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Regularization for inverting the radon transform with wedge consideration

Publication ,  Journal Article
Aganj, I; Bartesaghi, A; Borgnia, M; Liao, HY; Sapiro, G; Subramaniam, S
Published in: 2007 4th IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings
November 27, 2007

In limited angle tomography, with applications such as electron microscopy, medical imaging, and industrial testing, the object of interest is scanned over a limited angular range, which is less than the full 180° mathematically required for density reconstruction. The use of standard full-range reconstruction algorithms produces results widi notorious "butterfly" or "wedge" artifacts. In this work we propose a reconstruction technique with a regularization term that takes into account the orientation of the missing angular range, also denoted as missing wedge. We show that a regularization diat penalizes non-uniformly in the orientation space produces reconstructions with less artifacts, thereby improving the recovery of the "invisible" edges due to the missing wedge. We present the underlying framework and results for a challenging phantom and real cryo-electron microscopy data. © 2007 IEEE.

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Published In

2007 4th IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings

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Publication Date

November 27, 2007

Start / End Page

217 / 220
 

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Aganj, I., Bartesaghi, A., Borgnia, M., Liao, H. Y., Sapiro, G., & Subramaniam, S. (2007). Regularization for inverting the radon transform with wedge consideration. 2007 4th IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings, 217–220. https://doi.org/10.1109/ISBI.2007.356827
Aganj, I., A. Bartesaghi, M. Borgnia, H. Y. Liao, G. Sapiro, and S. Subramaniam. “Regularization for inverting the radon transform with wedge consideration.” 2007 4th IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings, November 27, 2007, 217–20. https://doi.org/10.1109/ISBI.2007.356827.
Aganj I, Bartesaghi A, Borgnia M, Liao HY, Sapiro G, Subramaniam S. Regularization for inverting the radon transform with wedge consideration. 2007 4th IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings. 2007 Nov 27;217–20.
Aganj, I., et al. “Regularization for inverting the radon transform with wedge consideration.” 2007 4th IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings, Nov. 2007, pp. 217–20. Scopus, doi:10.1109/ISBI.2007.356827.
Aganj I, Bartesaghi A, Borgnia M, Liao HY, Sapiro G, Subramaniam S. Regularization for inverting the radon transform with wedge consideration. 2007 4th IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings. 2007 Nov 27;217–220.

Published In

2007 4th IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings

DOI

Publication Date

November 27, 2007

Start / End Page

217 / 220