Table 2 Significant (P < 0.008) main effects (F). Results of ANOVAs applied to a) data from whole GM, WM masks and b) sub-regions. Numbers in brackets indicate degree of freedom. Non-significant main effects indicated by a dash (—). EcF; extracellular fraction; TSC, total sodium concentration.

From: Distribution of brain sodium long and short relaxation times and concentrations: a multi-echo ultra-high field 23Na MRI study

 

F-Values

 

Dependant variable

Whole Model (3)

Tissue Type (1)

Sex (1)

Age (1)

a)

T2*short

5.75

14.39

—

—

T2*long

26.07

72.95

—

—

NaSF

—

—

—

—

NaLF

36.7

109.63

—

—

TSC

29.25

85.33

—

—

EcF

36.7

109.31

—

—

 

Dependant variable

Whole Model (9)

Region (7)

Sex (1)

Age (1)

b)

T2*short

12.44

15.97

—

—

T2*long

7.23

9

—

—

NaSF

24.41

30.02

—

—

NaLF

9.5

12.13

—

—

TSC

37.36

46.64

8.03

—

EcF

9.5

12.13

—

—

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