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Chourrout M, Sandt C, Weitkamp T, Dučić T, Meyronet D, Baron T, Klohs J, Rama N, Boutin H, Singh S, Olivier C, Wiart M, Brun E, Bohic S, Chauveau F. Virtual histology of Alzheimer's disease: Biometal entrapment within amyloid-β plaques allows for detection via X-ray phase-contrast imaging. Acta Biomater 2023; 170:260-272. [PMID: 37574159 DOI: 10.1016/j.actbio.2023.07.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 07/21/2023] [Accepted: 07/25/2023] [Indexed: 08/15/2023]
Abstract
Amyloid-β (Aβ) plaques from Alzheimer's Disease (AD) can be visualized ex vivo in label-free brain samples using synchrotron X-ray phase-contrast tomography (XPCT). However, for XPCT to be useful as a screening method for amyloid pathology, it is essential to understand which factors drive the detection of Aβ plaques. The current study was designed to test the hypothesis that Aβ-related contrast in XPCT could be caused by Aβ fibrils and/or by metals trapped in the plaques. Fibrillar and elemental compositions of Aβ plaques were probed in brain samples from different types of AD patients and AD models to establish a relationship between XPCT contrast and Aβ plaque characteristics. XPCT, micro-Fourier-Transform Infrared spectroscopy and micro-X-Ray Fluorescence spectroscopy were conducted on human samples (one genetic and one sporadic case) and on four transgenic rodent strains (mouse: APPPS1, ArcAβ, J20; rat: TgF344). Aβ plaques from the genetic AD patient were visible using XPCT, and had higher β-sheet content and higher metal levels than those from the sporadic AD patient, which remained undetected by XPCT. Aβ plaques in J20 mice and TgF344 rats appeared hyperdense on XPCT images, while they were hypodense with a hyperdense core in the case of APPPS1 and ArcAβ mice. In all four transgenic strains, β-sheet content was similar, while metal levels were highly variable: J20 (zinc and iron) and TgF344 (copper) strains showed greater metal accumulation than APPPS1 and ArcAβ mice. Hence, a hyperdense contrast formation of Aβ plaques in XPCT images was associated with biometal entrapment within plaques. STATEMENT OF SIGNIFICANCE: The role of metals in Alzheimer's disease (AD) has been a subject of continuous interest. It was already known that amyloid-β plaques (Aβ), the earliest hallmark of AD, tend to trap endogenous biometals like zinc, iron and copper. Here we show that this metal accumulation is the main reason why Aβ plaques are detected with a new technique called X-ray phase contrast tomography (XPCT). XPCT enables to map the distribution of Aβ plaques in the whole excised brain without labeling. In this work we describe a unique collection of four transgenic models of AD, together with a human sporadic and a rare genetic case of AD, thus exploring the full spectrum of amyloid contrast in XPCT.
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Affiliation(s)
- Matthieu Chourrout
- Univ. Lyon, Lyon Neuroscience Research Center (CRNL); CNRS UMR5292; INSERM U1028, Univ. Lyon 1, Lyon, France
| | | | | | - Tanja Dučić
- ALBA-CELLS Synchrotron, MIRAS Beamline, Cerdanyola del Vallès, Spain
| | - David Meyronet
- Hospices Civils de Lyon, Neuropathology Department, Lyon, France; Univ. Lyon, Cancer Research Center of Lyon (CRCL); INSERM U1052; CNRS UMR5286, Univ. Lyon 1; Centre Léon Bérard, Lyon, France
| | | | - Jan Klohs
- ETH Zurich, Institute for Biomedical Engineering, Zurich, Switzerland
| | - Nicolas Rama
- Univ. Lyon, Cancer Research Center of Lyon (CRCL); INSERM U1052; CNRS UMR5286, Univ. Lyon 1; Centre Léon Bérard, Lyon, France
| | - Hervé Boutin
- Univ. Manchester, Faculty of Biology Medicine and Health, Wolfson Molecular Imaging Centre, Manchester, United Kingdom
| | - Shifali Singh
- Univ. Grenoble Alpes, Synchrotron Radiation for Biomedicine (STROBE); Inserm UA7, Grenoble, France
| | - Cécile Olivier
- Univ. Grenoble Alpes, Synchrotron Radiation for Biomedicine (STROBE); Inserm UA7, Grenoble, France
| | - Marlène Wiart
- Univ. Lyon, CarMeN Laboratory; INSERM U1060, INRA U1397, INSA Lyon, Univ. Lyon 1, Lyon, France; CNRS, France
| | - Emmanuel Brun
- Univ. Grenoble Alpes, Synchrotron Radiation for Biomedicine (STROBE); Inserm UA7, Grenoble, France
| | - Sylvain Bohic
- Univ. Grenoble Alpes, Synchrotron Radiation for Biomedicine (STROBE); Inserm UA7, Grenoble, France
| | - Fabien Chauveau
- Univ. Lyon, Lyon Neuroscience Research Center (CRNL); CNRS UMR5292; INSERM U1028, Univ. Lyon 1, Lyon, France; CNRS, France.
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Iyer RR, Renteria CA, Yang L, Sorrells JE, Park J, Sun L, Yu Z, Huang Y, Marjanovic M, Mirica LM, Boppart SA. Tracking the binding of multi-functional fluorescent tags for Alzheimer's disease using quantitative multiphoton microscopy. JOURNAL OF BIOPHOTONICS 2022; 15:e202200105. [PMID: 35686672 PMCID: PMC9728943 DOI: 10.1002/jbio.202200105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 06/08/2022] [Indexed: 06/15/2023]
Abstract
A recent theranostic approach to address Alzheimer's disease (AD) utilizes multifunctional targets that both tag and negate the toxicity of AD biomarkers. These compounds, which emit fluorescence with both an activation and a spectral shift in the presence of Aβ, were previously characterized with traditional fluorescence imaging for binary characterization. However, these multifunctional compounds have broad and dynamic emission spectra that are dependent on factors such as the local environment, presence of Aβ deposits, etc. Since quantitative multiphoton microscopy is sensitive to the binding dynamics of molecules, we characterized the performance of two such compounds, LS-4 and ZY-12-OMe, using Simultaneous Label-free Autofluorescence Multi-harmonic (SLAM) microscopy and Fast Optical Coherence, Autofluorescence Lifetime imaging and Second harmonic generation (FOCALS) microscopy. This study shows that the combination of quantitative multiphoton imaging with multifunctional tags for AD offers new insights into the interaction of these tags with AD biomarkers and the theranostic mechanisms.
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Affiliation(s)
- Rishyashring R. Iyer
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Carlos A. Renteria
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Lingxiao Yang
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Janet E. Sorrells
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Jaena Park
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Liang Sun
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Zhengxin Yu
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Yiran Huang
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Marina Marjanovic
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- The Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Liviu M. Mirica
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- The Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Hope Center for Neurological Disorders, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Stephen A. Boppart
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- The Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Carle Illinois College of Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
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Barbone GE, Bravin A, Mittone A, Pacureanu A, Mascio G, Di Pietro P, Kraiger MJ, Eckermann M, Romano M, Hrabě de Angelis M, Cloetens P, Bruno V, Battaglia G, Coan P. X-ray multiscale 3D neuroimaging to quantify cellular aging and neurodegeneration postmortem in a model of Alzheimer’s disease. Eur J Nucl Med Mol Imaging 2022; 49:4338-4357. [PMID: 35852558 PMCID: PMC9606093 DOI: 10.1007/s00259-022-05896-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 06/25/2022] [Indexed: 01/19/2023]
Abstract
Abstract
Purpose
Modern neuroimaging lacks the tools necessary for whole-brain, anatomically dense neuronal damage screening. An ideal approach would include unbiased histopathologic identification of aging and neurodegenerative disease.
Methods
We report the postmortem application of multiscale X-ray phase-contrast computed tomography (X-PCI-CT) for the label-free and dissection-free organ-level to intracellular-level 3D visualization of distinct single neurons and glia. In deep neuronal populations in the brain of aged wild-type and of 3xTgAD mice (a triply-transgenic model of Alzheimer’s disease), we quantified intracellular hyperdensity, a manifestation of aging or neurodegeneration.
