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Table 3 Results of subjective PET image quality ratings for different reconstruction algorithms in a subanalysis for patients with high-dose (≥ 2.0 MBq/kg (n = 20 patients of study group)) and low-dose (≤ 2.0 MBq/kg (n = 25 patients of study group)) injection regimen of 18F-FDG. Italicized numbers are the reconstructed datasets yielding the highest score for each assessed parameter

From: Impact of a Bayesian penalized likelihood reconstruction algorithm on image quality in novel digital PET/CT: clinical implications for the assessment of lung tumors

Reconstruction General image quality Image sharpness Lesion conspicuity
High dose Low dose High dose Low dose High dose Low dose
OSEMTOF 3.1 2.9 2.2 2.0 2.3 1.9*
OSEMPSF 3.8 3.9 3.5 3.0* 3.3 3.0
BSREM350 4.0 3.5* 4.5 4.0** 4.2 4.0
BSREM450 4.6 4.1** 4.7 4.3** 4.6 4.2*
BSREM600 4.8 4.7 4.7 4.6 4.6 4.5
BSREM800 4.8 4.8 4.1 4.4 4.3 4.0
BSREM1200 4.2 4.0 4.2 3.4 3.7 3.6
  1. Data are presented as mean
  2. BSREM block sequential regularized expectation maximization, OSEM ordered subset expectation maximization, PSF point spread function modelling, TOF time of flight
  3. * p value < 0.05, ** p value < 0.01