| Istanbul | Thailand | South Korea | |
| Gamma Knife | from AUD $7,500 | ≈ AUD $35,600 | from AUD $14,200 |
| Gamma-knife for spinal tumor | ≈ AUD $9,300 | ≈ AUD $14,200 | ≈ AUD $13,500 |
| Gamma Knife for brain tumor | from AUD $7,100 | ≈ AUD $12,800 | from AUD $17,100 |
Dr. Ahmet Hilmi Kaya is a professor of neurosurgery at Anadolu Medical Center in Istanbul. He specializes in functional neurosurgery and deep brain stimulation (DBS) for movement disorders. Dr. Kaya previously led a Parkinson’s disease research project at Ondokuz Mayıs University. He earned the Aysima Altınok Thesis Award from the Turkish Neurosurgical Society.
Dr Mustafa Sakar is a specialised neurosurgeon at Memorial Göztepe Hospital who trained at the University of Tübingen in Germany for complex tumour surgery.
Professor Mehmet Tonge is a leading stereotactic specialist who has contributed to 12 textbooks on neuromodulation and brain mapping. He leads complex functional neurosurgery cases at Medipol University Parkinson’s and Movement Disorders Centre.
Professor Baran Yılmaz is a Yale-trained neurosurgeon who specialises in Gamma Knife radiosurgery for brain tumours and vascular disorders.