Results
In 3xTgAD mice, the observed hyperdensity was identified as amyloid-β and hyper-phosphorylated tau protein deposits with calcium and iron involvement, by correlating the X-PCI-CT data to immunohistochemistry, X-ray fluorescence microscopy, high-field MRI, and TEM. As a proof-of-concept, X-PCI-CT was used to analyze hippocampal and cortical brain regions of 3xTgAD mice treated with LY379268, selective agonist of group II metabotropic glutamate receptors (mGlu2/3 receptors). Chronic pharmacologic activation of mGlu2/3 receptors significantly reduced the hyperdensity particle load in the ventral cortical regions of 3xTgAD mice, suggesting a neuroprotective effect with locoregional efficacy.
Conclusions
This multiscale micro-to-nano 3D imaging method based on X-PCI-CT enabled identification and quantification of cellular and sub-cellular aging and neurodegeneration in deep neuronal and glial cell populations in a transgenic model of Alzheimer’s disease. This approach quantified the localized and intracellular neuroprotective effects of pharmacological activation of mGlu2/3 receptors.
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Massimi L, Suaris T, Hagen CK, Endrizzi M, Munro PRT, Havariyoun G, Hawker PMS, Smit B, Astolfo A, Larkin OJ, Waltham RM, Shah Z, Duffy SW, Nelan RL, Peel A, Jones JL, Haig IG, Bate D, Olivo A. Volumetric High-Resolution X-Ray Phase-Contrast Virtual Histology of Breast Specimens With a Compact Laboratory System. IEEE TRANSACTIONS ON MEDICAL IMAGING 2022; 41:1188-1195. [PMID: 34941505 PMCID: PMC7612751 DOI: 10.1109/tmi.2021.3137964] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The assessment of margin involvement is a fundamental task in breast conserving surgery to prevent recurrences and reoperations. It is usually performed through histology, which makes the process time consuming and can prevent the complete volumetric analysis of large specimens. X-ray phase contrast tomography combines high resolution, sufficient penetration depth and high soft tissue contrast, and can therefore provide a potential solution to this problem. In this work, we used a high-resolution implementation of the edge illumination X-ray phase contrast tomography based on "pixel-skipping" X-ray masks and sample dithering, to provide high definition virtual slices of breast specimens. The scanner was originally designed for intra-operative applications in which short scanning times were prioritised over spatial resolution; however, thanks to the versatility of edge illumination, high-resolution capabilities can be obtained with the same system simply by swapping x-ray masks without this imposing a reduction in the available field of view. This makes possible an improved visibility of fine tissue strands, enabling a direct comparison of selected CT slices with histology, and providing a tool to identify suspect features in large specimens before slicing. Combined with our previous results on fast specimen scanning, this works paves the way for the design of a multi-resolution EI scanner providing intra-operative capabilities as well as serving as a digital pathology system.
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Chourrout M, Roux M, Boisvert C, Gislard C, Legland D, Arganda-Carreras I, Olivier C, Peyrin F, Boutin H, Rama N, Baron T, Meyronet D, Brun E, Rositi H, Wiart M, Chauveau F. Brain virtual histology with X-ray phase-contrast tomography Part II:3D morphologies of amyloid- β plaques in Alzheimer's disease models. BIOMEDICAL OPTICS EXPRESS 2022; 13:1640-1653. [PMID: 35414980 PMCID: PMC8973161 DOI: 10.1364/boe.438890] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 10/08/2021] [Accepted: 10/12/2021] [Indexed: 05/15/2023]
Abstract
While numerous transgenic mouse strains have been produced to model the formation of amyloid-β (Aβ) plaques in the brain, efficient methods for whole-brain 3D analysis of Aβ deposits have to be validated and standardized. Moreover, routine immunohistochemistry performed on brain slices precludes any shape analysis of Aβ plaques, or require complex procedures for serial acquisition and reconstruction. The present study shows how in-line (propagation-based) X-ray phase-contrast tomography (XPCT) combined with ethanol-induced brain sample dehydration enables hippocampus-wide detection and morphometric analysis of Aβ plaques. Performed in three distinct Alzheimer mouse strains, the proposed workflow identified differences in signal intensity and 3D shape parameters: 3xTg displayed a different type of Aβ plaques, with a larger volume and area, greater elongation, flatness and mean breadth, and more intense average signal than J20 and APP/PS1. As a label-free non-destructive technique, XPCT can be combined with standard immunohistochemistry. XPCT virtual histology could thus become instrumental in quantifying the 3D spreading and the morphological impact of seeding when studying prion-like properties of Aβ aggregates in animal models of Alzheimer's disease. This is Part II of a series of two articles reporting the value of in-line XPCT for virtual histology of the brain; Part I shows how in-line XPCT enables 3D myelin mapping in the whole rodent brain and in human autopsy brain tissue.
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Affiliation(s)
- Matthieu Chourrout
- Univ. Lyon, Lyon Neuroscience Research Center, CNRS UMR5292, Inserm U1028, Université Claude Bernard Lyon 1, Lyon, France
| | - Margaux Roux
- Univ. Lyon, Lyon Neuroscience Research Center, CNRS UMR5292, Inserm U1028, Université Claude Bernard Lyon 1, Lyon, France
| | - Carlie Boisvert
- Univ. Lyon, Lyon Neuroscience Research Center, CNRS UMR5292, Inserm U1028, Université Claude Bernard Lyon 1, Lyon, France
- Current affiliation: Faculty of Medicine, The Ottawa Hospital and University of Ottawa, Ottawa, Ontario, Canada
| | - Coralie Gislard
- Univ. Lyon, Lyon Neuroscience Research Center, CNRS UMR5292, Inserm U1028, Université Claude Bernard Lyon 1, Lyon, France
| | | | - Ignacio Arganda-Carreras
- University of the Basque Country (UPV/EHU), San Sebastian, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain
- Donostia International Physics Center (DIPC), San Sebastian, Spain
| | - Cécile Olivier
- Univ. Lyon, CREATIS; CNRS UMR5220; INSERM U1044; INSA-Lyon; Univ. Lyon 1, Lyon, France
| | - Françoise Peyrin
- Univ. Lyon, CREATIS; CNRS UMR5220; INSERM U1044; INSA-Lyon; Univ. Lyon 1, Lyon, France
| | - Hervé Boutin
- Univ. Manchester, Faculty of Biology Medicine and Health, Wolfson Molecular Imaging Centre, Manchester, UK
| | - Nicolas Rama
- Univ. Lyon, CRCL; INSERM U1052; CNRS UMR5286; Univ. Lyon 1; Centre Léon Bérard, Lyon, France
| | | | | | - Emmanuel Brun
- Univ. Grenoble Alpes, Inserm UA07 Strobe Grenoble, France
| | - Hugo Rositi
- Univ. Clermont Auvergne, Institut Pascal; CNRS UMR 6602; SIGMA Clermont, Clermont-Ferrand, France
| | - Marlène Wiart
- Univ. Lyon, CarMeN Laboratory; INSERM U1060; INRA U1397; Hospices Civils de Lyon, Lyon, France
- CNRS, Lyon, France
- These authors contributed equally to this work
| | - Fabien Chauveau
- Univ. Lyon, Lyon Neuroscience Research Center, CNRS UMR5292, Inserm U1028, Université Claude Bernard Lyon 1, Lyon, France
- CNRS, Lyon, France
- These authors contributed equally to this work
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Virtual histology of an entire mouse brain from formalin fixation to paraffin embedding. Part 1: Data acquisition, anatomical feature segmentation, tracking global volume and density changes. J Neurosci Methods 2021; 364:109354. [PMID: 34529981 DOI: 10.1016/j.jneumeth.2021.109354] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/01/2021] [Accepted: 09/04/2021] [Indexed: 01/14/2023]
Abstract
BACKGROUND Micrometer-resolution neuroimaging with gold-standard conventional histology requires tissue fixation and embedding. The exchange of solvents for the creation of sectionable paraffin blocks modifies tissue density and generates non-uniform brain shrinkage. NEW METHOD We employed synchrotron radiation-based X-ray microtomography for slicing- and label-free virtual histology of the mouse brain at different stages of the standard preparation protocol from formalin fixation via ascending ethanol solutions and xylene to paraffin embedding. Segmentation of anatomical regions allowed us to quantify non-uniform tissue shrinkage. Global and local changes in X-ray absorption gave insight into contrast enhancement for virtual histology. RESULTS The volume of the entire mouse brain was 60%, 56%, and 40% of that in formalin for, respectively, 100% ethanol, xylene, and paraffin. The volume changes of anatomical regions such as the hippocampus, anterior commissure, and ventricles differ from the global volume change. X-ray absorption of the full brain decreased, while local absorption differences increased, resulting in enhanced contrast for virtual histology. These trends were also observed with laboratory microtomography measurements. COMPARISON WITH EXISTING METHODS Microtomography provided sub-10 μm spatial resolution with sufficient density resolution to resolve anatomical structures at each step of the embedding protocol. The spatial resolution of conventional computed tomography and magnetic resonance microscopy is an order of magnitude lower and both do not match the contrast of microtomography over the entire embedding protocol. Unlike feature-to-feature or total volume measurements, our approach allows for calculation of volume change based on segmentation. CONCLUSION We present isotropic micrometer-resolution imaging to quantify morphology and composition changes in a mouse brain during the standard histological preparation. The proposed method can be employed to identify the most appropriate embedding medium for anatomical feature visualization, to reveal the basis for the dramatic X-ray contrast enhancement observed in numerous embedded tissues, and to quantify morphological changes during tissue fixation and embedding.
