Reproducible Evaluation of Data Augmentation and Loss Functions for Brain Tumor Segmentation
This work addresses challenges in brain tumor segmentation for medical diagnosis and treatment planning, but it is incremental as it focuses on reproducible evaluation of existing methods.
The study tackled brain tumor segmentation by evaluating U-Net performance with focal loss and data augmentation on MRI data, achieving 90% precision comparable to state-of-the-art results.
Brain tumor segmentation is crucial for diagnosis and treatment planning, yet challenges such as class imbalance and limited model generalization continue to hinder progress. This work presents a reproducible evaluation of U-Net segmentation performance on brain tumor MRI using focal loss and basic data augmentation strategies. Experiments were conducted on a publicly available MRI dataset, focusing on focal loss parameter tuning and assessing the impact of three data augmentation techniques: horizontal flip, rotation, and scaling. The U-Net with focal loss achieved a precision of 90%, comparable to state-of-the-art results. By making all code and results publicly available, this study establishes a transparent, reproducible baseline to guide future research on augmentation strategies and loss function design in brain tumor segmentation.