Normal Distribution

Following intravenous injection, activity is seen in the brain and the heart; cardiac activity can be decreased by fasting. Excretion is by the renal route; kidneys are faintly visualized and the bladder may be a confounding element in pelvic imaging.

The liver is also faintly seen throughout the period of the study. Muscle activity, including talking around the time of injection, will result in accumulation within the corresponding muscle group. Figure 1 shows the normal biodistribution of FDG.

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