On the optimization of the geometric pattern for structured illumination based X‐ray phase contrast and dark‐field imaging: a simulation study and its experimental validation.
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| Title: | On the optimization of the geometric pattern for structured illumination based X‐ray phase contrast and dark‐field imaging: a simulation study and its experimental validation. |
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| Authors: | Magnin, Clara1,2 (AUTHOR), Quénot, Laurene1 (AUTHOR), Cenda, Dan Mihai2 (AUTHOR), Lantz, Blandine2 (AUTHOR), Faure, Bertrand2 (AUTHOR), Brun, Emmanuel1 (AUTHOR) emmanuel.brun@inserm.fr |
| Source: | Journal of Synchrotron Radiation. May2026, Vol. 33 Issue 3, p806-817. 12p. |
| Subjects: | X-ray imaging, Image reconstruction, Interferometry, Diagnostic imaging |
| Abstract: | Phase contrast and dark‐field imaging are relatively new X‐ray imaging modalities that provide additional information to conventional attenuation‐based imaging. However, this new information comes at the price of a more complex acquisition scheme and optical components. Among the different techniques available, such as grating interferometry or edge illumination, modulation‐based and more generally single‐mask/grid imaging techniques simplify these new procedures to obtain phase and dark‐field images by shifting the experimental complexity to the numerical post‐processing side. This family of techniques involves inserting a membrane into the X‐ray beam that locally modulates the intensity to create a pattern on the detector which serves as a reference. However, the topological nature of the mask used seems to determine the quality of the reconstructed phase and dark‐field images. We present in this article an in‐depth study of the impact of the membrane parameters used in a single‐mask imaging approach. A spiral topology seems to be an optimum both in terms of resolution and contrast‐to‐noise ratio compared with random and regular patterns. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Synchrotron Radiation is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Abstract: | Phase contrast and dark‐field imaging are relatively new X‐ray imaging modalities that provide additional information to conventional attenuation‐based imaging. However, this new information comes at the price of a more complex acquisition scheme and optical components. Among the different techniques available, such as grating interferometry or edge illumination, modulation‐based and more generally single‐mask/grid imaging techniques simplify these new procedures to obtain phase and dark‐field images by shifting the experimental complexity to the numerical post‐processing side. This family of techniques involves inserting a membrane into the X‐ray beam that locally modulates the intensity to create a pattern on the detector which serves as a reference. However, the topological nature of the mask used seems to determine the quality of the reconstructed phase and dark‐field images. We present in this article an in‐depth study of the impact of the membrane parameters used in a single‐mask imaging approach. A spiral topology seems to be an optimum both in terms of resolution and contrast‐to‐noise ratio compared with random and regular patterns. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 09090495 |
| DOI: | 10.1107/S1600577526003176 |
