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Table 12 Mean measurements of trajectory to brainstem (mm)

From: The foramen ovale: a keyhole to the brain? Computer simulations of percutaneous FO punctures

 

BRAINSTEM

Access

Hartel

Side

LEFT

RIGHT

Number

10

10

FO

Anterior

Anterior

TL

108.2 (± 7.9)

107.9 (± 8.9)

ICL

31.6 (± 2.8)

30.9 (± 3.1)

ALPHA

40.8° (± 7.6°)

42.5° (± 5.9°)

BETA

34.0° (± 7.3°)

31.4° (± 8.4°)

Maxilla

13.0 (± 3.0)

11.1° (± 2.0)

Mandibula

0.8 (± 0.3)

2.0 (± 1.5)

Pterygoid

9.1 (± 2.1)

7.4 (± 1.8)

Pars petrosus

7.5° (± 4.9)

7.6° (± 3.5)

A. maxilaris

8.4 (± 3.6)

10.2 (± 8.2)

A. carotis

4.7 (± 2.0)

6.0 (± 2.0)

  1. FO = position of trajectory in foramen ovale, TL = total length of trajectory, ICL = intra cranial length, ALPHA = height angle, BETA = horizontal angle