In Vivo Rat PET with 18F-7-OH-FHXPAT. Normal male Sprague-Dawley rats injected intravenously with 7 MBq of 18F-7-OH-FHXPAT. Summed PET images were coregistered with rat MRI template. (a–c) MR sections, coronal (a), saggital (b), and horizontal (c) showing DStr, VSt (cross hairs), and cerebellum (CB). (d–f) PET image slices corresponding to MR slices; coronal (d), sagittal (e), and horizontal (f) showing binding of 18F-7-OH-FHXPAT in DSt and VSt. (g–i) Corresponding coregistered PET-MR images showing binding of 18F-7-OH-FHXPAT in DSt and VSt and little in CB