Table 2 Corrections in 3 and 6 DOF; σ_c: centered standard deviation

longitudinal (mm)

1.2

1.3

0.046

0.0

1.9

0.836

lateral (mm)

-0.3

1.0

0.153

0.5

1.6

0.127

vertical (mm)

0.4

0.8

0.113

1.2

1.2

0.047

iso (°)

0.3

0.6

0.142

-0.1

0.9

0.396

pitch (°)

0.3

0.8

0.148

0.4

1.1

0.119

roll (°)

0.2

0.6

0.175

-0.2

1.2

0.258

overall displacement vector (mm)

2.1

2.55

sigma _c

sigma _c

longitudinal (mm)

0.8

1.3

< 0.001

lateral (mm)

0.6

0.9

< 0.001

vertical (mm)

0.6

0.7

0.062

iso (°)

0.4

0.5

0.019

pitch (°)

0.5

0.7

< 0.001

roll (°)

0.4

0.6

< 0.001

corrections in 3 DOF

Scotchcast head mask

thermoplastic head mask

mean

sigma

p-value

mean

sigma

p-value

longitudinal (mm)

0.4

2.3

0.133

0.6

1.9

0.107

lateral (mm)

-0.4

1.9

0.122

1.1

1.8

0.055

vertical (mm)

-0.4

2.3

0.145

0.00

1.8

1.000

sigma _c

sigma _c

longitudinal (mm)

1.4

1.0

< 0.001

lateral (mm)

1.3

1.0

< 0.001

vertical (mm)

1.2

1.1

0.096

overall displacement vector (mm)

3.5

3.0