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High-resolution magnetic resonance images can display richer texture details and facilitate doctors' diagnosis of the disease. However, limited by hardware equipment, the resolution of clinical magnetic resonance images is close to the physical limit. Many studies use super-resolution reconstruction to enhance magnetic resonance images, but they ignore the image noise due to voltage fluctuations and patient jitter. Direct super-resolution reconstruction of the image will amplify these noises, and denoising first will blur the image to a certain extent. To address this issue, we propose a denoising-supervised Generative Adversarial Network for super-resolution reconstruction of magnetic resonance images. The generator of the network uses the residual information distillation module to separate the features so that the discriminator can guide it to restore the image. The network contains two discriminators, a sample discriminator and a noise discriminator. The sample discriminator assists the generator to fit the real sample distribution, and the noise discriminator assists the generator to suppress noise. Qualitative and quantitative experiments show that the noise discriminator can effectively suppress the generation of noise in the super-resolution task. Compared with advanced methods on the IXI dataset, the proposed network achieves the highest reconstruction quality (PSNR and SSIM). © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
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ISSN: 1876-1100
年份: 2023
卷: 1019 LNEE
页码: 3-11
语种: 英文
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