Positron emission tomography following 18F-FDG uptake. An infiltrative, hyper-metabolic nodule dependent on the right adrenal gland can be seen in the image. It measured 24 x 19 mm and exhibited a soft tissue density and an SUVmax of 6. 8. SUVmax: maximum standardized uptake value; 18F-FDG: 2-deoxy-2-fluoro(fluorine-18)-D-glucose. 