TABLE 2

18F-FET PET Results of Standard Method (Summed Image 20–40 min After Injection; Mean ± SD) and Statistical Differences Between Histopathologic Groups

ParameterSUVmaxSUVmax-to-background ratio
No recurrence (n = 4)2.42 ± 0.542.30 ± 0.23
Histologic type
 Astrocytoma, WHO II (n = 13)2.93 ± 0.732.54 ± 0.54
 Anaplastic astrocytoma, WHO III (n = 9 + 1)*3.24 ± 1.132.59 ± 0.45
 Glioblastoma multiforme, WHO IV (n = 15 + 1)*3.26 ± 0.982.84 ± 0.65
 All astrocytoma, WHO III/IV (n = 24 + 2)*3.26 ± 1.022.75 ± 0.58
 Oligoastrocytoma, WHO II (n = 3)3.70 ± 1.283.07 ± 0.84
 Oligoastrocytoma, WHO III (n = 1)3.002.81
 All WHO II (n = 16)3.07 ± 0.682.64 ± 0.61
 All WHO III/IV (n = 25 + 2)3.25 ± 1.022.75 ± 0.57
P
 No recurrence vs. recurrence0.0280.012
 No recurrence vs. low-grade astrocytomas0.0500.061
 No recurrence vs. low-grade tumors0.0480.050
 Low- vs. high-grade astrocytomas0.1280.137
 All low- vs. high-grade tumors0.2760.277
  • * Added numbers reflect second biopsy in same patient.