Non-Invasive Glioma vs. Meningioma Discrimination on MRI: A Comparative Study of Baseline CNN, Transfer-Learned AlexNet and Custom FF-CNN Architectures
DOI:
https://doi.org/10.29304/jqcsm.2025.17.42578Keywords:
brain tumor classification;, magnetic resonance imaging (MRI);, deep learning; convolutional neural networks (CNN); transfer learning; AlexNet; FF-CNN;, glioma; meningioma; non-invasive diagnosis.Abstract
Brain tumoruzrds are a group of very aggressive and frequently fatal neurological diseases and early and accurate diagnosis are required for successful therapy and for increased patient survival. Traditional diagnostic methods, including histopathological examination using surgical biopsies, are the only gold standard tests for diagnosis, but are invasive, time-consuming, and risky—associated with a high risk of infection, hemorrhage and neurological complications. The emergence of machine learning, in particularly deep learning has provided an unprecedented non-invasive tumour detection/classification tools which has transformed the medical imaging analysis field.
Here we investigate and benchmark three deep learning architectures for classifying brain tumors on magnetic resonance images (MRI): a baseline CNN, a modified pre-trained AlexNet via transfer learning, and a custom FF-CNN tailored for our problem. The models were trained and tested on a curated Brain Tumor MRI dataset containing annotated images of two major tumour types: glioma and meningioma.
For CNN, AlexNet, FF-CNN, the classification accuracies were 97.1%, 98.6%, and 95.1%, respectively. The better performance of the AlexNet is due to its higher depth and its possibility to be used as a transfer learning model able to perform strong feature extraction on small medical datasets. Taken together, they demonstrate the substantial potential of DL methods for quick, accurate and non-invasive detection of brain tumors. Incorporating such technologies into clinical decision support systems can greatly improve radiological workflow efficiency, reduce diagnostic delay, and eventually improve the quality of patient care and prognostication.
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Copyright (c) 2025 Bahaa Salih Mandeel, Diyaa Kareem Abd-Alhmza, Waad Saad Hindil, Manar Raad Abdalhassan, Muntadher adnan waheed

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