Article Figures & Data
Figures
- Fig 1.
Grade II oligodendroglioma. A, Axial T2-weighted fast SE image shows a high-signal-intensity mass in left frontal lobe. B, Axial contrast-enhanced T1-weighted image shows no postcontrast enhancement within the left frontal lobe mass. C, Axial automated postprocessed ADC map yields a minimal ADC value of 946 × 10−6 mm2/s, above the 925 × 10−6 mm2/s threshold.
- Fig 2.
Grade III oligodendroglioma. A, Axial T2-weighted fast SE image shows a high-signal-intensity mass in left medial frontal and parietal lobes. B, Axial contrast-enhanced T1-weighted image shows minimal nodular post–contrast enhancement within the medial margin of the mass. C, Axial automated postprocessed ADC map shows low signal intensity along the posterior margin. D, As stated in “Materials and Methods,” 4 ROIs are placed in the areas visually assessed as the lowest in signal intensity on the ADC map. In this case, of the 4 ROIs, the lowest ADC value is 762 × 10−6 mm2/s, which was recorded for this grade III oligodendroglioma, below the 925 × 10−6 mm2/s threshold.
Tables
Score Degree of Enhancement No. of Cases 1 No enhancement 45 2 Minimal enhancement 17 3 Moderate enhancement 8 4 Severe enhancement 5 Tumor Grade Enhancing Nonenhancing III 21 8 II 9 37 Total 30 45 Predict Grade III If and Only If Specificity Sensitivity Negative Predictive Value Positive Predictive Value Accuracy Specificity + Sensitivity A 89.1% 62.1% 78.9% 78.3% 78.7% 151.2% E 80.4% 72.4% 82.2% 70.0% 77.3% 152.9% C 75.0% 52.4% 64.3% 64.7% 64.4% 127.4% A + E 95.7% 41.4% 72.1% 85.7% 74.7% 137.0% A + C 91.7% 38.1% 62.9% 80.0% 66.7% 129.8% E + C 87.5% 52.4% 67.7% 78.6% 71.1% 139.9% A or E 73.9% 93.1% 94.4% 69.2% 81.3% 167.0% A or C 75.0% 81.0% 81.8% 73.9% 77.8% 156.0% E or C 66.7% 76.2% 76.2% 66.7% 71.1% 142.9% A + E + C 95.8% 38.1% 63.9% 88.9% 68.9% 133.9% A or E or C 66.7% 95.2% 94.1% 71.4% 80.0% 161.9% A or (E + C) 83.3% 81.0% 83.3% 81.0% 82.2% 164.3% E or (A + C) 75.0% 76.2% 78.3% 72.7% 75.6% 151.2% C or (A + E) 75.0% 61.9% 69.2% 68.4% 68.9% 136.9% A + (E or C) 91.7% 47.6% 66.7% 83.3% 71.1% 139.3% E + (A or C) 87.5% 61.9% 72.4% 81.3% 75.6% 149.4% C + (A or E) 83.3% 52.4% 66.7% 73.3% 68.9% 135.7% ↵a Based on the dichotomizations of ADC (A), enhancement (E), and calcification (C).
In this issue
Jump to section
Related Articles
Cited By...
- Integrated single cell spatial multi-omics landscape of WHO grades 2-4 diffuse gliomas identifies locoregional metabolomic regulators of glioma growth
- Comparison of the Effect of Vessel Size Imaging and Cerebral Blood Volume Derived from Perfusion MR Imaging on Glioma Grading
- Can Diffusion Tensor Imaging Noninvasively Detect IDH1 Gene Mutations in Astrogliomas? A Retrospective Study of 112 Cases