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Imaging score for differentiation of meningioma grade

  • Diagnostic Neuroradiology
  • Published:
Neuroradiology Aims and scope Submit manuscript

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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Correspondence to Abigail Funari.

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Ethics approval

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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The requirement for informed consent was officially waived by the IRB of Albert Einstein College of Medicine due to the purely retrospective nature of the study. Additionally, no identifying patient information or images are published below.

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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

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