Glioma tumor grading using radiomics on conventional MRI: A comparative study of WHO 2021 and WHO 2016 classification of central nervous tumors
Abstract
Background
Glioma grading transformed in World Health Organization (WHO) 2021 CNS tumor classification, integrating molecular markers. However, the impact of this change on radiomics‐based machine learning (ML) classifiers remains unexplored.
Purpose
To assess the performance of ML in classifying glioma tumor grades based on various WHO criteria.
Study Type
Retrospective.
Subjects
A neuropathologist regraded gliomas of 237 patients into WHO 2016 and 2021 from 2007 criteria.
Field Strength/Sequence
Multicentric 0.5 to 3 Tesla; pre‐ and post‐contrast T1‐weighted, T2‐weighted, and fluid‐attenuated inversion recovery.
Assessment
Radiomic features were selected using random forest‐recursive feature elimination. The synthetic minority over‐sampling technique (SMOTE) was implemented for data augmentation. Stratified 10‐fold cross‐validation with and without SMOTE was used to …