Whole body images 2 h after i.p. injection (horizontal slices, thickness 7 mm). Free [18F]FDG is taken up by high-glucose using cells such as brain, heart and testis and excreted via kidney and bladder. Liposomal encapsulated [18F]FDG accumulates in the abdomen of the rat. Only released [18F]FDG can be taken up into organs (Picture taken from ).