Tumor pathology with corresponding WHO grade and ADC values from manual ROI measurement
Tumor Type | WHO Grade | Average Minimum ADC × 10−3 mm2/s | ADC Ratio Thalamus | ADC Ratio White Matter |
---|---|---|---|---|
Desmoplastic infantile ganglioglioma | I | 1.63 | 1.68 | 1.50 |
Desmoplastic infantile ganglioglioma | I | 0.88 | 1.05 | 0.79 |
Desmoplastic infantile ganglioglioma | I | 0.97 | 1.08 | 0.80 |
Desmoplastic infantile ganglioglioma | I | 1.14 | 0.87 | 0.76 |
Choroid plexus papilloma | I | 1.01 | 1.05 | 1.10 |
Choroid plexus papilloma | I | 0.92 | 1.16 | 0.79 |
Choroid plexus papilloma | I | 1.31 | 1.53 | 1.23 |
Pilocytic astrocytoma | I | 0.78 | 0.96 | 0.75 |
Astrocytoma, focal | II | 1.71 | 1.50 | 1.35 |
Pilomyxoid astrocytoma | II | 1.03 | 1.06 | 0.71 |
Astrocytoma, diffuse | II | 1.12 | 1.27 | 0.98 |
Anaplastic ependymoma | III | 0.69 | 0.82 | 0.59 |
Anaplastic ependymoma with tanycytic features | III | 0.54 | 0.57 | 0.47 |
Choroid plexus carcinoma | III | 1.27 | 0.93 | 0.90 |
Atypical teratoid/rhabdoid tumor | IV | 0.67 | 0.53 | 0.41 |
Atypical teratoid/rhabdoid tumor | IV | 0.40 | 0.55 | 0.42 |
Poorly differentiated carcinoma | IV | 0.56 | 0.45 | 0.32 |
Poorly differentiated carcinoma | IV | 0.40 | 0.51 | 0.35 |
Glioblastoma | IV | 0.58 | 0.62 | 0.41 |
P value, t test between low- and high-grade groups | .0018 | <.0001 | .00042 |
Note:—All 3 parameters were significant between the difference of the means of the low-grade and high-grade groups. Of note, the choroid plexus carcinoma in our study is an outlier in the high-grade group.