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• W2904175487 abstract "Glioblastoma (GBM) is the most frequent and aggressive type of primary brain tumour. The development of image-based biomarkers from magnetic resonance images (MRIs) has been a topic of recent interest. GBMs on pre-treatment post-contrast T1-weighted (w) MRIs often appear as rim-shaped regions. In this research, we wanted to define rim-shape complexity (RSC) descriptors and study their value as indicators of the tumour’s biological aggressiveness. We constructed a set of widths characterizing the rim-shaped contrast-enhancing areas in T1w MRIs, defined measures of the RSC and computed them for 311 GBM patients. Survival analysis, correlations and sensitivity studies were performed to assess the prognostic value of the measurements. All measures obtained from the histograms were found to depend on the class width to some extent. Several measures (FWHM and β R ) had high prognostic value. Some histogram-independent measures were predictors of survival: maximum rim width, mean rim width and spherically averaged rim width. The later quantity allowed patients to be classified into subgroups with different rates of survival (mean difference 6.28 months, p = 0.006). In conclusion, some of the morphological quantifiers obtained from pre-treatment T1w MRIs provided information on the biological aggressiveness of GBMs. The results can be used to define prognostic measurements of clinical applicability." @default.
• W2904175487 created "2018-12-22" @default.
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• W2904175487 date "2018-12-01" @default.
• W2904175487 modified "2023-10-18" @default.
• W2904175487 title "A three-dimensional computational analysis of magnetic resonance images characterizes the biological aggressiveness in malignant brain tumours" @default.
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• W2904175487 doi "https://doi.org/10.1098/rsif.2018.0503" @default.
• W2904175487 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6303800" @default.
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• W2904175487 hasPublicationYear "2018" @default.
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