Brain tumors, particularly gliomas, pose a significant threat to global health, necessitating accurate and efficient diagnostic methods. Magnetic Resonance Imaging (MRI) serves as a crucial tool for diagnosing glioma grades, but interpretation is subject to variability, hindering treatment planning. Intra and inter-observer variability in radiological image interpretation impede effective therapeutic strategies for brain tumor patients. Accessing relevant images from vast medical databases for comparison and treatment planning is cumbersome and time-consuming. This paper proposes a Content-Based Medical Image Retrieval (CBIR) system utilizing Convolutional Neural Network (CNN)-based feature extraction, specifically employing the AlexNet architecture. The system employs KNN clustering for indexing the feature map database and implements Gain-based feature selection to reduce feature vector dimensionality. The proposed system underwent evaluation using BraTS 2018 and 2020 datasets with five-fold cross-validation. Achieving state-of-the-art performance, the system demonstrated a mean Average Precision of 98% and Precision of 97%, showcasing its efficacy in accurately retrieving similar pathological MRI brain images.
N. Kanagavalli1, Shaik Hameeda2, R. Dinesh3, N. Vijayaraghavan4
Rajalakshmi Institute of Technology, India1, Avanthi Institute of Engineering and Technology, India2, Excel Engineering College, India3, Prathyusha Engineering College, India4
Brain Tumors, Magnetic Resonance Imaging (MRI), Content-Based Image Retrieval (CBIR), Convolutional Neural Network (CNN), BraTS Dataset
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| Published By :
ICTACT
Published In :
ICTACT Journal on Image and Video Processing
( Volume: 14 , Issue: 4 , Pages: 3258 - 3263 )
Date of Publication :
May 2024
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