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EJNMMI Physics
Fig. 2 | EJNMMI Physics

Fig. 2

From: Head-to-head comparison between digital and analog PET of human and phantom images when optimized for maximizing the signal-to-noise ratio from small lesions

Fig. 2

Results from human images with (1) in the upper panel, maximal intensity projections for human PET images reconstructed with the parameters providing the maximal signal-to-noise ratio (SNR) for small elements (4 iterations for noTOF images and 1 and 2 iterations for TOF images for digital and analog PET, respectively); (2) in the lower panels, the comparisons between digital PET (blue lines) and analog PET (red lines) and for images reconstructed with the TOF information (TOF, solid lines) and without the latter (noTOF, dashed lines), of the relationships between SNR and contrast recovery coefficients (CRC) for the adenopathies of 8 to 9 mm in diameter (lower left panel) and of relative noise according to the number of iterations involved in the image reconstruction process (lower right panel). Crosses are defined in the legend of Fig. 1

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