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Table 7 The measured foetal doses with and without the foetal shielding device using all parts in a pregnant patient plan at the three point represented by fundus, umbilicus and symphysis pubis

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

 

Fundus

Umblicus

Symphysis pubis

W/O FSD at 30 cm (cGy)

With FSD at 30 cm (cGy)

W/O FSD at 40 cm (cGy)

With FSD at 40 cm (cGy)

W/O FSD 50 cm (cGy)

With FSD at 50 cm (cGy)

VMAT

 6 MV

8.882

4.764

3.876

1.938

2.019

0.969

 6 MV FFF

7.267

4.037

3.149

1.534

1.534

0.727

IMRT

 6 MV

7.267

4.118

4.279

2.019

3.795

2.019

 6 MV FFF

6.217

3.876

3.472

1.696

2.826

1.534

  1. VMAT volumetric modulated arc therapy, IMRT intensity-modulated radiation therapy, FFF flattening filter-free, FSD foetal shielding device, FD foetal dose