“…This systematic review involved some limitations. In some studies PET/CT images were interpreted using qualitative criteria [15][16][17]19,20,22,26,29,31,[34][35][36][37][38][39]42,43,47,48,50,[52][53][54], whereas in other studies both qualitative and quantitative criteria were used [18,21,[23][24][25]27,28,30,32,33,40,41,[44][45][46]49,51,55]. As the qualitative evaluation is based on a subject's experience, this might underestimate the PET/CT diagnostic performance.…”