenital heart disease at The Heart Hospital and St Bartholomew’s Hospital in London and then a fellowship in cardiac MRI at Great Ormond Street Hospital in London. Preeti is a consultant cardiologist at Westmead Private Hospital and a CMR consultant at SMRI.    


Dr Chi-Jen Hsu

Dr Chi-Jen Hsu (MBBS, BSc(Med)(Hons), MMed, FRACP) completed his clinical cardiology training at the Royal Prince Alfred Hospital (RPAH), Sydney.


He carried out stem cell research for his PhD, and was the national finalist for the Ralph Reader Prize on cardiac research. In 2011 he started subspecialty Cardiovascular MRI training, mostly on congenital heart diseases, at CMRS and RPAH.


In 2012 he undertook a CMR fellowship at The Heart Hospital of University College London (UCL), where he was involved in stress myocardial imaging, and imaging of complex cardiomyopathy patients from Inherited Cardiovascular Disease Centre at The Heart Hospital.


He has scanned and reported 500 scans during his fellowship years, and is a Level 3-trained CMR physician. He is an honorary cardiologist at RPAH and Blacktown hospital, and a CMR consultant at RPAH, SMRI and Heartscan Australia.

Nathan Malitz
BAppSc (Diag Rdy), Post Grad Dip (MRI)

Nathan finished his undergraduate degree at the University of Sydney in 2001 and most recent post graduate degree at the University of Queensland.

He brings a wealth of on the ground experience to the CMRS team from webmaster to integrated education seminars.


Nathan's valuable resources allow CMRS to run smoothly in the background. He also performs Cardiac MRI consultancy for optimising sequences, preparation and timing.

                              Dr Mark Dennis 
                              MBBS (Hons) FRACP PhD 


                                             After completing his cardiology training at Royal                                                         Prince Alfred Hospital, Mark has gone on to                                                                 complete a PhD in Adult Congenital Heart Disease                                                     for which he was awarded a RTP and the CSANZ      

                                             Paediatric & Congenital Council Travelling Scholarship.

He gained his Level III Society of Cardiac Magnetic Resonance (SCMR) fellowship at Specialist MRI Imaging, Royal Prince Alfred Hospital and Westmead Children’s Hospital, Sydney Australia through CMRS.  Mark’s imaging interests lie in congenital heart disease, the use of cMRI in identifying subclinical disease and multi-modality imaging with cMRI. He has completed further advanced imaging training in CT and the Diploma of Diagnostic Ultrasound (DDU).


Mark is a Clinical Senior Lecturer at the University of Sydney, reporting cardiologist at sMRI, Honorary Visiting Medical Officer at Royal Prince Alfred Hospital, Clinical Imaging Cardiologist at Macquarie University Hospital and author of 2 clinical medicine textbooks