Fig. 4

[18F]FDG images, MR images, and Z-score maps derived from a 71-year-old male. [18F]FDG images acquired using PMT-PET (a) and SiPM-PET (b). MR image of slices of both [18F]FDG images (c). Z-score maps calculated from PMT-PET (d) and SiPM-PET (e) images. MR magnetic resonance, PET positron emission tomography, PMT photomultiplier tube, SiPM silicon photomultiplier