. 2018 Jan 9;13:2. doi: 10.1186/s13014-017-0944-3

Table 1.

Proton plans characteristics for the considered patient cases, as extracted from the TPS. The dose per fraction, number of fractions and number of beams are reported. The table also provides information on the angles between beams and the OARs taken into account for the optimization

Patient	Planned dose/fraction [Gy(RBE)]	Number of fractions	Number of beams	Angles between beams [°]	Critical organ at risks
A	1,8	29	2	180	Temporal lobes (left/right)
					Brain stem
					Optical system
B	1,8	30	2	75	Brain stem
					Chiasma
					Optic nerves (left/right)
					Intra-auricular nerve (right)
C	1,8	30	2	32	Brain stem
					Chiasma
					Optic nerve (right)
D	1,8	28	1	\	Optic nerve (left)
D	1,8	28	1	\	Eye (left)