Best Gamma Knife Doctors in Istanbul for Australians

Professor Mehmet Osman Akcakaya is a highly specialized neurosurgeon who completed a prestigious clinical fellowship in stereotactic and functional neurosurgery at Hannover Medical School in Germany.

• Specialises in precise Gamma Knife radiation for complex brain conditions
• Expert in microsurgery of peripheral nerves following advanced training in Tel Aviv
• Professor at Demiroglu Bilim University Medical Faculty, training the next generation of surgeons
• Leads the neurosurgery team at the JCI-accredited Florence Nightingale Hospital
• Maintains a strong focus on functional neurosurgery and neurological restoration

Neurosurgery Training: Gazi University, Department of Neurosurgery, 2011 

H index: 10, I10 Index: 12 Citations: 296

 Dr Mehmet Tonge has international and nationwide 32 publications, 12 book chapters, 92 oral and poster presentations and 41 invited lectures, mostly on Stereotactic and Functional Neurosurgery. 

Work & Training experience:

2004-2011: Gazi University, Department of Neurosurgery (Residency)

 2008: Zurich University Hospital, Department of Neurosurgery (Intraoperative MRI applications), Switzerland 

2008: Zurich University Hospital, Department of Neurosurgery: Microneurosurgery, white matter dissection, interventional neuroradiology courses, Switzerland 

2011 – 2012: Sinop Ataturk State Hospital, Neurosurgeon

 2012 – 2013: Cankiri State Hospital, Neurosurgeon 

2013 – 2014: Istanbul Medipol University, Department of Neurosurgery & Gamma Knife Center (Ass Prof) 

2013 – now: Maastricht University Neurosurgery & Neuroscience Department (Visiting scientist, PhDc) The Netherlands 

2014: Maastricht University, The Netherlands: Deep Brain Stimulation Fellowship 2014-2018: Istanbul Memorial Hospital Neurosurgery: Staff Neurosurgeon

 2016-2018: Istanbul Florence Nightingale Hospital (Consultant, Gamma Knife Center) 

2018-now: Istanbul Medipol University (Stereotactic & Functional Neurosurgery, Gamma Knife Center) Ass. Prof.) 

Dr Mehmet Tonge has completed 4-year cycle EANS (European Association of Neurosurgical Societies) Training courses. 

Clinical areas of interest:

 • Stereotactic & Functional Neurosurgery

 • Surgery for movement disorders

• * MR Guided Focused Ultrasound (MRgFUS)

 • Gamma Knife Radiosurgery 

• Surgery for pain & spasticity 

• Psychosurgery

Research areas of interest: 

• Deep brain stimulation

• * MR Guided Focused Ultrasound (MRgFUS)

 • Stereotactic radiosurgery 

Administrative duties:

 • Turkish Neurosurgical Society, Sterotactic & Functional Neurosurgery Section: Board member 2015- 2017 

• Turkish Neurosurgical Society, Sterotactic & Functional Neurosurgery Section: Board member (Secretary) 2017-2019

 • Turkish Skull Base Society: Board member 2016-2018

 • Turkish Skull Base Society: Supervisory board member 2018-2020

 • Deep Brain Stimulation and Movement Disorders Surgery Society: Executive Board Member, (Accountant) 2023-still 

Memberships: 

• WSSFN (World Stereotactic & Functional Neurosurgery Society) 

• ESSFN (European Stereotactic & Functional Neurosurgery Society)

 • Deep Brain Stimulation and Movement Disorders Surgery Society

 • Deep Brain Stimulation Society 

• International Stereotactic Radiosurgery Society 

• Leksell Gamma Knife Society 

• EANS (European Association of Neurosurgical Societies) 

• Turkish Neurosurgical Society

• Turkish Skull Base Society

Sample Publications: 

1. Tonge M. Technological developments in electric based DBS. Deep Brain Stimulation 2024 4(36-41) DOI: https://doi.org/10.1016/j.jdbs.2023.12.001 

2. Akgul E, Onan HB, Islek I, Tonge M, Durmus Y, Barburoglu M, Azizova A, Erol C, Hakyemez B, Sencer S, Aydin K, Arat A. Flow diverter stents in the treatment of recanalized intracranial aneurysms. Interv Neuroradiol. 2021 Aug;27(4):481-489. doi: 10.1177/1591019921990507. Epub 2021 Jan 28. PMID: 33509011; PMCID: PMC8580529. 

3. Mulders AEP, Temel Y, Tonge M, Schaper FLWVJ, van Kranen-Mastenbroek V,Ackermans L, Kubben P, Janssen MLF, Duits A. The association between surgical characteristics and cognitive decline following deep brain stimulation of the subthalamic nucleus in Parkinson's disease. Clin Neurol Neurosurg. 2021 Jan;200:106341. doi: 10.1016/j.clineuro.2020.106341. Epub 2020 Nov 3. PMID: 33160716. 

