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EJNMMI Physics
Fig. 1 | EJNMMI Physics

Fig. 1

From: Cross-calibration of the Siemens mMR: easily acquired accurate PET phantom measurements, long-term stability and reproducibility

Fig. 1

Cross-calibration procedure. To ensure quantitatively accurate measurements of activities at our PET center, we perform a quality control of our devices every 2–3 weeks, testing they are calibrated to measure within our acceptance range. Since this quality control (QC) procedure cross-checks the calibration of all devices compared to a reference device, a Veenstra VDC-404 dose calibrator, it is denoted a cross-calibration [1, 6]. We include all devices in use, which as of 2015 are as follows: one PET/MR, five PET/CT systems (one is exclude in our 3-year comparison as it has only been installed for 2 of the 3 years), one HRRT PET system, three well counters, two blood samplers, two automatic injectors, and four dose calibrators (incl. the reference). Each device measures the original dose, the filled phantom, or samples drawn from the phantom as illustrated above

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