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Xin X, Jian J, Fan X, Qi B, Zhao Y, Lv W, Zhao Y, Zhao X, Hu C. Multiscale X-ray phase-contrast CT unveils the evolution of bile infarct in obstructive biliary disease. Commun Biol 2024; 7:490. [PMID: 38654111 DOI: 10.1038/s42003-024-06185-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 04/11/2024] [Indexed: 04/25/2024] Open
Abstract
Bile infarct is a pivotal characteristic of obstructive biliary disease, but its evolution during the disease progression remains unclear. Our objective, therefore, is to explore morphological alterations of the bile infarct in the disease course by means of multiscale X-ray phase-contrast CT. Bile duct ligation is performed in mice to mimic the obstructive biliary disease. Intact liver lobes of the mice are scanned by phase-contrast CT at various resolution scales. Phase-contrast CT clearly presents three-dimensional (3D) images of the bile infarcts down to the submicron level with good correlation with histological images. The CT data illustrates that the infarct first appears on day 1 post-BDL, while a microchannel between the infarct and hepatic sinusoids is identified, the number of which increases with the disease progression. A 3D model of hepatic acinus is proposed, in which the infarct starts around the portal veins (zone I) and gradually progresses towards the central veins (zone III) during the disease process. Multiscale phase-contrast CT offers the comprehensive analysis of the evolutionary features of the bile infarct in obstructive biliary disease. During the course of the disease, the bile infarcts develop infarct-sinusoidal microchannels and gradually occupy the whole liver, promoting the disease progression.
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Affiliation(s)
- Xiaohong Xin
- School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin, 300070, China
| | - Jianbo Jian
- Department of Radiation Oncology, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Xu Fan
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
- Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis and National Clinical Research Center of Digestive Disease, Beijing, 100050, China
| | - Beining Qi
- School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin, 300070, China
| | - Yuanyuan Zhao
- School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin, 300070, China
| | - Wenjuan Lv
- School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin, 300070, China
| | - Yuqing Zhao
- School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin, 300070, China
| | - Xinyan Zhao
- Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China.
- Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis and National Clinical Research Center of Digestive Disease, Beijing, 100050, China.
| | - Chunhong Hu
- School of Biomedical Engineering and Technology, Tianjin Medical University, Tianjin, 300070, China.
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Häggmark I, Hoshino M, Uesugi K, Sasaki T. X-ray phase contrast reveals soft tissue and shell growth lines in mollusks. Commun Biol 2024; 7:17. [PMID: 38172227 PMCID: PMC10764734 DOI: 10.1038/s42003-023-05457-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 10/13/2023] [Indexed: 01/05/2024] Open
Abstract
High-resolution 3D imaging of species with exoskeletons such as shell-bearing mollusks typically involves destructive steps. Nondestructive alternatives are desirable since samples can be rare and valuable, and destructive steps are time-consuming and may distort the tissue. Here, we show for the first time that propagation-based phase-contrast X-ray imaging can significantly increase contrast in mollusks with intact shells. By using the recently upgraded monochromator at the SPring-8 BL20B2 synchrotron beamline, we imaged six species of mollusks, showing that X-ray phase contrast enhances soft-tissue contrast. Features that are almost invisible in conventional attenuation-based micro-computed tomography (micro-CT) are clearly reproduced with phase-contrast imaging under the same scan conditions. Furthermore, this method can reveal features such as growth rings in the shell and differentiate between calcite and aragonite crystal forms. Phase-contrast imaging can thus serve as a compelling alternative when destructive methods are not an option.
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Affiliation(s)
- Ilian Häggmark
- The University Museum, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
| | - Masato Hoshino
- Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto, Sayo, Hyogo, 679-5198, Japan
| | - Kentaro Uesugi
- Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto, Sayo, Hyogo, 679-5198, Japan
| | - Takenori Sasaki
- The University Museum, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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