Proton versus Photon Radiotherapy for Pediatric Central Nervous System Malignancies: A Systematic Review and Meta-Analysis of Dosimetric Comparison Studies

Figure 3

Dmean of intracranial OARs. (a) Brainstem. (b) Left cochlea. (c) Right cochlea. (d) Left hippocampus. (e) Right hippocampus. (f) Optic chiasm. (g) Normal brain. (h) Pituitary gland. When not otherwise specified, the photon RT technique is IMRT or VMAT. Takizawa, 2017 (1): patients affected by ependymoma (IMRT versus PBT); Takizawa, 2017 (2): patients affected by germinoma (IMRT versus PBT); MacDonald, 2008 (1): proton technique: IMPT; MacDonald, 2008 (2): proton technique: 3D conformal PBT.

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