Abstract
Purpose
We sought to establish a comprehensive imaging score indicating the likelihood of higher WHO grade meningiomas pre-operatively.
Methods
All surgical intracranial meningioma patients at our institution between 2014 and 2018 underwent retrospective chart review. Preoperative MRI sequences were reviewed, and imaging features were included in the score based on statistical and clinical significance. Point values for each significant feature were assigned based on the beta coefficients obtained from multivariate analysis. The imaging score was calculated by adding up the points, for a total score of 0 to 5. The predictive ability of the score to identify higher-grade meningiomas was evaluated.
Results
Ninety patients, 50% of whom had a postoperative diagnosis of WHO grade II meningioma, were included. The mean age for the population was 59.9 years and 70% were female. Tumor volume ≥ 36.0 cc was assigned 2 points, presence of irregular tumor borders was assigned 2 points, and presence of peritumoral edema was assigned 1 point. The probability of having a WHO grade II meningioma was 0% with a score of 0, 25.0% with a score of 1, 38.5% with a score of 2, 65.4% with a score of 3, and 83.3% with a score of 4 or greater. A threshold of ≥ 3 points achieved a recall of 0.80, precision of 0.73, F1-score of 0.77, accuracy of 0.76, and AUC of 0.82.
Conclusion
The proposed imaging scoring system had good predictive capability for WHO grade II meningiomas with good discrimination and calibration. External validation is needed.
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Data Availability
The deidentified data that support the findings of this study are available from the corresponding author, A.F., upon reasonable request.
Abbreviations
- WHO:
-
World Health Organization
- MRI:
-
Magnetic resonance imaging
- FLAIR:
-
Fluid-attenuated inversion recovery
- SWI:
-
Susceptibility weighted imaging
- DWI:
-
Diffusion-weighted imaging
- CT:
-
Computed tomography
- ADC:
-
Apparent diffusion coefficient
- ROI:
-
Region of interest
- CSF:
-
Cerebrospinal fluid
- qADC:
-
Quantitative apparent diffusion coefficient
- NADC:
-
Normalized apparent diffusion coefficient
- AUC:
-
Area under the curve
- PIMS:
-
Preoperative imaging meningioma score
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This research study was conducted retrospectively from data obtained for clinical purposes. We consulted extensively with the IRB of the Albert Einstein College of Medicine, who determined that our study did not need ethical approval. An IRB official waiver of ethical approval was granted from the IRB of the Albert Einstein College of Medicine.
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Funari, A., De la Garza Ramos, R., Cezayirli, P. et al. Imaging score for differentiation of meningioma grade. Neuroradiology 65, 453–462 (2023). https://doi.org/10.1007/s00234-022-03101-w
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DOI: https://doi.org/10.1007/s00234-022-03101-w