A Dual-Domain CNN-Based Network for CT Reconstruction
| Autor: | Yanling Wang, Yi Liu, Pengcheng Zhang, Zhiguo Gui, Fengyuan Jiao, Hong Shangguang, Kunpeng Li |
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| Rok vydání: | 2021 |
| Předmět: |
General Computer Science
Computer science Convolutional neural network 02 engineering and technology Iterative reconstruction Field (computer science) 030218 nuclear medicine & medical imaging Domain (software engineering) 03 medical and health sciences 0302 clinical medicine 0202 electrical engineering electronic engineering information engineering Medical imaging General Materials Science Computer vision Layer (object-oriented design) Projection (set theory) business.industry between-manifold projection Deep learning General Engineering deep learning TK1-9971 CT~reconstruction 020201 artificial intelligence & image processing Electrical engineering. Electronics. Nuclear engineering Artificial intelligence business |
| Zdroj: | IEEE Access, Vol 9, Pp 71091-71103 (2021) |
| ISSN: | 2169-3536 |
| Popis: | Convolutional neural network (CNN)-based deep learning techniques have enjoyed many successful applications in the field of medical imaging. However, the complicated between-manifold projection from the projection domain to the spatial domain hinders the direct application of CNN techniques in computed tomography (CT) reconstruction. In this work, we proposed a novel CT reconstruction framework based on a CNN, i.e., an intelligent back-projection network (iBP-Net). The proposed iBP-Net method fused a pre-CNN, a back-projection layer, and a post-CNN into an end-to-end network. The pre-CNN adopted CNN techniques to model a filtering operation in the projection domain. In the back-projection layer, a back-projection operation was employed to perform between-manifold projection. Based on CNN techniques, the post-CNN worked together with the pre-CNN to recover reconstructed images from the outputs of the back-projection layer in the spatial domain while maintaining high visual sensitivity. The experimental results demonstrate the feasibility of the proposed iBP-Net framework for CT reconstruction. |
| Databáze: | OpenAIRE |
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