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. 2013 Sep 13;35(6):2698–2713. doi: 10.1002/hbm.22360

Table 2.

The fitted model parameters of susceptibility and R2* in gray matter

χ = α[1 − exp(−β× age)] + γ R2* = α[1 − exp(−β× age)]+ γ
α (ppm) β (year−1) γ (ppm) α (s−1) β (year−1) γ (s−1)
SC Male 0.04 ± 0.27 0.01 ± 0.04 0.00 ± 0.01 23 ± 12 0.10 ± 0.05 6 ± 12
Female 0.02 ± 0.06 0.01 ± 0.05 0.00 ± 0.01 18 ± 17 0.10 ± 0.09 10 ± 17
Both 0.03 ± 0.12 0.01 ± 0.04 0.00 ± 0.00
Both (>7 y/o) 0.05 ± 0.59 0.00 ± 0.05 0.00 ± 0.01 18 ± 7 0.08 ± 0.04 11 ± 7
MC Male 0.05 ± 0.05 0.01 ± 0.02 0.00 ± 0.00 22 ± 6 0.06 ± 0.03 11 ± 7
Female 0.04 ± 0.01 0.05 ± 0.03 −0.01 ± 0.01 28 ± 9 0.07 ± 0.03 5 ± 9
Both 0.04 ± 0.00 0.03 ± 0.02 0.00 ± 0.01
Both (>7 y/o) 0.03 ± 0.01 0.02 ± 0.02 0.00 ± 0.01 24 ± 5 0.06 ± 0.02 9 ± 5
PU Male 0.16 ± 0.14 0.01 ± 0.02 0.00 ± 0.02 26 ± 6 0.03 ± 0.03 10 ± 8
Female 0.22 ± 0.24 0.01 ± 0.01 −0.01 ± 0.02 47 ± 64 0.01 ± 0.02 14 ± 5
Both 0.20 ± 0.14 0.01 ± 0.01 −0.01 ± 0.01
Both (>7 y/o) 0.17 ± 0.09 0.01 ± 0.01 −0.01 ± 0.02 49 ± 74 0.02 ± 0.02 12 ± 4
GP Male 0.14 ± 0.04 0.12 ± 0.05 −0.01 ± 0.04 28 ± 12 0.06 ± 0.04 14 ± 13
Female 0.12 ± 0.04 0.10 ± 0.04 0.00 ± 0.04 33 ± 26 0.08 ± 0.06 8 ± 27
Both 0.13 ± 0.03 0.11 ± 0.03 0.00 ± 0.03
Both (>7 y/o) 0.09 ± 0.04 0.07 ± 0.04 0.04 ± 0.05 30 ± 12 0.07 ± 0.04 11 ± 13
CN Male 0.06 ± 0.02 0.07 ± 0.04 0.00 ± 0.02 17 ± 4 0.04 ± 0.03 10 ± 6
Female 0.06 ± 0.02 0.04 ± 0.03 0.01 ± 0.02 23 ± 21 0.01 ± 0.02 13 ± 5
Both 0.06 ± 0.01 0.05 ± 0.02 0.01 ± 0.01
Both (>7 y/o) 0.06 ± 0.02 0.05 ± 0.03 0.00 ± 0.02 18 ± 3 0.02 ± 0.02 12 ± 4
RN Male 0.13 ± 0.04 0.06 ± 0.03 −0.03 ± 0.04 28 ± 11 0.06 ± 0.04 9 ± 13
Female 0.11 ± 0.04 0.06 ± 0.04 −0.02 ± 0.05 27 ± 18 0.07 ± 0.05 8 ± 19
Both 0.12 ± 0.03 0.06 ± 0.03 −0.03 ± 0.03
Both (>7 y/o) 0.06 ± 0.02 0.05 ± 0.03 0.00 ± 0.02 28 ± 10 0.06 ± 0.03 8 ± 11
SN Male 0.13 ± 0.04 0.08 ± 0.04 −0.02 ± 0.05 39 ± 36 0.10 ± 0.09 1 ± 36
Female 0.12 ± 0.05 0.08 ± 0.04 −0.02 ± 0.05 32 ± 18 0.07 ± 0.05 8 ± 19
Both 0.12 ± 0.03 0.08 ± 0.03 −0.02 ± 0.03
Both (>7 y/o) 0.17 ± 0.10 0.10 ± 0.06 −0.07 ± 0.10 34 ± 17 0.08 ± 0.04 5 ± 17
DN Male 0.12 ± 0.04 0.05 ± 0.04 −0.02 ± 0.04 26 ± 22 0.07 ± 0.08 10 ± 24
Female 0.13 ± 0.04 0.02 ± 0.03 0.00 ± 0.04 30 ± 14 0.04 ± 0.04 11 ± 17
Both 0.12 ± 0.02 0.04 ± 0.02 −0.01 ± 0.03
Both (>7 y/o) 0.14 ± 0.04 0.04 ± 0.03 −0.03 ± 0.05 28 ± 11 0.05 ± 0.04 12 ± 13