In situ propagation-based lung computed tomography for large animal models
The lung is a complex organ with a hierarchical structure, containing four times more air than tissue. It is in constant contact with environmental factors such as pollution and pathogens, leading to pathological alterations at various hierarchical levels. Because of its intricate structure and cont...
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| Main Authors: | , , , , , , , , , , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
November 2025
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| In: |
Journal of synchrotron radiation
Year: 2025, Volume: 32, Issue: 6, Pages: 1511-1522 |
| ISSN: | 1600-5775 |
| DOI: | 10.1107/S160057752500832X |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.1107/S160057752500832X Verlag, kostenfrei, Volltext: https://journals.iucr.org/s/issues/2025/06/00/mo5306/ 
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| Author Notes: | Lorenzo D’Amico, Lucy Costello, Yakov Nesterets, Martin Donnelley, Timur Gureyev, Anton Maksimenko, Cathy Beck, Jannis Ahlers,Ronan Smith, Ying Ying How, David Parsons, Chris Hall, Daniel Hausermann, Matthew Cameron, Mitzi Klein, Marcus Kitchen, Giuliana Tromba, Christian Dullinb, and Kaye Morgana |
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| 245 | 1 | 0 | |a In situ propagation-based lung computed tomography for large animal models |c Lorenzo D’Amico, Lucy Costello, Yakov Nesterets, Martin Donnelley, Timur Gureyev, Anton Maksimenko, Cathy Beck, Jannis Ahlers,Ronan Smith, Ying Ying How, David Parsons, Chris Hall, Daniel Hausermann, Matthew Cameron, Mitzi Klein, Marcus Kitchen, Giuliana Tromba, Christian Dullinb, and Kaye Morgana |
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| 520 | |a The lung is a complex organ with a hierarchical structure, containing four times more air than tissue. It is in constant contact with environmental factors such as pollution and pathogens, leading to pathological alterations at various hierarchical levels. Because of its intricate structure and continuous movement, lung imaging presents significant challenges for most existing techniques. Recent advancements in phase-contrast computed tomography and photon-counting detectors have greatly enhanced lung imaging capabilities. Specifically, propagation-based imaging (PBI), a phase-contrast method that does not require optical elements, has proven particularly effective at low X-ray dose rates due to the strong phase shifts between lung tissue and aerated regions. This study introduces an in situ imaging approach for large-scale lungs using PBI at the Imaging and Medical Beamline (IMBL) of the Australian Synchrotron. We investigated optimal conditions for PBI, including energy and propagation distance settings, and found that an X-ray beam energy of 70 keV combined with a 7 m propagation distance yields the highest image quality in terms of contrast-to-noise ratio while also delivering the lowest radiation dose. Furthermore, Monte Carlo simulations were performed on the reconstructed volume to calculate absorbed radiation doses in tissues. These findings provide valuable insights for designing future experiments aimed at minimizing radiation exposure and potentially enable in vivo applications in larger animals or even humans. | ||
| 700 | 1 | |a Costello, L. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Nesterets, Y. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Donnelley, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Gureyev, T. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Maksimenko, A. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Beck, C. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Ahlers, J. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Smith, R. |e VerfasserIn |4 aut | |
| 700 | 1 | |a How, Y. Y. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Parsons, D. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Hall, C. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Hausermann, D. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Cameron, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Klein, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Kitchen, M. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Tromba, G. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Dullin, Christian |e VerfasserIn |0 (DE-588)1254836845 |0 (DE-627)1797619551 |4 aut | |
| 700 | 1 | |a Morgan, K. |e VerfasserIn |4 aut | |
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