Differential Diagnosis between Low-Grade and High-Grade Astrocytoma Using System A Amino Acid Transport PET Imaging with C-11-MeAIB: A Comparison Study with C-11-Methionine PET Imaging

Figure 8

A case of a sixty-eight-year-old female who had received chemoradiotherapy before for GBM in the left temporal lobe (malignant group) (case #18). A clear margined tumor was depicted as a high uptake of MeAIB lesion. MET-PET also demonstrated the lesion; however, the margin of the lesion was unclear due to the physiological uptake of MET in the brain. Recurrent GBM was confirmed after stereotactic biopsy.