The perirenal and retroperitoneal fat appears normal (asterisks). Axial fused PET-CT images obtained through the upper chest and pelvis (Panels C and D, respectively) show lesions with 18 F ...
Special challenges Complex abdominal aortic aneurysms, such as juxtarenal, perirenal or suprarenal as well as penetrating or ruptured aneurysms, represent a particular technical challenge.