CT-Net: Cascaded T-shape network using spectral redundancy for dual-energy CT limited-angle reconstruction
CT-Net: Cascaded T-shape network using spectral redundancy for dual-energy CT limited-angle reconstruction
复制标题
CT-Net:使用谱冗余的级联T形网络进行双能CT有限角度重建
DOI:
10.1016/j.bspc.2022.104072
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发表时间:
2023-01
影响因子:
5.1
通讯作者:
Yang Chen
中科院分区:
文献类型:
--
作者:
Kai Chen;Guohui Ji;Chenrui Wang;Zhiguang Peng;Xu Ji;Hui Tang;Chunfeng Yang;Yang Chen
Dual-energy computed tomography (DECT) shows promising clinical significance in substance identification and quantitative analysis. Mostly dual-energy CT scanning systems use two sets of x-ray sources and detectors for full scanning to simultaneously acquire X-ray data of materials at high- and low-energy levels. The reconstructed high- and low-energy CT images have spectral redundancy in the energy domain. We propose a one-step dual-energy limited-angle reconstruction scheme exploiting the energy domain spectral redundancy. The scheme consists of a sinogram domain network(SD-Net), a reconstruction unit(RU), and an image domain network(ID-Net). After SD-Net complements the dual-energy limited-angle incomplete projection data, a RU is used to reconstruct the CT images. Finally, ID-Net processes the reconstructed CT images into high-quality CT images. We propose a Cascaded T-shape Network(CT-Net) based on spectral redundancy to improve DECT image quality. The CT-Net consists of a backbone net, a low-energy branch, and a high-energy branch. CT-Net can directly map incomplete projection data into high-quality DECT images that can be used for clinical diagnosis. Qualitative and quantitative results demonstrate the excellent performance of CT-Net in preserving edges, removing artifacts, and suppressing noise. Two common DECT applications, such as virtual non-contrast (VNC) imaging and iodine contrast agent quantification, prove the clinically promising potential of CT-Net.
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影响因子:
5.4
作者:
Zhao, Hang;Gallo, Orazio;Kautz, Jan
通讯作者:
Kautz, Jan
影响因子:
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影响因子:
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通讯作者:
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影响因子:
3.3
作者:
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通讯作者:
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