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Table 2: Mean and standard deviation of the four imaging variables, classified into improvement per symptom
Not Improved Improved
Gait n = 4 n = 19
    Ventricular volume ratio 0.11 (±0.01) 0.11 (±0.03)
    Brain volume ratio 0.76 (±0.02) 0.77 (±0.03)
    Pericerebral CSF volume ratio 0.13 (±0.02) 0.13 (±0.02)
    Ratio between ventricular and pericerebral CSF volume 0.85 (±0.14) 0.85 (±0.28)
Cognition n = 10 n = 9
    Ventricular volume ratio 0.10 (±0.03) 0.11 (±0.02)
    Brain volume ratio 0.77 (±0.03) 0.76 (±0.02)
    Pericerebral CSF volume ratio 0.13 (±0.02) 0.12 (±0.02)
    Ratio between ventricular and pericerebral CSF volume 0.81 (±0.28) 0.96 (±0.22)
Bladder function n = 4 n = 19
    Ventricular volume ratio 0.11 (±0.03) 0.10 (±0.02)
    Brain volume ratio 0.76 (±0.03) 0.78 (±0.02)
    Pericerebral CSF volume ratio 0.13 (±0.02) 0.12 (±0.01)
    Ratio between ventricular and pericerebral CSF volume 0.84 (±0.29) 0.91 (±0.25)
Note:—Ventricular volume, brain volume, and pericerebral CSF volume were converted into ratios from total intracranial volume to normalize for head size.