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Three-dimensional virtual histology of the human hippocampus based on phase-contrast computed tomography. Proc Natl Acad Sci U S A 2021; 118:2113835118. [PMID: 34819378 PMCID: PMC8640721 DOI: 10.1073/pnas.2113835118] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/01/2021] [Indexed: 12/17/2022] Open
Abstract
We demonstrate multiscale phase-contrast X-ray computed tomography (CT) of postmortem human brain tissue. Large tissue volumes can be covered by parallel-beam CT and combined with subcellular detail for selected regions scanned at high magnification. This has been repeated identically for a larger number of individuals, including both Alzheimer’s-diseased patients and a control group. Optimized phase retrieval, followed by automated segmentation based on machine learning, as well as feature identification and classification based on optimal transport theory, indicates a pathway from healthy to pathological structure without prior hypothesis. This study provides a blueprint for studying the cytoarchitecture of the human brain and its alterations associated with neurodegenerative diseases. We have studied the three-dimensional (3D) cytoarchitecture of the human hippocampus in neuropathologically healthy and Alzheimer’s disease (AD) individuals, based on phase-contrast X-ray computed tomography of postmortem human tissue punch biopsies. In view of recent findings suggesting a nuclear origin of AD, we target in particular the nuclear structure of the dentate gyrus (DG) granule cells. Tissue samples of 20 individuals were scanned and evaluated using a highly automated approach of measurement and analysis, combining multiscale recordings, optimized phase retrieval, segmentation by machine learning, representation of structural properties in a feature space, and classification based on the theory of optimal transport. Accordingly, we find that the prototypical transformation between a structure representing healthy granule cells and the pathological state involves a decrease in the volume of granule cell nuclei, as well as an increase in the electron density and its spatial heterogeneity. The latter can be explained by a higher ratio of heterochromatin to euchromatin. Similarly, many other structural properties can be derived from the data, reflecting both the natural polydispersity of the hippocampal cytoarchitecture between different individuals in the physiological context and the structural effects associated with AD pathology.
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Romano M, Bravin A, Mittone A, Eckhardt A, Barbone GE, Sancey L, Dinkel J, Bartzsch S, Ricke J, Alunni-Fabbroni M, Hirner-Eppeneder H, Karpov D, Giannini C, Bunk O, Bouchet A, Ruf V, Giese A, Coan P. A Multi-Scale and Multi-Technique Approach for the Characterization of the Effects of Spatially Fractionated X-ray Radiation Therapies in a Preclinical Model. Cancers (Basel) 2021; 13:cancers13194953. [PMID: 34638437 PMCID: PMC8507698 DOI: 10.3390/cancers13194953] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/23/2021] [Accepted: 09/27/2021] [Indexed: 12/15/2022] Open
Abstract
The purpose of this study is to use a multi-technique approach to detect the effects of spatially fractionated X-ray Microbeam (MRT) and Minibeam Radiation Therapy (MB) and to compare them to seamless Broad Beam (BB) irradiation. Healthy- and Glioblastoma (GBM)-bearing male Fischer rats were irradiated in-vivo on the right brain hemisphere with MRT, MB and BB delivering three different doses for each irradiation geometry. Brains were analyzed post mortem by multi-scale X-ray Phase Contrast Imaging-Computed Tomography (XPCI-CT), histology, immunohistochemistry, X-ray Fluorescence (XRF), Small- and Wide-Angle X-ray Scattering (SAXS/WAXS). XPCI-CT discriminates with high sensitivity the effects of MRT, MB and BB irradiations on both healthy and GBM-bearing brains producing a first-time 3D visualization and morphological analysis of the radio-induced lesions, MRT and MB induced tissue ablations, the presence of hyperdense deposits within specific areas of the brain and tumor evolution or regression with respect to the evaluation made few days post-irradiation with an in-vivo magnetic resonance imaging session. Histology, immunohistochemistry, SAXS/WAXS and XRF allowed identification and classification of these deposits as hydroxyapatite crystals with the coexistence of Ca, P and Fe mineralization, and the multi-technique approach enabled the realization, for the first time, of the map of the differential radiosensitivity of the different brain areas treated with MRT and MB. 3D XPCI-CT datasets enabled also the quantification of tumor volumes and Ca/Fe deposits and their full-organ visualization. The multi-scale and multi-technique approach enabled a detailed visualization and classification in 3D of the radio-induced effects on brain tissues bringing new essential information towards the clinical implementation of the MRT and MB radiation therapy techniques.
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Affiliation(s)
- Mariele Romano
- Department of Medical Physics, Faculty of Physics, Ludwig-Maximilians-Universität, Am Coulombwall 1, München, 85748 Garching, Germany; (M.R.); (A.E.); (G.E.B.)
| | - Alberto Bravin
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38000 Grenoble, France; (A.B.); (A.M.); (D.K.)
- Department of Physics, Faculty of Physics, University of Milano-Bicocca, 20126 Milan, Italy
| | - Alberto Mittone
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38000 Grenoble, France; (A.B.); (A.M.); (D.K.)
- CELLS-ALBA Synchrotron, 08290 Cerdanyola del Valles, Spain
| | - Alicia Eckhardt
- Department of Medical Physics, Faculty of Physics, Ludwig-Maximilians-Universität, Am Coulombwall 1, München, 85748 Garching, Germany; (M.R.); (A.E.); (G.E.B.)
| | - Giacomo E. Barbone
- Department of Medical Physics, Faculty of Physics, Ludwig-Maximilians-Universität, Am Coulombwall 1, München, 85748 Garching, Germany; (M.R.); (A.E.); (G.E.B.)
