MRI Gibbs-ringing artifact reduction by means of machine learning using convolutional neural networks

Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine
Qianqian ZhangYanqiu Feng

Abstract

To develop a machine learning approach using convolutional neural network for reducing MRI Gibbs-ringing artifact. Gibbs-ringing artifact in MR images is caused by insufficient sampling of the high frequency data. Existing methods exploit smooth constraints to reduce intensity oscillations near sharp edges at the cost of blurring details. In this work, we developed a machine learning approach for removing the Gibbs-ringing artifact from MR images. The ringing artifact was extracted from the original image using a deep convolutional neural network and then subtracted from the original image to obtain the artifact-free image. Finally, its low-frequency k-space data were replaced with measured counterparts to enforce data fidelity further. We trained the convolutional neural network using 17,532 T2-weighted (T2W) normal brain images and evaluated its performance on T2W images of normal and tumor brains, diffusion-weighted brain images, and T2W knee images. The proposed method effectively removed the ringing artifact without noticeable smoothing in T2W and diffusion-weighted images. Quantitatively, images produced by the proposed method were closer to the fully-sampled reference images in terms of the root-mean-square error, peak s...Continue Reading

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Citations

Jul 15, 2020·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Matthew J MuckleyFlorian Knoll
Jun 9, 2020·Topics in Magnetic Resonance Imaging : TMRI·Xuan V NguyenLuciano M Prevedello
Aug 25, 2020·Journal of Magnetic Resonance Imaging : JMRI·Akshay S ChaudhariCurtis P Langlotz
Dec 17, 2020·ACS Chemical Neuroscience·Jiajia ZhaoHaitao Sun
Oct 7, 2021·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Linfang XiaoEd X Wu

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