4. Wetzelaer P, Vlis T, Tonge M, Ackermans L, Kubben P, Evers S, Kocabicak E, Temel Y. Management of Hardware Related Infections after DBS Surgery: A Cost Analysis. Turk Neurosurg. 2018;28(6):929- 933. doi: 10.5137/1019-5149.JTN.21511-17.1. PMID: 29465741. 

5. Bedirli N, Emmez G, Ünal Y, Tönge M, Emmez H. Effects of positive end- expiratory pressure on intracranial pressure during pneumoperitoneum and Trendelenburg position in a porcine mode. Turk J Med Sci. 2017 Nov 13;47(5):1610-1615. doi: 10.3906/sag-1609-17. PMID: 29152942. 

6. Sari R, Tonge M, Bolukbasi FH, Onoz M, Baskan O, Silav G, Elmaci I. Management of Failed Cranioplasty. Turk Neurosurg. 2017;27(2):201-207. doi: 10.5137/1019-5149.JTN.15395-15.0. PMID: 27593759. 

7. Tonge M, Kocabicak E, Ackermans L, Kuijf M, Temel Y. Final Electrode Position in Subthalamic Nucleus Deep Brain Stimulation Surgery: A Comparison of Indirect and Direct Targeting Methods. Turk Neurosurg. 2016;26(6):900-903. doi: 10.5137/1019-5149.JTN.13739-14.1. PMID: 27337232. 

8. Tonge M, Ackermans L, Kocabicak E, van Kranen-Mastenbroek V, Kuijf M, Oosterloo M, Kubben P, Temel Y. A detailed analysis of intracerebral hemorrhages in DBS surgeries. Clin Neurol Neurosurg. 2015 Dec;139:183-7. doi: 10.1016/j.clineuro.2015.10.017. Epub 2015 Oct 23. PMID: 26513430. 

9. Silav G, Bölükbaşı FH, Özek E, Tönge M, Önöz M, Elmacı İ. A Simple Technique for Bone Storage after Decompressive Craniectomy in Children. Pediatr Neurosurg. 2015;50(3):161-4. doi: 10.1159/000381748. Epub 2015 May 14. PMID: 25998533. 

10. Yilmaz MB, Donmez H, Tonge M, Senol S, Tekiner A. Vertebrojugular arteriovenous fistula and pseudoaneurysm formation due to penetrating vertebral artery injury: case report and review of the literature. Turk Neurosurg. 2015;25(1):141-5. doi: 10.5137/1019-5149.JTN.8247-13.1. PMID: 25640560. 

11. Kurt G, Tönge M, Çeltıkçı E, Çapraz I, Serdaroğlu A, Bılır E. Surgery for intractable temporal lobe epilepsy: experience of a single institution. Turk J Med Sci. 2014;44(5):866-70. doi: 10.3906/sag-1307- 30. PMID: 25539559. 

12. Yılmaz MB, Tönge M, Emmez H, Kaymaz F, Kaymaz M. Neuroprotective effects of quetiapine on neuronal apoptosis following experimental transient focal cerebral ischemia in rats. J Korean Neurosurg Soc. 2013 Jul;54(1):1-7. doi: 10.3340/jkns.2013.54.1.1. Epub 2013 Jul 31. PMID: 24044072; PMCID: PMC3772279. 

13. Yilmaz MB, Egemen E, Tonge M, Kaymaz M. Transoral protrusion of a peritoneal catheter due to gastric perforation 10 years after a ventriculoperitoneal shunting: case report and review of the literature. Turk Neurosurg. 2013;23(2):285-8. doi: 10.5137/1019-5149.JTN.4904-11.1. PMID: 23546921. 

14. Omerhodzic I, Tonge M, Matos B, Musabeliu E, Raspanti C, Ferdinandov D, Galimova R, Muroi C, Balik V, Kursumovic A. Neurosurgical training programme in selected European countries: from the young neurosurgeons' point of view. Turk Neurosurg. 2012;22(3):286-93. doi: 10.5137/1019- 5149.JTN.5133-11.0. PMID: 22664994. 

15. Ergun E, Kurt G, Tonge M, Aytar H, Tas M, Baykaner K, Ceviker N. Effects of phenytoin sodium on dura mater healing in a rat model of CSF leakage. Turk Neurosurg. 2011;21(4):471-6. PMID: 22194102. 

16. Emmez H, Tonge M, Tokgoz N, Durdag E, Gonul I, Cevıker N. Radiological and histopathological comparison of microporous polysaccharide hemospheres and oxidized regenerated cellulose in the rabbit brain: a study of efficacy and safety. Turk Neurosurg. 2010 Oct;20(4):485-91. doi: 10.5137/1019- 5149.JTN.3300-10.2. PMID: 20963698. 

