Abstract
The acquisition constraints in MRI images may affect the medical diagnosis and post-processing in the treatment, given to the patients. There is a need for enhancement in MRI images for the accurate diagnosis of disease. There are various image processing techniques available in the literature to enhance images for a particular optimization of a parameter. But such techniques not only fail to optimize all the parameters needed to enhance an image but also sometimes fail to preserve the edges. Therefore, to overcome such problems, one of the approaches is a machine learning-based network which helps to optimize all the parameters in one go. In this paper, a machine learning-based approach, based on Cycle Generative Adversarial Network is proposed to improve contrast of brain MRI images. The proposed model consists of two generators and a discriminator. The ‘Generator1’ maps the features of input image to corresponding high-contrast image. The generated image is passed to the discriminator for the classification. The ‘Generator 2’ reconstructs the input image back. It not only improves the information content by enhancing the contrast of MRI images but also preserves the necessary edges required for accurate diagnosis. In addition, the noise is easily removed while processing of images. We have derived the dataset of our own consisting of low- and high-contrast MRI images for training and testing purpose. This technique exhibits excellent results in comparison to other techniques available in the literature. Our model outperforms state-of-the-art methods with best performance parametric value in all aspects.













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Sharma, S., Vaish, V. & Gupta, S. An Optimized MRI Contrast Enhancement Scheme Using Cycle Generative Adversarial Network. SN COMPUT. SCI. 3, 366 (2022). https://doi.org/10.1007/s42979-022-01261-3
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DOI: https://doi.org/10.1007/s42979-022-01261-3