FIGURE 3. Patient 4 (slowly progressive oligoastrocytoma, World Health Organization stage II). Nonenhancing T1-MR (A) but T2-MR hyperintense (B) tumor is not manifest in ⁷⁶Br-bromide PET. ⁷⁶Br-Bromide PET raw-count images from 60 to 90 min (C) and 24 to 24.5 h (D) after injection. (E) Corresponding parametric DV_Logan image (pixel-wise Logan plot using dynamic PET data 0–110 min after injection and tracer concentration in arterial plasma as input function).