| Turkey | Thailand | South Korea | |
| Gamma Knife | from AUD $5,996 | from AUD $34,863 | from AUD $18,826 |
| Gamma Knife for brain tumor | from AUD $6,624 | from AUD $34,863 | from AUD $18,716 |
| Gamma-knife for spinal tumor | from AUD $9,064 | from AUD $10,459 | - |
Dr. Mehmet Tonge is a stereotactic and functional neurosurgeon at Medipol University PARMER in Istanbul. He specializes in deep brain stimulation and Gamma Knife radiosurgery. Dr. Tonge completed a fellowship in Deep Brain Stimulation at Maastricht University in the Netherlands. He treats movement disorders, chronic pain, and epilepsy.
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.
Professor Turker Kilic was the first Turkish surgeon trained in Gamma Knife at Sweden's Karolinska Institute, bringing world-standard radiosurgery expertise to Istanbul.
Dr. Mehmet Osman Akcakaya is a professor of neurosurgery at Istanbul Florence Nightingale Hospital. He specializes in minimally invasive spine and brain surgery. He completed elite clinical fellowships in Germany and Israel. Dr. Akcakaya holds the European Board of Neurosurgery (EANS) certification.