Fig. 9
From: Single-quantum sodium MRI at 3 T for separation of mono- and bi-T2 sodium signals

Estimates of upper limit of the volume fraction for extra- and intracellular spaces. (A) Typical sodium images (total, mono-T2, and bi-T2) and ROIs for the gray matter (GM) and white matter (WM) in an axial slice from a healthy subject. (B) Volume fractions for the healthy group (N = 9), and (C) for the patient group (N = 6).