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Table 2 Relative coordinates between key points and TMN

From: Mastoid notch as a landmark for localization of the transverse-sigmoid sinus junction

 

ASTS&TMN_x

ASTS&TMN_y

IMTS&TMN_x

IMTS&TMN_y

median, mm

 ML

−2.84

26.23

2.56

14.32

 MR

−3.16

27.47

4.44

14.48

 FL

0.19

27.66

8.38

18.69

 FR

−1.40

27.15

7.57

19.74

overall

−1.92

27.01

5.46

15.95

  1. M male, F female, L left side, R right side. For the x relative coordinates, sign "- "means the key point was located on the frontal side of the TMN; For the y relative coordinates, −"means the key point was located on the inferior side of the TMN