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität, 81377 Munich, Germany; (J.D.); (J.R.); (M.A.-F.); (H.H.-E.)
| | - Lucie Sancey
- Centre de Recherche UGA/INSERM U1209/CNRS UMR5309, Institute for Advanced Biosciences, 38700 La Tronche, France;
| | - Julien Dinkel
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität, 81377 Munich, Germany; (J.D.); (J.R.); (M.A.-F.); (H.H.-E.)
| | - Stefan Bartzsch
- Department of Radiation Oncology, School of Medicine, Technical University of Munich, Klinikum Rechts der Isar, 81675 Munich, Germany;
- Department of Radiation Sciences (DRS), Institute of Radiation Medicine (IRM), Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Jens Ricke
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität, 81377 Munich, Germany; (J.D.); (J.R.); (M.A.-F.); (H.H.-E.)
| | - Marianna Alunni-Fabbroni
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität, 81377 Munich, Germany; (J.D.); (J.R.); (M.A.-F.); (H.H.-E.)
| | - Heidrun Hirner-Eppeneder
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität, 81377 Munich, Germany; (J.D.); (J.R.); (M.A.-F.); (H.H.-E.)
| | - Dmitry Karpov
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38000 Grenoble, France; (A.B.); (A.M.); (D.K.)
- Swiss Light Source, Paul Scherrer Institute, 5232 Villigen, Switzerland;
| | - Cinzia Giannini
- Institute of Crystallography, National Research Council, 70126 Bari, Italy;
| | - Oliver Bunk
- Swiss Light Source, Paul Scherrer Institute, 5232 Villigen, Switzerland;
| | - Audrey Bouchet
- Inserm U1296 Unit “Radiation: Defense, Health Environment”, 69008 Lyon, France;
| | - Viktoria Ruf
- Center for Neuropathology and Prion Research, Ludwig-Maximilians-Universität, 81377 Munich, Germany; (V.R.); (A.G.)
| | - Armin Giese
- Center for Neuropathology and Prion Research, Ludwig-Maximilians-Universität, 81377 Munich, Germany; (V.R.); (A.G.)
| | - Paola Coan
- Department of Medical Physics, Faculty of Physics, Ludwig-Maximilians-Universität, Am Coulombwall 1, München, 85748 Garching, Germany; (M.R.); (A.E.); (G.E.B.)
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität, 81377 Munich, Germany; (J.D.); (J.R.); (M.A.-F.); (H.H.-E.)
- Correspondence:
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Contrast enhanced X-ray computed tomography imaging of amyloid plaques in Alzheimer disease rat model on lab based micro CT system. Sci Rep 2021; 11:5999. [PMID: 33727592 PMCID: PMC7966753 DOI: 10.1038/s41598-021-84579-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 02/18/2021] [Indexed: 12/21/2022] Open
Abstract
Amyloid plaques are small (~ 50 μm), highly-dense aggregates of amyloid beta (Aβ) protein in brain tissue, supposed to play a key role in pathogenesis of Alzheimer’s disease (AD). Plaques´ in vivo detection, spatial distribution and quantitative characterization could be an essential marker in diagnostics and evaluation of AD progress. However, current imaging methods in clinics possess substantial limits in sensitivity towards Aβ plaques to play a considerable role in AD screening. Contrast enhanced X-ray micro computed tomography (micro CT) is an emerging highly sensitive imaging technique capable of high resolution visualization of rodent brain. In this study we show the absorption based contrast enhanced X-ray micro CT imaging is viable method for detection and 3D analysis of Aβ plaques in transgenic rodent models of Alzheimer’s disease. Using iodine contrasted brain tissue isolated from the Tg-F344-AD rat model we show the micro CT imaging is capable of precise imaging of Aβ plaques, making possible to further analyze various aspects of their 3D spatial distribution and other properties.
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10
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Notohamiprodjo S, Varasteh Z, Beer AJ, Niu G, Chen X(S, Weber W, Schwaiger M. Tumor Vasculature. Mol Imaging 2021. [DOI: 10.1016/b978-0-12-816386-3.00090-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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11
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Kastner DB, Kharazia V, Nevers R, Smyth C, Astudillo-Maya DA, Williams GM, Yang Z, Holobetz CM, Santina LD, Parkinson DY, Frank LM. Scalable method for micro-CT analysis enables large scale quantitative characterization of brain lesions and implants. Sci Rep 2020; 10:20851. [PMID: 33257721 PMCID: PMC7705725 DOI: 10.1038/s41598-020-77796-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 11/17/2020] [Indexed: 12/18/2022] Open
Abstract
Anatomic evaluation is an important aspect of many studies in neuroscience; however, it often lacks information about the three-dimensional structure of the brain. Micro-CT imaging provides an excellent, nondestructive, method for the evaluation of brain structure, but current applications to neurophysiological or lesion studies require removal of the skull as well as hazardous chemicals, dehydration, or embedding, limiting their scalability and utility. Here we present a protocol using eosin in combination with bone decalcification to enhance contrast in the tissue and then employ monochromatic and propagation phase-contrast micro-CT imaging to enable the imaging of brain structure with the preservation of the surrounding skull. Instead of relying on descriptive, time-consuming, or subjective methods, we develop simple quantitative analyses to map the locations of recording electrodes and to characterize the presence and extent of hippocampal brain lesions.
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Affiliation(s)
- David B Kastner
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, CA, 94143, USA. .,Kavli Institute for Fundamental Neuroscience and Department of Physiology, University of California, San Francisco, CA, 94158, USA.
| | - Viktor Kharazia
- Kavli Institute for Fundamental Neuroscience and Department of Physiology, University of California, San Francisco, CA, 94158, USA
| | - Rhino Nevers
- Kavli Institute for Fundamental Neuroscience and Department of Physiology, University of California, San Francisco, CA, 94158, USA
| | - Clay Smyth
- Kavli Institute for Fundamental Neuroscience and Department of Physiology, University of California, San Francisco, CA, 94158, USA
| | - Daniela A Astudillo-Maya
- Kavli Institute for Fundamental Neuroscience and Department of Physiology, University of California, San Francisco, CA, 94158, USA
| | - Greer M Williams
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, CA, 94143, USA
| | - Zhounan Yang
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, CA, 94143, USA
| | - Cristofer M Holobetz
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, CA, 94143, USA
| | - Luca Della Santina
- Deparment of Ophthalmology, University of California, San Francisco, CA, 94143, USA.,Bakar Computational Health Science Unit, University of California, San Francisco, CA, 94158, USA
| | - Dilworth Y Parkinson
- Advanced Light Source, Lawrence Berkeley National Labs, Berkeley, CA, 94720, USA
| | - Loren M Frank
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, CA, 94143, USA.,Kavli Institute for Fundamental Neuroscience and Department of Physiology, University of California, San Francisco, CA, 94158, USA.,Howard Hughes Medical Institute, Chevy Chase, MD, USA
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12
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Choi M, Dahal E, Badano A. Feasibility of imaging amyloid in the brain using small-angle x-ray scattering. Biomed Phys Eng Express 2020; 7. [PMID: 34037540 DOI: 10.1088/2057-1976/ab501c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 10/22/2019] [Indexed: 11/11/2022]
Abstract
Small-angle x-ray scattering (SAXS) imaging may have the potential to imageβ-amyloid plaquesin vivoin the brain without tracers for assessment of Alzheimer's disease (AD). We use a laboratory SAXS system for planar imaging of AD model and control mouse brains slices to detect regions with high density of amyloid plaques. These regions were validated with histology methods. Using Monte Carlo techniques, we simulate SAXS computed tomography (SAXS-CT) system to study the potential of selectively differentiating amyloid targets in mouse and human head phantoms with detailed anatomy. We found contrast between amyloid and brain tissue at smallq(below 0.8 nm-1) in the neocortex region of the transgenic brain slices as supported by histology. We observed similar behavior through planar SAXS imaging of an amyloid-like fibril deposit with a 0.8 mm diameter at a known location on a wild type mouse brain. In our SAXS-CT simulations, we found that 33-keV x rays provide increase plaque visibility in the mouse head for targets of at least 0.1 mm in diameter, while in the human head, 70-keV x rays were capable of detecting plaques as small as 2 mm. To increase radiation efficiency, we used a weighted-sum image visualization approach allowing the dose deposited by 70-keV x rays per SAXS-CT slice of the human head to be reduced by a factor of 10 to 71 mGy for gray matter and 63 mGy for white matter. The findings suggest that a dedicated SAXS-CT system forin vivoamyloid imaging in small animals and humans can be successfully developed with further system optimization to detect regions with amyloid plaques in the brain with a safe level of radiation dose.
