samples/ROI-Masks_description.txt

This collection contains 406 Region Of Interest (ROI) masks in MATLAB
format defining the low grade glioma (LGG) tumor region on T1-weighted
(T1W), T2-weighted (T2W), T1-weighted post-contrast (T1CE) and
T2-flair (T2F) MR images of 108 different patients from the TCGA-LGG
collection. 81 of the patients have ROI masks drawn for the four MRI
sequences (T1W, T2W, T1CE and T2F), and 27 patients have ROI masks
drawn for three or less of the four MRI sequences. The ROI masks were
used to extract texture features in order to develop radiomic-based
multivariable models for the prediction of isocitrate dehydrogenase 1
(IDH1) mutation, 1p/19q codeletion status, histological grade and
tumor progression. Clinical data (188 patients in total from the
TCGA-LGG collection, some incomplete depending on the clinical
attribute), VASARI scores (188 patients in total from the TCGA-LGG
collection, 178 complete) with feature keys, and source code used in
this study are also available with this collection.