Figure 1. 18F-FDG PET/CT and gallium-68 DOTATATE scans showing matched target lesions in liver and bone metastases. It is important to note that the lack of DOTATATE avidity in a circumscribed region of the liver is due to SBRT radiation-induced tumor necrosis.

A) 18F-FDG PET/CT vertebral body lesion (green arrow)

B) 68Ga-DOTATOC SSTR PET/CT vertebral body lesion (green arrow)

C) 18F-FDG PET/CT liver lesion prior to SBRT treatment (blue arrow)

D) 68Ga-DOTATOC SSTR PET/CT liver lesion after SBRT treatment (blue arrow)

18F-FDG PET/CT: [18F] fluorodeoxyglucose  positron emission tomography/computed tomography 

SBRT: Stereotactic body radiation therapy

SSTR: somatostatin receptor