Table 1.

Overview on patients' characteristics and treatment

Patient	Gender	Age	Histology	Localization	Optic pathway glioma	CTV [ccm]	Beam count	Isodose level in scalp [%]	Previous therapy	Total dose (GyE)	Single dose (GyE)	Time interval between inital diagnosis and initiation of proton beam therapy [months]
1	male	10	pilocytic astrocytoma WHO °I	central	no	11	2	10	resection	54	2	45
2	male	38	pilocytic astrocytoma WHO °I	central	no	35	2	30	resection	54	1,8	20
3	female	12	pilomyxoid astrocytoma WHO °II	central	yes	48	2	30	chemotherapy	54	1,8	>116
4	male	37	pilocytic astrocytoma WHO °I	central	no	220	2	30	resection	54	2	44
5	female	17	pilocytic astrocytoma WHO °I	central to peripheral	no	99	2	70	resection	54	1,8	80
6	male	39	astrocytoma WHO °II	central to peripheral	no	266	2	70	chemotherapy	54	1,8	69
7	female	12	fibrillary astrocytoma WHO °II	central to peripheral	no	212	2	90	resection	48,6	1,8	48
8	female	48	astrocytoma WHO °II	central to peripheral	no	75	1	70	biopsy only	54	2	3
9	female	36	fibrillary astrocytoma WHO °II	central to peripheral	no	212	2	70	resection	54	1,8	85
10	female	38	astrocytoma WHO °II	peripheral	no	187	2	70	biopsy only	54	1,8	11
11	female	28	astrocytoma WHO °II	central to peripheral	no	371	2	70	resection	54	1,8	26
12	male	56	astrocytoma WHO °II	central to peripheral	no	463	1	70	biopsy only	50,4	1,8	15
13	female	36	oligoastrozytoma WHO °II	central to peripheral	no	298	2	70	chemotherapy	54	1,8	42
14	male	13	pilocytic astrocytoma WHO °I	central	yes	204	2	30	chemotherapy	54	1,8	132
15	male	16	pilocytic astrocytoma WHO °I	central	no	17	2	30	biopsy only	54	1,8	99
16	male	29	pilocytic astrocytoma WHO °I	central	no	15	2	10	biopsy only	54	2	4
17	male	4	pilocytic astrocytoma WHO °I	central	no	6	2	30	resection	54	1,8	8
18	male	7	pilocytic astrocytoma WHO °I	central	yes	19	2	10	chemotherapy	50,4	1,8	33
19	female	43	astrocytoma WHO °II	central	no	57	2	30	biopsy only	52,2	1,8	4