Figure 3From: Mathematical modeling of positron emission tomography (PET) data to assess radiofluoride transport in living plants following petiolar administration Modeling of observed radioactivity in stem. (A) 1.9 mm thick horizontal cross section of plant shown in Figure 1 at upper stem. (B) Time-activity curves showing observed activity in stem (blue), modeled free activity (green), modeled trapped activity (red), total modeled activity (black). MAT: mean arrival time, UB: upper bound of integral to calculate MAT.Back to article page