Matthias Radatz FRCS MD

Mr Radatz was educated at the Free University, Berlin continuing his training to become a Fellow of the Royal College of Surgeons specialising in Neurosurgery.

He is currently the Clinical Director of the National Centre for Stereotactic Radiosurgery and is  a Consultant Neurosurgeon and Spinal Surgeon and Honorary Senior Clinical Lecturer in Neurosurgery at the Royal Hallamshire Hospital. He has been the Chair of the NHS England Clinical Reference Group for Stereotactic Radiosurgery and lead clinician for neurosurgery at the Royal Hallamshire and Programme Director Neurosurgery South Yorkshire and Humber Deanery. He is a member of the Society of British Neurological Surgeons, British Medical Association, British Acoustic Neuroma Association, Hospital Consultants and Specialists Association and the Leksell Gamma Knife Society and a Trustee of the Neurocare Charity fund.


Andras A Kemeny FRCS MD

Mr Kemeny was Director of the National Centre for Stereotactic Radiosurgery from 2000-2014 and was elected as President of the European Gamma Knife Society in 2001.He was elected twice to Council of the Society of British Neurological Surgeons.  He has represented UK neurosurgery at the World Federation of Neurological Surgeons, at the European Association of Neurosurgical Societies as well at the European Union of Medical Specialists (UEMS).

He graduated “Summa Cum Laude” from Semmelweis University Medical School in Budapest, Hungary in 1977. As a postgraduate he first worked as a Research Fellow in neuro-anatomy, before joining the Neurosurgical training Program at the National Institute of Neurosurgery, Budapest. His training continued in England from 1982.  Apart from a three-year period in St. Bartholomew’s Hospital, London and Oldchurch Hospital, Romford as a Neurosurgery Senior Registrar, he worked mainly in the Departments of Neurosurgery and Neurology in Sheffield, at the Royal Hallamshire Hospital.  During this time he received his first training in Gamma Knife Surgery with David Forster.

He became Fellow of the Royal College of Surgeons and Physicians of Glasgow in 1988. He received a postgraduate doctorate at Sheffield University in 1991 and in the same year was appointed in Sheffield as Consultant Neurosurgeon and Honorary Senior Lecturer at the University of Sheffield.

He was the founder neurosurgeon of the Sheffield Epilepsy Surgery Programme and one of the UK pioneers of Vagus Nerve Stimulation for epilepsy.He is an Author of over 80 peer reviewed papers and several book chapters, the majority in the field of Gamma Knife Radiosurgery. He has lectured on European Training Courses and frequently is an as invited speaker, mostly on radiosurgery at international conferences.


Jeremy Rowe MA DM FRCS(SN)

After qualifying from Oxford University in 1988, Mr Rowe continued to practice in Oxford and East Anglia becoming a fellow of the Royal College of Surgery of England in 1992.

Whilst undertaking his Neurosurgical training at the Radcliffe Infirmary, Oxford, he began to use an image-guided surgical approach after studying Magnetic Resonance as part of his MRC research fellowship at Oxford University. This lead him to begin to develop an interest in the field of Stereotactic functional neurosurgery.

In 2001 to gain clinical experience in Stereotactic Radiosurgery he took a post at the Royal Hallamshire Hospital, Sheffield, and was subsequently appointed as a Neurosurgery/Stereotactic Radiosurgery Consultant in 2002. During his time at The National Centre for Radiosurgery he has generated and published research into the technique, which has resulted in an award from the International Stereotactic Radiosurgery Society.


John Yianni MA FRCS(SN)

Mr Yianni has worked at Sheffield Teaching Hospitals since 2001 initially as a Clinical Research Fellow in Neurosurgery with experience in Stereotactic Functional Neurosurgery from 2001-2004. This was followed by an appointment as Specialist Registrar from 2004-2009 in Neurosurgery. He worked as a Clinical Research Fellow in Neurosurgery with experience in Stereotactic Functional Neurosurgery from 2001-2004. gaining experience in framed and frameless stereotaxy and functional neurosurgery. He became the Fellow in Stereotactic Radiosurgery and Functional Neurosurgery in 2009 until becoming a consultant in 2011.

Dev Bhattacharyya MB BS, FRCSEd, FRCS (Neurosurgery)

Mr Bhattacharyya is a Consultant Neurosurgeon at the Royal Hallamshire Hospital. He qualified in India as a doctor
and completed all of his post-graduate training in the UK.  He also completed fellowships in both Germany and the USA. His speciality is General Neurosurgery but his clinical interests are varied including stereotactic radiosurgery, trigeminal neuralgia, epilespy, degenerative and spinal surgery,  performing instrumented fusion and key-hole surgery.

Ramez Ibrahim 

Mr Ibrahim was awarded practising privileges at The Thornbury Radiosurgery Centre and appointed as a consultant neurosurgeon at Sheffield Teaching Hsopitals NHS Foundation Trust in 2017. His medical education was undertaken in Egypt where he became a consultant neurosurgeon in Giza and at Cairo University before undertaking various senior clinical fellow roles in neurosurgery, orthopaedic spinal, stereotactic radiosurgery and skull base in Cardiff, Oxford and Sheffield.