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Affiliation(s)
- Mina Choi
- Center for Devices and Radiological Health, FDA, Silver Spring, MD, United States of America.,Fischell Department of Bioengineering, University of Maryland, College Park, MD, United States of America
| | - Eshan Dahal
- Center for Devices and Radiological Health, FDA, Silver Spring, MD, United States of America.,Fischell Department of Bioengineering, University of Maryland, College Park, MD, United States of America
| | - Aldo Badano
- Center for Devices and Radiological Health, FDA, Silver Spring, MD, United States of America.,Fischell Department of Bioengineering, University of Maryland, College Park, MD, United States of America
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13
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Enzlein T, Cordes J, Munteanu B, Michno W, Serneels L, De Strooper B, Hanrieder J, Wolf I, Chávez-Gutiérrez L, Hopf C. Computational Analysis of Alzheimer Amyloid Plaque Composition in 2D- and Elastically Reconstructed 3D-MALDI MS Images. Anal Chem 2020; 92:14484-14493. [PMID: 33138378 DOI: 10.1021/acs.analchem.0c02585] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
MALDI mass spectrometry imaging (MSI) enables label-free, spatially resolved analysis of a wide range of analytes in tissue sections. Quantitative analysis of MSI datasets is typically performed on single pixels or manually assigned regions of interest (ROIs). However, many sparse, small objects such as Alzheimer's disease (AD) brain deposits of amyloid peptides called plaques are neither single pixels nor ROIs. Here, we propose a new approach to facilitate the comparative computational evaluation of amyloid plaque-like objects by MSI: a fast PLAQUE PICKER tool that enables a statistical evaluation of heterogeneous amyloid peptide composition. Comparing two AD mouse models, APP NL-G-F and APP PS1, we identified distinct heterogeneous plaque populations in the NL-G-F model but only one class of plaques in the PS1 model. We propose quantitative metrics for the comparison of technical and biological MSI replicates. Furthermore, we reconstructed a high-accuracy 3D-model of amyloid plaques in a fully automated fashion, employing rigid and elastic MSI image registration using structured and plaque-unrelated reference ion images. Statistical single-plaque analysis in reconstructed 3D-MSI objects revealed the Aβ1-42Arc peptide to be located either in the core of larger plaques or in small plaques without colocalization of other Aβ isoforms. In 3D, a substantially larger number of small plaques were observed than that indicated by the 2D-MSI data, suggesting that quantitative analysis of molecularly diverse sparsely-distributed features may benefit from 3D-reconstruction. Data are available via ProteomeXchange with identifier PXD020824.
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Affiliation(s)
- Thomas Enzlein
- Center for Mass Spectrometry and Optical Spectroscopy (CeMOS), Mannheim University of Applied Sciences, Paul-Wittsack Str. 10, Mannheim 68163, Germany.,KU Leuven-VIB Center for Brain & Disease Research, VIB, Leuven 3000, Belgium.,Department of Neurosciences, Leuven Institute for Neuroscience and Disease, KU Leuven, Leuven 3000, Belgium
| | - Jonas Cordes
- Faculty of Computer Science, University of Applied Sciences Mannheim, Paul-Wittsack-Straße 10, Mannheim 68163, Germany
| | - Bogdan Munteanu
- Center for Mass Spectrometry and Optical Spectroscopy (CeMOS), Mannheim University of Applied Sciences, Paul-Wittsack Str. 10, Mannheim 68163, Germany
| | - Wojciech Michno
- Department of Psychiatry and Neurochemistry, Sahlgrenska Academy at the University of Gothenburg, Mölndal Hospital, House V3, Mölndal 43180, Sweden.,Department of Neuroscience, Physiology and Pharmacology, University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - Lutgarde Serneels
- KU Leuven-VIB Center for Brain & Disease Research, VIB, Leuven 3000, Belgium.,Department of Neurosciences, Leuven Institute for Neuroscience and Disease, KU Leuven, Leuven 3000, Belgium
| | - Bart De Strooper
- KU Leuven-VIB Center for Brain & Disease Research, VIB, Leuven 3000, Belgium.,Department of Neurosciences, Leuven Institute for Neuroscience and Disease, KU Leuven, Leuven 3000, Belgium.,UK Dementia Research Institute at UCL, University College London, London WC1E 6BT U.K
| | - Jörg Hanrieder
- Department of Psychiatry and Neurochemistry, Sahlgrenska Academy at the University of Gothenburg, Mölndal Hospital, House V3, Mölndal 43180, Sweden.,Department of Neurodegenerative Diseases, University College London Queen Square Institute of Neurology, Queen Square, London WC1N 3BG, United Kingdom
| | - Ivo Wolf
- Faculty of Computer Science, University of Applied Sciences Mannheim, Paul-Wittsack-Straße 10, Mannheim 68163, Germany
| | - Lucía Chávez-Gutiérrez
- KU Leuven-VIB Center for Brain & Disease Research, VIB, Leuven 3000, Belgium.,Department of Neurosciences, Leuven Institute for Neuroscience and Disease, KU Leuven, Leuven 3000, Belgium
| | - Carsten Hopf
- Center for Mass Spectrometry and Optical Spectroscopy (CeMOS), Mannheim University of Applied Sciences, Paul-Wittsack Str. 10, Mannheim 68163, Germany
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14
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Massimi L, Pieroni N, Maugeri L, Fratini M, Brun F, Bukreeva I, Santamaria G, Medici V, Poloni TE, Balducci C, Cedola A. Assessment of plaque morphology in Alzheimer's mouse cerebellum using three-dimensional X-ray phase-based virtual histology. Sci Rep 2020; 10:11233. [PMID: 32641715 PMCID: PMC7343834 DOI: 10.1038/s41598-020-68045-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 06/18/2020] [Indexed: 02/03/2023] Open
Abstract
Visualization and characterization of \documentclass[12pt]{minimal}
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\begin{document}$$\beta$$\end{document}β-amyloid deposits is a fundamental task in pre-clinical study of Alzheimer’s disease (AD) to assess its evolution and monitor the efficiency of new therapeutic strategies. While the cerebellum is one of the brain areas most underestimated in the context of AD, renewed interest in cerebellar lesions has recently arisen as they may link to motor and cognitive alterations. Thus, we quantitatively investigated three-dimensional plaque morphology in the cerebellum in APP/PS1 transgenic mouse, as a model of AD. In order to obtain a complete high-resolution three-dimensional view of the investigated tissue, we exploited synchrotron X-ray phase contrast tomography (XPCT), providing virtual slices with histology-matching resolution. We found the formation of plaques elongated in shape, and with a specific orientation in space depending on the investigated region of the cerebellar cortex. Remarkably, a similar shape is observed in human cerebellum from demented patients. Our findings demonstrate the capability of XPCT in volumetric quantification, supporting the current knowledge about plaque morphology in the cerebellum and the fundamental role of the surrounding tissue in driving their evolution. A good correlation with the human neuropathology is also reported.
