Table 1

T/N ratios of methionine SUV, IDH1 gene status, and contrast enhancement by tumour type and grade

WHO gradeHistological typenIDH1 mutation, %CE on MRI, %MinimumMaximumMean ±SD
Grade 1Pilocytic astrocytoma5NA1001.453.42.31±0.67
Grade 2Diffuse astrocytoma1891170.61.71.06±0.32
OT with 1p/19q co-deletion26100191.42.91.94±0.58
OT without 1p/19q co-deletion11100361.44.52.67±0.43
Grade 3Anaplastic astrocytoma1780760.83.72.38±0.86
Anaplastic OT with 1p/19q co-deletion1887562.25.33.49±0.84
Anaplastic OT without 1p/19q co-deletion11401002.49.34.83±1.37
Grade 4Glioblastoma33171001.77.94.25±1.59
  • NA, not available; OT, oligodendroglial tumours; SUV, standard uptake value; T/N, tumour-to-normal tissue.