Non-local texture learning approach for CT imaging problems using convolutional neural network

Sui Li; Lisha Yao; Manman Zhu; Danyang Li; Qi Gao; Xinyu Zhang; Rikui Zhong; Zhaoying Bian; Dong Zeng; Jianhua Ma Sr.

doi:10.1117/12.2548949

16 March 2020 Non-local texture learning approach for CT imaging problems using convolutional neural network

Sui Li, Lisha Yao, Manman Zhu, Danyang Li, Qi Gao, Xinyu Zhang, Rikui Zhong, Zhaoying Bian, Dong Zeng, Jianhua Ma Sr.

Proceedings Volume 11312, Medical Imaging 2020: Physics of Medical Imaging; 113124B (2020) https://doi.org/10.1117/12.2548949
Event: SPIE Medical Imaging, 2020, Houston, Texas, United States

Abstract

Deep learning-based algorithms have been widely used in the low-dose CT imaging field, and have achieved promising results. However, most of these algorithms only consider the information of the desired CT image itself, ignoring the external information that can help improve the imaging performance. Therefore, in this study, we present a convolutional neural network for low-dose CT reconstruction with non-local texture learning (NTL-CNN) approach. Specifically, different from the traditional network in CT imaging, the presented NTL- CNN approach takes into consideration the non-local features within the adjacent slices in 3D CT images. Then, both low-dose target CT images and the non-local features feed into the residual network to produce desired high-quality CT images. Real patient datasets are used to evaluate the performance of the presented NTL-CNN. The corresponding experiment results demonstrate that the presented NTL-CNN approach can obtain better CT images compared with the competing approaches, in terms of noise-induced artifacts reduction and structure details preservation.

Citation Download Citation

Sui Li, Lisha Yao, Manman Zhu, Danyang Li, Qi Gao, Xinyu Zhang, Rikui Zhong, Zhaoying Bian, Dong Zeng, and Jianhua Ma Sr. "Non-local texture learning approach for CT imaging problems using convolutional neural network", Proc. SPIE 11312, Medical Imaging 2020: Physics of Medical Imaging, 113124B (16 March 2020); https://doi.org/10.1117/12.2548949

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KEYWORDS

Computed tomography

Convolution

Convolutional neural networks

3D image processing

CT reconstruction

3D acquisition

Neural networks

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