Fig. 9From: Continuous monitoring of plant sodium transport dynamics using clinical PETHigh contrast PET projection images with Regions of Interest overlaid (red boxes) for a Experiment 1, and b Experiment 2. Projections are given by the summation of all voxel intensities in the through-plane direction. The ROIs are 3D rectangular prisms, with identical spatial extent in the through-plane direction. c Axial PET image overlaid on CT imageBack to article page