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Cited by 245

The DOI matches its Crossref record; 5 of the 5 references it cites were found in a registry or an index.

Deep Learning Computed Tomography: Learning Projection-Domain Weights From Image Domain in Limited Angle Problems

Würfl, Tobias, Hoffmann, Mathis, Christlein, Vincent, Breininger, Katharina, Huang, Yixin, Unberath, Mathias, Maier, Andreas K.·2018·IEEE Transactions on Medical Imaging

Abstract

In this paper, we present a new deep learning framework for 3-D tomographic reconstruction. To this end, we map filtered back-projection-type algorithms to neural networks. However, the back-projection cannot be implemented as a fully connected layer due to its memory requirements. To overcome this problem, we propose a new type of cone-beam back-projection layer, efficiently calculating the forward pass. We derive this layer's backward pass as a projection operation. Unlike most deep learning approaches for reconstruction, our new layer permits joint optimization of correction steps in volume and projection domain. Evaluation is performed numerically on a public data set in a limited angle setting showing a consistent improvement over analytical algorithms while keeping the same computational test-time complexity by design. In the region of interest, the peak signal-to-noise ratio has increased by 23%. In addition, we show that the learned algorithm can be interpreted using known concepts from cone beam reconstruction: the network is able to automatically learn strategies such as compensation weights and apodization windows.

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Metadata

Authors
Würfl, T., Hoffmann, M., Christlein, V., Breininger, K., Huang, Y., Unberath, M., & Maier, A. K.
Venue
IEEE Transactions on Medical Imaging
Published
2018-06
Volume
37
Issue
6
Pages
1454-1463
ISSN
  • 0278-0062 (ISSN-L)
  • 1558-254X
OpenAlex
W2803086176
Cited by
245
References
5
FWCI
18.27
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Deep Learning Computed Tomography: Learning Projection-Domain Weights From Image Domain in Limited Angle Problems. https://app.cochat.ai/papers/10.1109/tmi.2018.2833499
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Würfl, T., Hoffmann, M., Christlein, V., Breininger, K., Huang, Y., Unberath, M., & Maier, A. K. (2018). Deep Learning Computed Tomography: Learning Projection-Domain Weights From Image Domain in Limited Angle Problems. IEEE Transactions on Medical Imaging. https://doi.org/10.1109/tmi.2018.2833499

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