17. Emmez H, Yildirim Z, Kale A, Tönge M, Durdağ E, Börcek AO, Uçankuş LN, Doğulu F, Kiliç N, Baykaner MK. Anti-apoptotic and neuroprotective effects of α-lipoic acid on spinal cord ischemiareperfusion injury in rabbits. Acta Neurochir (Wien). 2010 Sep;152(9):1591-600; discussion 1600-1. doi: 10.1007/s00701-010-0703-9. Epub 2010 Jun 10. PMID: 20535507. 

18. Kurt G, Tonge M, Börcek AO, Karahacioglu E, Gurel O, Baykaner K, Ceviker N, Aykol S. Fractionated gamma knife radiosurgery for optic nerve tumors: a technical report. Turk Neurosurg. 2010 Apr;20(2):241-6. doi: 10.5137/1019-5149.JTN.1681-09.3. PMID: 20401852. 

19. Emmez H, Kale A, Tönge M, Cakir A, Ceviker N. Two meningiomas with different histological grades in the same patient. Case report. Neurol Med Chir (Tokyo). 2010;50(8):686-8. doi: 10.2176/nmc.50.686. PMID: 20805656.

Dr. Turker Kilic is a neurosurgeon at Medical Park Göztepe Hospital Complex in Istanbul. He was the first Turkish physician to complete radiosurgery training at Sweden's Karolinska Institute. Dr. Kilic specializes in complex spine surgeries and Gamma Knife radiosurgery. He underwent postdoctoral research fellowships at Harvard Medical School and Brigham and Women’s Hospital.

• Won the Aesculap Research Prize from the European Association of Neurosurgical Societies.
• Received the Young Investigator Award from the AANS/CNS Section on Neurooncology.
• Served as President of the Nervous System Surgery Society.
• Practices at a JCI-accredited facility equipped with a Robotic Surgery Center of Excellence.

Professor Baran Yil is a highly credentialed neurosurgeon who completed a prestigious Cerebrovascular Research Fellowship at the Yale School of Medicine in the USA.

• Performed over 1,100 successful treatments at Valued Med Hub Hospitals
• Awarded First Prize by the Turkish Neurosurgery Society for his work as a young neurosurgeon
• Specialises in neuro-radiology and skull-base procedures
• Holds international memberships with AOSpine and the Turkish Spine Association
• Instructor for advanced skull-base anatomy and deep brain stimulation courses

Professor Ilhan Elmaci is a specialist neurosurgeon who trained at Johns Hopkins University and the University of Zurich – some of the world's most prestigious medical institutions.

• Founding chairman of the Turkish Skull Base Society and executive member of the European equivalent
• Specialises in treating complex brain and spinal tumours in both adults and children
• Uses advanced tools like neuronavigation and intraoperative neuro-ultrasonography for high precision
• Developed and headed several neurosurgery departments across Turkey's leading hospitals
• Published over 110 international scientific papers on neuro-oncology and vascular surgery

General Information and Presentation

He completed his primary education at Şenlikköy Primary School and his secondary education at the Istek Foundation Florya Bilge Kagan High School. He graduated from Istanbul University Cerrahpaşa Faculty of Medicine in 2001. He completed his specialist education in Istanbul Medical Faculty Neurology Department in 2006. In 2006 he worked at the Neurology Clinic and the PharmaZentrum Research Center of the Faculty of Medicine of the University of Basel, Switzerland. Between 2007 and 2011, Bakırköy Prof. Dr. He worked at Mazhar Osman Mental Health and Neurological Diseases Training and Research Hospital in the 3rd Neurology Clinic and in the Dementia and Movement Disorders policlinics. Since October 2011, he has been working at Istanbul University of Science, Faculty of Medicine, Neurology, USA.

Experience

İstanbul Bilim University Faculty of Medicine Neurology, 

Şişli Florence Nightingale Hospital 

Kadıköy Florence Nightingale Hospital Neurology Clinics, 

Gayrettepe Metropolitan Florence Nightingale Hospital PET department.

Dr. Mehmet Osman Akcakaya is a neurosurgeon with 18 years of experience. He specializes in microneurosurgery and functional neurosurgery. He treats head trauma, brain tumors, Parkinson’s disease, and spinal disorders. Dr. Akcakaya uses advanced surgical techniques for these complex conditions.

He has received several awards, including the Second Prize for 'Best Oral Presentation' at the Congress of the Nervous System Surgery Society. He completed a 4-year training program with the European Association of Neurosurgical Societies (EANS). He also holds the EANS board certificate (Part I). Dr. Akcakaya has completed fellowships in Israel and Germany.

He is a member of the Turkish Association of Neurosurgery and EANS. He has also served on scientific committees for international courses on endoscopic spine surgery.

