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Table 4 Foetal dose reduction at a point 30 cm away from the field edge for different thicknesses of shielding material with parts A + B + C in comparison with no shielding device

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

 

W/O FSD (cGy)

6-mm lead (cGy)

8-mm lead (cGy)

10-mm lead (cGy)

12-mm lead (cGy)

VMAT

 6 MV

2.83

2.02

1.89

1.77

1.75

 6 MV FFF

2.53

1.84

1.73

1.61

1.59

IMRT

 6 MV

2.19

1.57

1.44

1.41

1.36

 6 MV FFF

2.16

1.62

1.54

1.42

1.40

  1. VMAT volumetric modulated arc therapy, IMRT intensity-modulated radiation therapy, FFF flattening filter-free, FSD foetal shielding device, W/O without
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Radiation Oncology

ISSN: 1748-717X

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