Figure 1: (a) The coronal and (b) transaxial images of contrast computed tomography abdomen (left) and Gallium-68 DOTA-exendin-4 positron emission tomography-computed tomography scan images (right) of patient 1 obtained 90 min after the injection of 74 MBq of Gallium-68-DOTA-exendin-4 demonstrating focal (arrow) uptake in the head of pancreas