Central profile on a transverse slice of phantoms.

<p>Data are normalized to the maximum value intensity of the profile. No abnormality was seen.</p

Mean activity concentration estimated from 15 cm diameter circular Regions of Interest (ROIs) on 15 consecutive slices and accuracy.

<p>Data acquired on the 4 PET systems used in 2D mode. Activity concentration in images and in phantom expressed in kBq/mL. Standard deviation (SD), accuracy and maximum deviation are in %.</p

Mean activity concentration estimated from 15 cm diameter circular Regions of Interest (ROIs) on 15 consecutive slices and accuracy.

<p>Data acquired on the 8 PET systems used in 3D mode. Activity concentration in images and in phantom expressed in kBq/mL. Standard deviation (SD), accuracy and maximum deviation are in %.</p

Observed artefacts on images acquired on uniform phantom.

<p>Display scale is [0; 100%]. A: no artefacts (site 9), B: LOR-RAMLA concentric ring artefacts (site 6), C: FBP concentric ring artefacts (site 4).</p

Dose calibrator reproducibility and accuracy results.

<p>Repeated measurements of certified standard source (⁶⁸Ge) on the dose calibrators of 11 sites. Standard source activity was calculated by applying decay calculation between the calibration date and the measurements date. Measurements expressed in MBq. Standard deviation (SD) and accuracy are in %.</p