Gradient-Guided Convolutional Neural Network for MRI Image Super-Resolution

Xiaofeng Du, Yifan He
2019 Applied Sciences  
Super-resolution (SR) technology is essential for improving image quality in magnetic resonance imaging (MRI). The main challenge of MRI SR is to reconstruct high-frequency (HR) details from a low-resolution (LR) image. To address this challenge, we develop a gradient-guided convolutional neural network for improving the reconstruction accuracy of high-frequency image details from the LR image. A gradient prior is fully explored to supply the information of high-frequency details during the
more » ... ails during the super-resolution process, thereby leading to a more accurate reconstructed image. Experimental results of image super-resolution on public MRI databases demonstrate that the gradient-guided convolutional neural network achieves better performance over the published state-of-art approaches.
doi:10.3390/app9224874 fatcat:5vzut3xsknchpfkx3zdpo776qi