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Table 2 Values for the minimum, maximum, median, and standard deviation (SD) across the population (N = 18) for beam range (cm), energy (MeV) and width of the modulated range or spread out Bragg peak (SOBP) (cm)

From: Standardized treatment planning methodology for passively scattered proton craniospinal irradiation

  

Cranial fields

Spinal fields

   

Upper

Middle

Lower

Range (cm)

Min - Max

14.7-20.60

8.5-15.4

6.6-13.6

7.6-16

 

Median

17.0

10.9

12.3

11.1

 

SD

1.3

1.9

2.7

2.2

Energy (MeV)

Min - Max

180-225

140-200

140-200

140-200

 

Median

200

160

180

160

 

SD

12

17

18

17

SOBP (cm)

Min - Max

15-16

4-7

4-8

4-7

 

Median

16

5

5

6

 

SD

1

1

2

1

  1. Energy values correspond to set energy steps of 140 MeV, 160 MeV, 180 MeV, 200 MeV, and 225 MeV. Abbreviation in this table: spread out Bragg peak (SOBP).