Figure 1From: Mathematical modeling of positron emission tomography (PET) data to assess radiofluoride transport in living plants following petiolar administration [ 18 F]fluoride uptake. PET images shown in a 1.2 mm thick transverse scanner plane. Times shown relative to start of petiolar administration. bottom row: photograph of plant and four regions of interest (arrows) delineated on 0 to 60 minute image used for time-activity curves shown in Figure 2 (a = leaf, b = stem - high, c = cotyledon, d = stem - low).Back to article page