Use of Flattening Filter-Free Photon Beams in Treating Medulloblastoma: A Dosimetric Evaluation

Table 1

Dosimetric parameters for combined target volumes (brain and spine).

Combined target volumes (brain and spine)
Dosimetric parameters	3DCRT		6X_SMLC		6X_DMLC		6F_DMLC		6X_RA		6F_RA
	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD
𝐷max	34.31	0.81	32.91	0.67	31.97	0.91	31.87	0.41	32.26	0.61	32.62	0.63
𝐷min	5.76	1.45	20.49	1.82	19.77	2.63	19.35	3.24	21.54	2.61	22.61	1.80
𝐷mean	30.78	0.68	30.09	0.14	30.11	0.11	30.15	0.11	30.77	0.43	30.82	0.80
𝐷2%	32.38	0.68	31.34	0.23	30.75	0.10	30.78	0.18	31.42	0.52	31.68	0.83
𝐷98%	28.51	0.46	28.80	0.00	28.80	0.00	28.80	0.00	28.79	0.02	28.53	0.57
𝑉95%	99.12	0.27	99.62	0.13	99.76	0.09	99.77	0.12	99.83	0.10	99.55	0.62
𝑉107%	46.97	28.60	10.94	4.90	1.23	0.70	2.88	3.74	49.15	30.84	66.36	21.59
DHI	13.45	2.33	8.81	0.80	6.78	0.36	6.89	0.62	9.12	1.78	10.92	1.74
CI	1.19	0.08	1.10	0.03	1.09	0.03	1.10	0.04	1.04	0.02	1.05	0.01