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Table 1 Treatment plan for foetal dose evaluation

From: Evaluation of a new foetal shielding device for pregnant brain tumour patients

Energy

Gantry angle (°)

MU

Delivery time (s)

VMAT

 6 MV

2 full arcs

270/265

144

 6 MV FFF

2 full arcs

272/303

141

IMRT

 6 MV

50/100/140/180/220/260/310

79/89/55/63/52/86/82

185

 6 MV FFF

50/100/140/180/220/260/310

123/118/79/91/85/111/121

183

  1. VMAT volumetric modulated arc therapy, IMRT intensity-modulated radiation therapy, FFF flattening filter-free