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Quantitative comparison of PET performance—Siemens Biograph mCT and mMR
- Original research
- Open access
- Published:
EJNMMI Physicsvolume 3, Article number: 5 (2016) Cite this article
Abstract
Background
Integrated clinical whole-body PET/MR systems were introduced in 2010.
In order to bring this technology into clinical usage, it is of great importance to compare the performance with the well-established PET/CT. The aim of this study was to evaluate PET performance, with focus on image quality, on Siemens Biograph mMR (PET/MR) and Siemens Biograph mCT (PET/CT).
Methods
A direct quantitative comparison of the performance characteristics between the mMR and mCT system was performed according to National Electrical Manufacturers Association (NEMA) NU 2-2007 protocol.
Spatial resolution, sensitivity, count rate and image quality were evaluated. The evaluation was supplemented with additional standardized uptake value (SUV) measurements.
Results
The spatial resolution