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Affiliation(s)
- Lorenzo Massimi
- Department of Medical Physics and Biomedical Engineering, University College London, London, UK. .,Institute of Nanotechnology - CNR, Rome Unit, Rome, Italy.
| | - Nicola Pieroni
- Institute of Nanotechnology - CNR, Rome Unit, Rome, Italy.,Department of Anatomical Sciences, Histological, Legal Medical and Locomotor, University of Rome "Sapienza", Rome, Italy
| | - Laura Maugeri
- Institute of Nanotechnology - CNR, Rome Unit, Rome, Italy.,IRCCS Santa Lucia Foundation, Rome, Italy
| | - Michela Fratini
- Institute of Nanotechnology - CNR, Rome Unit, Rome, Italy.,Department of Engineering and Architecture, University of Trieste, Trieste, Italy
| | - Francesco Brun
- Institute of Nanotechnology - CNR, Rome Unit, Rome, Italy.,Department of Engineering and Architecture, University of Trieste, Trieste, Italy
| | - Inna Bukreeva
- Institute of Nanotechnology - CNR, Rome Unit, Rome, Italy
| | - Giulia Santamaria
- Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Valentina Medici
- Department of Neuropathology and Neurology, Golgi-Cenci Foundation, 20081, Abbiategrasso, Italy
| | - Tino Emanuele Poloni
- Department of Neuropathology and Neurology, Golgi-Cenci Foundation, 20081, Abbiategrasso, Italy
| | - Claudia Balducci
- Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Alessia Cedola
- Institute of Nanotechnology - CNR, Rome Unit, Rome, Italy
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15
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Barbone GE, Bravin A, Mittone A, Kraiger MJ, Hrabě de Angelis M, Bossi M, Ballarini E, Rodriguez-Menendez V, Ceresa C, Cavaletti G, Coan P. Establishing sample-preparation protocols for X-ray phase-contrast CT of rodent spinal cords: Aldehyde fixations and osmium impregnation. J Neurosci Methods 2020; 339:108744. [DOI: 10.1016/j.jneumeth.2020.108744] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/14/2020] [Accepted: 04/15/2020] [Indexed: 12/14/2022]
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16
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Correlative x-ray phase-contrast tomography and histology of human brain tissue affected by Alzheimer’s disease. Neuroimage 2020; 210:116523. [DOI: 10.1016/j.neuroimage.2020.116523] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 11/01/2019] [Accepted: 01/05/2020] [Indexed: 12/19/2022] Open
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17
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Advanced 3D Imaging of Uterine Leiomyoma's Morphology by Propagation-based Phase-Contrast Microtomography. Sci Rep 2019; 9:10580. [PMID: 31332223 PMCID: PMC6646365 DOI: 10.1038/s41598-019-47048-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 07/10/2019] [Indexed: 12/20/2022] Open
Abstract
Uterine leiomyoma is the most common benign smooth muscle tumor in women pelvis, originating from the myometrium. It is caused by a disorder of fibrosis, with a large production and disruption of extracellular matrix (ECM). Medical treatments are still very limited and no preventative therapies have been developed. We supposed that synchrotron-based phase-contrast microtomography (PhC-microCT) may be an appropriate tool to assess the 3D morphology of uterine leiomyoma, without the use of any contrast agent. We used this technique to perform the imaging and the quantitative morphometric analysis of healthy myometrium and pathologic leiomyomas. The quantitative morphometric analysis of collagen bundles was coupled to the Roschger approach. This method, previously only used to evaluate mineralized bone density distribution, was applied here to study the fibrosis mass density distribution in healthy and pathologic biopsies from two patients. This protocol was shown to be powerful in studying uterine leiomyomas, detecting also small signs of the ECM alteration. This is of paramount importance not only for the follow-up of the present study, i.e. the investigation of different compounds and their possible therapeutic benefits, but also because it offers new methodologic possibilities for future studies of the ECM in soft tissues of different body districts.
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18
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Pimentel RN, Navarro PA, Wang F, Robinson LG, Cammer M, Liang F, Kramer Y, Keefe DL. Amyloid-like substance in mice and human oocytes and embryos. J Assist Reprod Genet 2019; 36:1877-1890. [PMID: 31332596 DOI: 10.1007/s10815-019-01530-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 07/09/2019] [Indexed: 11/30/2022] Open
Abstract
PURPOSE To identify and characterize amyloid-like substance (ALS) in human and mouse oocytes and preimplantation embryos. METHODS An experimental prospective pilot study. A total of 252 mouse oocytes and preimplantation embryos and 50 immature and in vitro matured human oocytes and parthenogenetic human embryos, from 11 consenting fertility patients, ages 18-45. Fluorescence intensity from immunofluorescent staining and data from confocal microscopy were quantified. Data were compared by one-way analysis of variance, with the least square-MEANS post-test, Pearson correlation coefficients (r), and bivariate analyses (t tests). ALS morphology was verified using transmission electron microscopy. RESULTS Immunostaining for ALS appears throughout the zona pellucida, as well as in the cytoplasm and nucleus of mouse and human oocytes, polar bodies, and parthenogenetic embryos, and mouse preimplantation embryos. In mouse, 2-cell embryos exhibited the highest level of ALS (69000187.4 ± 6733098.07). Electron microscopy confirmed the presence of ALS. In humans, fresh germinal vesicle stage oocytes exhibited the highest level of ALS (4164.74088 ± 1573.46) followed by metaphase I and II stages (p = 0.008). There was a significant negative association between levels of ALS and patient body mass index, number of days of ovarian stimulation, dose of gonadotropin used, time between retrieval and fixation, and time after the hCG trigger. Significantly higher levels of ALS were found in patients with AMH between 1 and 3 ng/ml compared to < 1 ng/ml. CONCLUSION We demonstrate for the first time the presence, distribution, and change in ALS throughout some stages of mouse and human oocyte maturation and embryonic development. We also determine associations between ALS in human oocytes with clinical characteristics.
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Affiliation(s)
- Ricardo N Pimentel
- Research Scientist from the Department of Obstetrics and Gynecology, New York University School of Medicine, 550 First Avenue, NBV 9N1, New York, NY, USA.,Human Reproduction Division, Department of Obstetrics and Gynecology, Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Paula A Navarro
- Human Reproduction Division, Department of Obstetrics and Gynecology, Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Fang Wang
- Department of Obstetrics and Gynecology, Langone Medical Center, New York University, New York, NY, USA
| | - LeRoy G Robinson
- Department of Obstetrics and Gynecology, Langone Medical Center, New York University, New York, NY, USA
| | - Michael Cammer
- DART Microscopy Laboratory, New York University School of Medicine, New York, NY, USA
| | - Fengxia Liang
- DART Microscopy Laboratory, New York University School of Medicine, New York, NY, USA
| | - Yael Kramer
- Department of Obstetrics and Gynecology, Langone Medical Center, New York University, New York, NY, USA
| | - David Lawrence Keefe
- Department of Obstetrics and Gynecology, Langone Medical Center, New York University, New York, NY, USA.
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19
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Nguyen D, Uhlmann V, Planchette AL, Marchand PJ, Van De Ville D, Lasser T, Radenovic A. Supervised learning to quantify amyloidosis in whole brains of an Alzheimer's disease mouse model acquired with optical projection tomography. BIOMEDICAL OPTICS EXPRESS 2019; 10:3041-3060. [PMID: 31259073 PMCID: PMC6583328 DOI: 10.1364/boe.10.003041] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 05/19/2019] [Accepted: 05/19/2019] [Indexed: 05/14/2023]
Abstract
Alzheimer's disease (AD) is characterized by amyloidosis of brain tissues. This phenomenon is studied with genetically-modified mouse models. We propose a method to quantify amyloidosis in whole 5xFAD mouse brains, a model of AD. We use optical projection tomography (OPT) and a random forest voxel classifier to segment and measure amyloid plaques. We validate our method in a preliminary cross-sectional study, where we measure 6136 ± 1637, 8477 ± 3438, and 17267 ± 4241 plaques (AVG ± SD) at 11, 17, and 31 weeks. Overall, this method can be used in the evaluation of new treatments against AD.
