| Turkey | Austria | Spain | |
| Tomotherapy | from $12,000 | from $30,000 | from $35,000 |
| Radiation therapy for brain tumor | from $2,000 | from $15,000 | from $20,000 |
| Proton-beam therapy | from $70,000 | from $80,000 | from $25,061 |
| Gamma Knife for brain tumor | from $4,750 | from $25,000 | from $20,000 |
| Gamma Knife | from $6,300 | from $32,000 | from $18,000 |
Head of Functional Neurosurgery and Radiosurgery at Ruber International Hospital. With over 180 publications, Dr. Martínez Álvarez is a leader in stereotactic radiosurgery for brain tumors.
Head of the Department of Neurosurgery at HM Hospitales Clinic – Dr. Diamantopoulos Fernández leads a specialized team in brain tumor care.
Dr. Luis Madero is the Head of Pediatric Hemato-Oncology at Quironsalud Madrid University Hospital. He specializes in treating complex blood disorders and performing bone marrow transplants. Dr. Madero serves as a Professor of Pediatrics at the Autonomous University of Madrid. He works at Quironsalud Madrid, which Newsweek ranked among the World's Best Hospitals.