Multi-Contrast Brain MRI Image Super-Resolution With Gradient-Guided Edge Enhancement

	Multi-Contrast Brain MRI Image Super-Resolution With Gradient-Guided Edge Enhancement
	Peng, Xi; Chen, Zhong; Qu, Xiaobo; Zheng, Hong; Zeng, Kun; Guo, Di; Ying, Jiaxi; Yang, Yu; Huang, Feng
刊名	IEEE ACCESS
	2018
文献子类	期刊论文
英文摘要	In magnetic resonance imaging (MRI), the super-resolution technology has played a great role in improving image quality. The aim of this paper is to improve edges of brain MRI by incorporating the gradient information of another contrast high-resolution image. Multi-contrast images are assumed to possess the same gradient direction in a local pattern. We proposed to establish a relation model of gradient value between different contrast images to restore a high-resolution image from its input low-resolution version. The similarity of image patches is employed to estimate intensity parameters, leading a more accurate reconstructed image. Then, an iterative back-projection filter is applied to the reconstructed image to further increase the image quality. The new approach is verified on synthetic and real brain MRI images and achieves higher visual quality and higher objective quality criteria than the compared state-of-the-art super-resolution approaches. The gradient information of the multi-contrast MRI images is very useful. With a proper relation model, the proposed method enhances image edges in MRI image super-resolution. Improving the MRI image resolution from very low-resolution observations is challenging. We tackle this problem by first modeling the relation of gradient value in multi-contrast MRI and then performing fast supper-resolution methods. This relation model may be helpful for other MRI reconstruction problems.
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/14369]
专题	深圳先进技术研究院_医工所
推荐引用方式 GB/T 7714	Peng, Xi,Chen, Zhong,Qu, Xiaobo,et al. Multi-Contrast Brain MRI Image Super-Resolution With Gradient-Guided Edge Enhancement[J]. IEEE ACCESS,2018.
APA	Peng, Xi.,Chen, Zhong.,Qu, Xiaobo.,Zheng, Hong.,Zeng, Kun.,...&Huang, Feng.(2018).Multi-Contrast Brain MRI Image Super-Resolution With Gradient-Guided Edge Enhancement.IEEE ACCESS.
MLA	Peng, Xi,et al."Multi-Contrast Brain MRI Image Super-Resolution With Gradient-Guided Edge Enhancement".IEEE ACCESS (2018).