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Table 1 Comparison of the calculated to the measured doses in 2, 3 and 4 cm depth of a RW3 slab phantom. All experiments were performed with a Trilogy linear accelerator irradiating a 6 MV, 15 × 15 cm2 field with 200 MU. The doses were measured on 71 points directly below the TTField arrays with a MapCheck2 2D diode detector array. The arithmetic average as well as the standard deviation of the doses at these 71 measure points are presented

From: Dosimetric impact of tumor treating field (TTField) transducer arrays onto treatment plans for glioblastomas – a planning study

 

depth

Without TTField arrays

With TTField arrays

Attenuation

Average (cGy)

StdDev

Average (cGy)

StdDev

kV

2 cm

214.3

1.10

199.1

4.90

7.09%

3 cm

204.6

0.80

187.9

4.90

8.16%

4 cm

194.3

0.60

177.6

4.70

8.59%

MV

2 cm

214.4

0.80

211.9

1.20

1.17%

3 cm

204.6

0.60

199.5

1.20

2.49%

4 cm

194.8

0.50

189.9

1.20

2.52%

Phantom

2 cm

214.6

1.60

207.4

4.00

3.36%

3 cm

204.9

1.30

197.3

3.40

3.71%

4 cm

195.0

1.10

189.8

4.20

2.67%