NEMA NU 2:2018

The philosophy and rationale of the standards measurements and illustrative examples of the analysis and results are presented in Journal of Nuclear Medicine, vol. 43, no. 10, 2002. Daube-Witherspoon ME, Karp JS, Casey ME, DiFilippo FP, Hines H, Muehllehner G, Simcic V, Stearns CW, Adam L-E, Kohlmyer S and Sossi V. 'PET Performance Measurements Using the NEMA NU 2-2001 Standard.' pp. 1398-1409. With the exceptions of Section 8 for time-of-flight systems and Section 9 for hybrid PET/CT systems, the Task Force has attempted to specify methods that can be performed on all positron emission tomographs. These include single and multiple slice, discrete and continuous detector, time-of-flight instruments, multi-planar and volume reconstruction models, and dedicated positron emission tomographs as well as other coincidence-capable imaging systems. Wherever possible, future developments that could be readily anticipated were taken into account. While many PET tomographs are constructed as hybrid imaging systems such as PET/CT and PET/MR systems, the standards committee has not specified special methods to assess hybrid imaging performance with the exception of the PET/CT registration test described in Section 9. It is expected that the PET component of a hybrid imaging system can be assessed using the methods described in this standard, and other portions of the system can be assessed using other standards appropriate to that technology. The method for assessing the co-registration accuracy of hybrid PET/CT systems has the potential to be adapted to PET/MR systems. In the event a portion of any of the PET test methods described here cannot be executed in a hybrid imaging system, workaround methods may be used, but those methods must be described in the test report.