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. 2018 Aug;39(8):1460–1467. doi: 10.3174/ajnr.A5702

Table 1:

Quantitative measurements in the SNa

Side PD HV
3T NM ROI
    Volume
        L 184.41 ± 68.84 261.45 ± 47.68b
        R 176.91 ± 62.89 258.89 ± 46.62b
        Mean LR 180.66 ± 63.63 260.17 ± 42.87b
    Signal
        L 106.74 ± 2.64 110.21 ± 2.55b
        R 106.61 ± 3.32 110.46 ± 2.82b
        Mean LR 110.56 ± 2.62 110.33 ± 2.40b
    FA
        L 0.32 ± 0.04 0.34 ± 0.04c
        R 0.31 ± 0.04 0.33 ± 0.04
        Mean LR 0.31 ± 0.03 0.33 ± 0.04c
    AD
        L 0.68 ± 0.09 0.59 ± 0.10d
        R 0.70 ± 0.08 0.62 ± 0.10c
        Mean LR 0.69 ± 0.08 0.60 ± 0.10c
    RD
        L 0.44 ± 0.06 0.38 ± 0.07d
        R 0.46 ± 0.06 0.40 ± 0.07c
        Mean LR 0.45 ± 0.06 0.39 ± 0.07c
    MD
        L 0.52 ± 0.07 0.45 ± 0.08d
        R 0.54 ± 0.06 0.48 ± 0.08c
        Mean LR 0.53 ± 0.11 0.46 ± 0.08c
    R2*
        L 35.91 ± 4.95 36.66 ± 2.84
        R 36.10 ± 6.64 36.54 ± 2.80
        Mean LR 35.65 ± 6.46 36.60 ± 2.64
3T T2 ROI
    FA
        L 0.39 ± 0.06 0.42 ± 0.06
        R 0.37 ± 0.06 0.40 ± 0.05
        Mean LR 0.38 ± 0.06 0.40 ± 0.05
    AD
        L 0.50 ± 0.09 0.45 ± 0.10
        R 0.53 ± 0.10 0.49 ± 0.11
        Mean LR 0.52 ± 0.09 0.47 ± 0.10
    RD
        L 0.30 ± 0.06 0.26 ± 0.10c
        R 0.33 ± 0.06 0.29 ± 0.06c
        Mean LR 0.32 ± 0.06 0.28 ± 0.0c
    MD
        L 0.37 ± 0.07 0.32 ± 0.07c
        R 0.40 ± 0.07 0.35 ± 0.08c
        Mean LR 0.38 ± 0.07 0.34 ± 0.08c
    R2*
        L 28.47 ± 4.17 30.21 ± 3.23
        R 28.91 ± 3.98 29.93 ± 2.87
        Mean LR 28.69 ± 3.97 30.07 ± 2.88
7T T2*WI ROI
    T2WI volume
        L 459.75 ± 120.74 541.14 ± 118.80c
        R 468.11 ± 130.00 523.01 ± 121.85c
        Mean LR 463.93 ± 122.83 532.07 ± 118.33c

Note:—L indicates left; R, right; LR, average of left and right.

a

Quantitative measurements in the substantia nigra (mean and SD) are presented.

b

Significant differences between patients with PD and HVs are indicated using P < .001.

c

Significant differences between patients with PD and HVs are indicated using P < .05.

d

Significant differences between patients with PD and HVs are indicated using P < .005.