It is essential to be aware of widely accepted criteria for grading of treatment response in both high-grade and low-grade gliomas. These criteria primarily take into account responses of measurable and nonmeasurable lesions on T2-weighted, fluid-attenuated inversion recovery, and postcontrast images to determine a final category of response for the patient. The additional role that other advanced imaging techniques, such as diffusion and perfusion imaging, can play in the surveillance of these tumors is discussed in this article.
Keywords: 11C-Met-PET; Advanced imaging; Diffusion imaging; FDG-PET; Glioma surveillance; MR spectroscopy; Perfusion imaging; RANO.
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