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Affiliation(s)
- David Nguyen
- Laboratory of Nanoscale Biology, École Polytechnique Fédérale de Lausanne, Lausanne, Vaud,
Switzerland
- Medical Image Processing Lab, École Polytechnique Fédérale de Lausanne, Genève, Genève,
Switzerland
- Laboratoire d’Optique Biomédicale, École Polytechnique Fédérale de Lausanne, Lausanne, Vaud,
Switzerland
| | - Virginie Uhlmann
- Biomedical Imaging Group, École Polytechnique Fédérale de Lausanne, Lausanne, Vaud,
Switzerland
- European Bioinformatics Institute, EMBL-EBI, Cambridge,
United Kingdom
| | - Arielle L. Planchette
- Laboratory of Nanoscale Biology, École Polytechnique Fédérale de Lausanne, Lausanne, Vaud,
Switzerland
- Laboratoire d’Optique Biomédicale, École Polytechnique Fédérale de Lausanne, Lausanne, Vaud,
Switzerland
| | - Paul J. Marchand
- Laboratoire d’Optique Biomédicale, École Polytechnique Fédérale de Lausanne, Lausanne, Vaud,
Switzerland
| | - Dimitri Van De Ville
- Medical Image Processing Lab, École Polytechnique Fédérale de Lausanne, Genève, Genève,
Switzerland
- Department of Radiology and Medical Informatics, University of Geneva, Genève, Genève,
Switzerland
| | - Theo Lasser
- Laboratoire d’Optique Biomédicale, École Polytechnique Fédérale de Lausanne, Lausanne, Vaud,
Switzerland
| | - Aleksandra Radenovic
- Laboratory of Nanoscale Biology, École Polytechnique Fédérale de Lausanne, Lausanne, Vaud,
Switzerland
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20
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Cao Y, Zhang M, Ding H, Chen Z, Tang B, Wu T, Xiao B, Duan C, Ni S, Jiang L, Luo Z, Li C, Zhao J, Liao S, Yin X, Fu Y, Xiao T, Lu H, Hu J. Synchrotron radiation micro-tomography for high-resolution neurovascular network morphology investigation. JOURNAL OF SYNCHROTRON RADIATION 2019; 26:607-618. [PMID: 31074423 DOI: 10.1107/s1600577519003060] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 02/27/2019] [Indexed: 06/09/2023]
Abstract
There has been increasing interest in using high-resolution micro-tomography to investigate the morphology of neurovascular networks in the central nervous system, which remain difficult to characterize due to their microscopic size as well as their delicate and complex 3D structure. Synchrotron radiation X-ray imaging, which has emerged as a cutting-edge imaging technology with a high spatial resolution, provides a novel platform for the non-destructive imaging of microvasculature networks at a sub-micrometre scale. When coupled with computed tomography, this technique allows the characterization of the 3D morphology of vasculature. The current review focuses on recent progress in developing synchrotron radiation methodology and its application in probing neurovascular networks, especially the pathological changes associated with vascular abnormalities in various model systems. Furthermore, this tool represents a powerful imaging modality that improves our understanding of the complex biological interactions between vascular function and neuronal activity in both physiological and pathological states.
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Affiliation(s)
- Yong Cao
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Mengqi Zhang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Hui Ding
- Department of Neurology, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Zhuohui Chen
- Department of Neurology, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Bin Tang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Tianding Wu
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Bo Xiao
- Department of Neurology, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Chunyue Duan
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Shuangfei Ni
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Liyuan Jiang
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Zixiang Luo
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Chengjun Li
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Jinyun Zhao
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
| | - Shenghui Liao
- School of Information Science and Engineering, Central South University, Changsha 410008, People's Republic of China
| | - Xianzhen Yin
- Center for Drug Delivery System, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 20203, People's Republic of China
| | - Yalan Fu
- Shanghai Synchrotron Radiation Facility/Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 21204, People's Republic of China
| | - Tiqiao Xiao
- Shanghai Synchrotron Radiation Facility/Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 21204, People's Republic of China
| | - Hongbin Lu
- Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha, Hunan 410008, People's Republic of China
| | - Jianzhong Hu
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha 410008, People's Republic of China
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21
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Wang Z, Ren K, Shi X, Liu D, Wu Z, Gao K. Technical Note: Single-shot phase retrieval method for synchrotron-based high-energy x-ray grating interferometry. Med Phys 2019; 46:1317-1322. [DOI: 10.1002/mp.13399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 11/20/2018] [Accepted: 01/18/2019] [Indexed: 01/31/2023] Open
Affiliation(s)
- Zhili Wang
- School of Electronic Science & Applied Physics; Hefei University of Technology; Hefei 230009 China
- Beijing Advanced Innovation Center for Imaging Technology; Capital Normal University; Beijing 100048 People's Republic of China
| | - Kun Ren
- School of Electronic Science & Applied Physics; Hefei University of Technology; Hefei 230009 China
| | - Xiaomin Shi
- School of Electronic Science & Applied Physics; Hefei University of Technology; Hefei 230009 China
| | - Dalin Liu
- School of Electronic Science & Applied Physics; Hefei University of Technology; Hefei 230009 China
| | - Zhao Wu
- National Synchrotron Radiation Laboratory University of Science and Technology of China; 230029 Hefei China
| | - Kun Gao
- National Synchrotron Radiation Laboratory University of Science and Technology of China; 230029 Hefei China
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22
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Albers J, Pacilé S, Markus MA, Wiart M, Vande Velde G, Tromba G, Dullin C. X-ray-Based 3D Virtual Histology-Adding the Next Dimension to Histological Analysis. Mol Imaging Biol 2019; 20:732-741. [PMID: 29968183 DOI: 10.1007/s11307-018-1246-3] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Histology and immunohistochemistry of thin tissue sections have been the standard diagnostic procedure in many diseases for decades. This method is highly specific for particular tissue regions or cells, but mechanical sectioning of the specimens is required, which destroys the sample in the process and can lead to non-uniform tissue deformations. In addition, regions of interest cannot be located beforehand and the analysis is intrinsically two-dimensional. Micro X-ray computed tomography (μCT) on the other hand can provide 3D images at high resolution and allows for quantification of tissue structures, as well as the localization of small regions of interest. These advantages advocate the use of μCT for virtual histology tool with or without subsequent classical histology. This review summarizes the most recent examples of virtual histology and provides currently known possibilities of improving contrast and resolution of μCT. Following a background in μCT imaging, ex vivo staining procedures for contrast enhancement are presented as well as label-free virtual histology approaches and the technologies, which could rapidly advance it, such as phase-contrast CT. Novel approaches such as zoom tomography and nanoparticulate contrast agents will also be considered. The current evidence suggests that virtual histology may present a valuable addition to the workflow of histological analysis, potentially reducing the workload in pathology, refining tissue classification, and supporting the detection of small malignancies.
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Affiliation(s)
- J Albers
- Institute for Diagnostic and Interventional Radiology, University Medical Center Göttingen, Göttingen, Germany
| | - S Pacilé
- Department of Engineering and Architecture, University of Trieste, Trieste, Italy.,Elettra Sincrotrone Trieste, Trieste, Italy
| | - M A Markus
- Translational Molecular Imaging, Max-Planck-Institute for Experimental Medicine, Göttingen, Germany
| | - M Wiart
- Univ Lyon, CarMeN Laboratory, INSERM, INRA, INSA Lyon, Université Claude Bernard Lyon 1, 69500, Bron, France
| | - G Vande Velde
- Department of Imaging and Pathology, Faculty of Medicine, KU Leuven-University of Leuven, Leuven, Belgium
| | - G Tromba
- Elettra Sincrotrone Trieste, Trieste, Italy
| | - C Dullin
- Institute for Diagnostic and Interventional Radiology, University Medical Center Göttingen, Göttingen, Germany. .,Elettra Sincrotrone Trieste, Trieste, Italy. .,Translational Molecular Imaging, Max-Planck-Institute for Experimental Medicine, Göttingen, Germany.