Associate Professor Ramazan Sari is a highly skilled neurosurgeon currently based at Istanbul Florence Nightingale Hospital. He completed an accreditation programme with the European Association of Neurosurgical Societies to maintain high standards in brain surgery.

• Held academic teaching roles at Medipol University and Eurasia University
• Specialises in precise Gamma Knife radiosurgery for brain tumours and vascular malformations
• Helped establish the Department of Neurosurgery at Medipol University
• Member of the European Association of Neurosurgical Societies (EANS)

Professor Kenan Kapici is the former Head of Neurosurgery at Altinbas University, where he trained the next generation of brain surgeons. He brings meticulous precision to Gamma Knife cases at Valued Med Hub Hospitals.

• Completed specialist microsurgery training at GATA Military Medical Faculty
• Master of Health Institutions Management from Beykent University
• Member of the Turkish Neurosurgery Association and Spine Society of Europe
• Former Clinic Chief at Kasimpasa Marine Hospital Neurosurgery Department
• Specialises in neuroanatomy and complex spine surgery techniques

Professor Tahsin Ali Zirh is a neurosurgery specialist who completed advanced research fellowships at The Johns Hopkins Hospital and Toronto Western Hospital.

• Specialises in functional neurosurgery and movement disorders at Medipol Mega University Hospital
• Completed intensive neurophysiology training at Marmara University
• Member of the European Association of Neurosurgical Societies
• Holds clinical experience from top-tier institutions in Canada, the US, and the UK
• Provides expert care for complex neurological cases requiring radiation-based over surgical intervention

The doctor is a highly skilled radiation oncologist with extensive experience in treating a wide range of cancers using advanced radiation therapy techniques. They have a proven track record in improving patient outcomes through personalized treatment plans and cutting-edge technology.

Board certified in radiation oncology, the doctor has contributed to numerous clinical trials and research studies, enhancing the understanding and effectiveness of radiation treatments. They are committed to continuous learning and have attended multiple international conferences to stay abreast of the latest developments in the field.

The doctor is a highly skilled neurosurgeon with extensive experience in the field of brain and nerve surgery. Specializing in complex neurological disorders, the doctor has successfully performed numerous intricate surgeries, contributing significantly to advancements in neurosurgical techniques. The doctor is board-certified and has received multiple accolades for excellence in patient care and innovative research. With a commitment to education, the doctor frequently lectures at international conferences and has published extensively in peer-reviewed journals.

Professor Salih Murat Imer is a highly specialised neurosurgeon who completed advanced training in treatment for vestibular schwannomas and skull base tumours using the Leksell Gamma Knife in France.

• Holds a professorship in neurosurgery and founded the neurosurgery department at Okan University Hospital.
• Trained in functional disorders and radiosurgery at the Timone University Hospital in Marseille.
• Certified by the European Association of Neurosurgical Societies following a five-year specialist training cycle across Europe.
• Contributed to over 60 published peer-reviewed medical articles and nine book chapters on neurosurgical techniques.
• Practices at Istanbul Florence Nightingale Hospital, a facility known for taking on complex neurological cases.

Associate Professor Mustafa Yavuz Samanci is a highly specialised neurosurgeon who completed a dedicated clinical fellowship in Gamma Knife Radiosurgery at the Koç University School of Medicine.

• Completed advanced Gamma Knife training in Miami, USA, focusing on the latest ICON and Esprit systems
• Serves as the Secretary of the Turkish Neuromodulation Society, leading developments in functional neurosurgery
• Active member of the International Parkinson and Movement Disorder Society and the European Association of Neurosurgical Societies
• Holds a PhD in Neuroscience from Maastricht University in the Netherlands, bringing deep research expertise to patient care

Associate Professor Mehmet Tonge is a specialist in stereotactic and functional neurosurgery with extensive academic research in Gamma Knife radiosurgery. He serves at Istanbul Medipol University, one of the region's most prominent medical training institutions.

• Completed a 4-year European Association of Neurosurgical Societies training programme
• Lectured internationally 40+ times on stereotactic techniques and functional neurosurgery
• Broadened expertise through intraoperative MRI training at Zurich University Hospital
• Contributed to over 30 medical publications and 12 textbooks on neurosurgical outcomes
• Serves as a visiting scientist at Maastricht University in the Netherlands

Dr. Merdan Fayda is a radiation oncologist at Liv Hospital in Istanbul. He specializes in high-precision tumor irradiation using 4D-radiotherapy and IMRT. Dr. Fayda studied radiosurgery at the University of North Carolina. He serves patients at a JCI-accredited facility known for its diagnostic precision.

• Expert in radiation diagnostics including MRI, CT, and PET-CT.
• Authored over 35 scientific publications in national and international medical journals.
• Member of the American and European Societies for Radiation Oncology.
• Treats complex cancers of the breast, prostate, lung, and brain.