The NEMA NU 2-2012 parameters measured for the 4-ring DMI system (AFOV = 20 cm) were compared with results obtained at Stanford and Uppsala Universities [2 (link)] and Tokyo [3 (link)] for the same system and with results from Brugge [4 (link)] obtained for the system in its 3-ring configuration (AFOV = 15 cm). For the DMI-DR system, results were compared with those obtained at Southampton-Poole-Plymouth [5 (link)].
In a second step, a comparison was made between results obtained in our study and those published for other commercially available systems from Siemens Healthcare, Erlangen, Germany (Biograph mCT Flow [17 (link), 18 ], Biograph mMR PET/MR [18 , 19 (link)] and digital Biograph Vision [20 (link)]), Philips Medical Systems, Eindhoven, The Netherlands (Ingenuity TF [21 (link)] and Vereos [22 , 23 ]) and GE Healthcare, Milwaukee, WI, USA (Discovery IQ [24 (link), 25 ] and SiPM-based Signa PET/MR [26 (link)]).
In a second step, a comparison was made between results obtained in our study and those published for other commercially available systems from Siemens Healthcare, Erlangen, Germany (Biograph mCT Flow [17 (link), 18 ], Biograph mMR PET/MR [18 , 19 (link)] and digital Biograph Vision [20 (link)]), Philips Medical Systems, Eindhoven, The Netherlands (Ingenuity TF [21 (link)] and Vereos [22 , 23 ]) and GE Healthcare, Milwaukee, WI, USA (Discovery IQ [24 (link), 25 ] and SiPM-based Signa PET/MR [26 (link)]).
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