Brain tumor classification from multi-modality MRI using wavelets and machine learning |
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Authors: | Khalid Usman Kashif Rajpoot |
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Affiliation: | 1.School of Electrical Engineering and Computer Science,National University of Sciences and Technology (NUST),Islamabad,Pakistan;2.School of Computer Science,University of Birmingham,Birmingham,United Kingdom |
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Abstract: | In this paper, we propose a brain tumor segmentation and classification method for multi-modality magnetic resonance imaging scans. The data from multi-modal brain tumor segmentation challenge (MICCAI BraTS 2013) are utilized which are co-registered and skull-stripped, and the histogram matching is performed with a reference volume of high contrast. From the preprocessed images, the following features are then extracted: intensity, intensity differences, local neighborhood and wavelet texture. The integrated features are subsequently provided to the random forest classifier to predict five classes: background, necrosis, edema, enhancing tumor and non-enhancing tumor, and then these class labels are used to hierarchically compute three different regions (complete tumor, active tumor and enhancing tumor). We performed a leave-one-out cross-validation and achieved 88% Dice overlap for the complete tumor region, 75% for the core tumor region and 95% for enhancing tumor region, which is higher than the Dice overlap reported from MICCAI BraTS challenge. |
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