Figure 5
From: Radiomics Features Differentiate Between Normal and Tumoral High-Fdg Uptake

Various tissue uptake of heart (a–c) and kidney (d–f) in FDG-PET. (a–c) In three different scans, the heart exhibits left ventricular and left atrial uptake (a), left ventricular uptake (b) and no detectable uptake (c). Segmentation results overlaid on the scans demonstrates the effect of partial tissue uptake. (d–f) Similar behavior can also be observed in the kidneys, as exhibited by activity in the cortex and collecting system (d), activity in the collecting system (e) and absence of activity in (f).