Radiation Therapy Principles for High-Grade Gliomas

摘要: Gliomas are the most common primary brain tumors,comprising 40-60% of all tumors.The frequent types glioblastoma multiforme, astrocytoma, and oligodendroglioma. Radiation therapy is one important treatment modalities for gliomas, mainly because these tumors usually localized. The patienti¯s head can be immobilized, allowing good targeting tumor. As a result technological advances, range options using radiation has increased. Photon, electron, neutron proton beams in clinical use. accuracy delivery also improved, with development three-dimensional techniques image fusion. Our understanding both radio sensitivity tolerance normal tissue better, design novel fractionation schemes. being combined local systemic chemotherapy, offering