Brain Tumours

Chordoma Chondrosarcoma

Skull Base Chordoma and Chondrosarcoma

OAR Constraints:

Optic chiasm and nerves:

max 60 Gy(RBE)

Brainstem surface: Brainstem center:

max 64 Gy(RBE)

max 54 Gy(RBE)

Cochlea:

max 36 Gy(RBE), mean 30 Gy(RBE)

Temporal Lobe (outside PTV): ≤ 20 Gy(RBE) Spinal cord surface:

max 60 Gy(RBE)(generally ≤54

Gy(RBE) Spinal cord center:

≤50.4 Gy(RBE) = <7.3 Gy(RBE )

Hippocampus:

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03/01/13