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EJNMMI Physics
Fig. 7 | EJNMMI Physics

Fig. 7

From: From a PMT-based to a SiPM-based PET system: a study to define matched acquisition/reconstruction parameters and NEMA performance of the Biograph Vision 450

Fig. 7

18F-FDG-PET evaluated for two patients sharing the same morphological properties and injected activity (173 MBq): breast cancer imaged on the Biograph mCT (a, b) and follicular lymphoma imaged on the Biograph Vision 450 (c, d, e, f, g, h, i, j). Reconstruction parameters for mCT was OP-OSEM+PSF + TOF, 3 iterations, 21 subsets, and no post-filtering (200 × 200 matrix size) and OP-OSEM+PSF + TOF, 4 iterations, 5 subsets, and no post-filtering for the Biograph Vision 450. The reduction factor as compared with time acquisition used for mCT was 1.89 for the 220 × 220 matrix size (c, d) and 1.34 for the 440 × 440 matrix size (g, h). Data reconstructed using a time per step identical to those of Biograph mCT are presented in (e, f) for the 220 × 220 matrix size and (i, j) for the 440 × 440 matrix size. The IR computed on the right liver lobe was almost identical: 0.176 (a, b); 0.178 (c, d); and 0.183 (g, h). The IR for (e, f) was 0.118 and 0.142 for (i, j). Grey scale is identical for all images

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