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23
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Massimi L, Bukreeva I, Santamaria G, Fratini M, Corbelli A, Brun F, Fumagalli S, Maugeri L, Pacureanu A, Cloetens P, Pieroni N, Fiordaliso F, Forloni G, Uccelli A, Kerlero de Rosbo N, Balducci C, Cedola A. Exploring Alzheimer's disease mouse brain through X-ray phase contrast tomography: From the cell to the organ. Neuroimage 2018; 184:490-495. [PMID: 30240904 DOI: 10.1016/j.neuroimage.2018.09.044] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 09/09/2018] [Accepted: 09/17/2018] [Indexed: 12/14/2022] Open
Abstract
Alzheimer's disease (AD), the most common form of dementia, is a progressive neurodegenerative disorder associated with aberrant production of beta-amyloid (Aβ) peptide depositing in brain as amyloid plaques. While animal models allow investigation of disease progression and therapeutic efficacy, technology to fully dissect the pathological mechanisms of this complex disease at cellular and vascular levels is lacking. X-ray phase contrast tomography (XPCT) is an advanced non-destructive 3D multi-scale direct imaging from the cell through to the whole brain, with exceptional spatial and contrast resolution. We exploit XPCT to simultaneously analyse disease-relevant vascular and neuronal networks in AD mouse brain, without sectioning and staining. The findings clearly show the different typologies and internal structures of Aβ plaques, together with their interaction with patho/physiological cellular and neuro-vascular microenvironment. XPCT enables for the first time a detailed visualization of amyloid-angiopathy at capillary level, which is impossible to achieve with other approaches. XPCT emerges as added-value technology to explore AD mouse brain as a whole, preserving tissue chemistry and structure, enabling the comparison of physiological vs. pathological states at the level of crucial disease targets. In-vivo translation will permit to monitor emerging therapeutic approaches and possibly shed new light on pathological mechanisms of neurodegenerative diseases.
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Affiliation(s)
- Lorenzo Massimi
- Istituto di Nanotecnologia, Consiglio Nazionale delle Ricerche, Rome, Italy
| | - Inna Bukreeva
- Istituto di Nanotecnologia, Consiglio Nazionale delle Ricerche, Rome, Italy; Dipartimento di Fisica, Università Sapienza, Rome, Italy
| | | | - Michela Fratini
- Istituto di Nanotecnologia, Consiglio Nazionale delle Ricerche, Rome, Italy; IRCCS Fondazione Santa Lucia, Rome, Italy
| | | | - Francesco Brun
- Istituto di Nanotecnologia, Consiglio Nazionale delle Ricerche, Rome, Italy
| | | | - Laura Maugeri
- Istituto di Nanotecnologia, Consiglio Nazionale delle Ricerche, Rome, Italy; IRCCS Fondazione Santa Lucia, Rome, Italy
| | | | - Peter Cloetens
- European Synchrotron Radiation Facility, Grenoble, France
| | - Nicola Pieroni
- Istituto di Nanotecnologia, Consiglio Nazionale delle Ricerche, Rome, Italy
| | - Fabio Fiordaliso
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | | | - Antonio Uccelli
- DINOGMI, Università degli Studi di Genova, Genoa, Italy; Ospedale Policlinico San Martino, Genoa, Italy
| | | | - Claudia Balducci
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy.
| | - Alessia Cedola
- Istituto di Nanotecnologia, Consiglio Nazionale delle Ricerche, Rome, Italy; Dipartimento di Fisica, Università Sapienza, Rome, Italy.
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24
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Croton LCP, Morgan KS, Paganin DM, Kerr LT, Wallace MJ, Crossley KJ, Miller SL, Yagi N, Uesugi K, Hooper SB, Kitchen MJ. In situ phase contrast X-ray brain CT. Sci Rep 2018; 8:11412. [PMID: 30061729 PMCID: PMC6065359 DOI: 10.1038/s41598-018-29841-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 07/17/2018] [Indexed: 11/09/2022] Open
Abstract
Phase contrast X-ray imaging (PCXI) is an emerging imaging modality that has the potential to greatly improve radiography for medical imaging and materials analysis. PCXI makes it possible to visualise soft-tissue structures that are otherwise unresolved with conventional CT by rendering phase gradients in the X-ray wavefield visible. This can improve the contrast resolution of soft tissues structures, like the lungs and brain, by orders of magnitude. Phase retrieval suppresses noise, revealing weakly-attenuating soft tissue structures, however it does not remove the artefacts from the highly attenuating bone of the skull and from imperfections in the imaging system that can obscure those structures. The primary causes of these artefacts are investigated and a simple method to visualise the features they obstruct is proposed, which can easily be implemented for preclinical animal studies. We show that phase contrast X-ray CT (PCXI-CT) can resolve the soft tissues of the brain in situ without a need for contrast agents at a dose ~400 times lower than would be required by standard absorption contrast CT. We generalise a well-known phase retrieval algorithm for multiple-material samples specifically for CT, validate its use for brain CT, and demonstrate its high stability in the presence of noise.
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Affiliation(s)
- Linda C P Croton
- School of Physics and Astronomy, Monash University, Clayton, Victoria, 3800, Australia.
| | - Kaye S Morgan
- School of Physics and Astronomy, Monash University, Clayton, Victoria, 3800, Australia.,Chair of Biomedical Physics, Department of Physics, Munich School of Bioengineering, and Institute of Advanced Study, Technische Universität München, 85748, Garching, Germany
| | - David M Paganin
- School of Physics and Astronomy, Monash University, Clayton, Victoria, 3800, Australia
| | - Lauren T Kerr
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, Victoria, 3800, Australia.,Cancer Research UK, Angel, London, United Kingdom
| | - Megan J Wallace
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, Victoria, 3800, Australia.,Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, 3800, Australia
| | - Kelly J Crossley
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, Victoria, 3800, Australia.,Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, 3800, Australia
| | - Suzanne L Miller
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, Victoria, 3800, Australia
| | - Naoto Yagi
- 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
| | - Stuart B Hooper
- The Ritchie Centre, Hudson Institute of Medical Research, Clayton, Victoria, 3800, Australia.,Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, 3800, Australia
| | - Marcus J Kitchen
- School of Physics and Astronomy, Monash University, Clayton, Victoria, 3800, Australia
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25
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Morphometric Analysis of Rat Spinal Cord Angioarchitecture by Phase Contrast Radiography: From 2D to 3D Visualization. Spine (Phila Pa 1976) 2018; 43:E504-E511. [PMID: 28885295 DOI: 10.1097/brs.0000000000002408] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN An advanced imaging of vasculature with synchrotron radiation X-ray in a rat model. OBJECTIVE To develop the potential for quantitative assessment of vessel network from two-dimensional (2D) to 3D visualization by synchrotron radiation X-ray phase contrast tomography (XPCT) in rat spinal cord model. SUMMARY OF BACKGROUND DATA Investigation of microvasculature contributes to the understanding of pathological development of spinal cord injury. A few of X-ray imaging is available to visualize vascular architecture without usage of angiography or invasive casting preparation. METHODS A rat spinal cord injury model was produced by modified Allen method. Histomorphometric detection was simultaneously analyzed by both histology and XPCT from 2D to 3D visualization. The parameters including tissue lesion area, microvessel density, vessel diameter, and frequency distribution of vessel diameter were evaluated. RESULTS XPCT rendered the microvessels as small as capillary scale with a pixel size of 3.7 μm. It presented a high linear concordance for characterizing the 2D vascular morphometry compared with the histological staining (r = 0.8438). In the presence of spinal cord injury model, 3D construction quantified the significant angioarchitectural deficiency in the injury epicenter of cord lesion (P<0.01). CONCLUSION XPCT has a great potential to detect the smallest vascular network with pixel size up to micron dimension. It is inferred that the loss of abundant microvessels (≤40 μm) is responsible for local ischemia and neural dysfunction. XPCT holds a promise for morphometric analysis from 2D to 3D imaging in experimental model of neurovascular disorders. LEVEL OF EVIDENCE N/A.
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26
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Giuliani A, Mazzoni S, Mele L, Liccardo D, Tromba G, Langer M. Synchrotron Phase Tomography: An Emerging Imaging Method for Microvessel Detection in Engineered Bone of Craniofacial Districts. Front Physiol 2017; 8:769. [PMID: 29085301 PMCID: PMC5649129 DOI: 10.3389/fphys.2017.00769] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 09/20/2017] [Indexed: 01/12/2023] Open
Abstract
The engineering of large 3D constructs, such as certain craniofacial bone districts, is nowadays a critical challenge. Indeed, the amount of oxygen needed for cell survival is able to reach a maximum diffusion distance of ~150–200 μm from the original vascularization vector, often hampering the long-term survival of the regenerated tissues. Thus, the rapid growth of new blood vessels, delivering oxygen and nutrients also to the inner cells of the bone grafts, is mandatory for their long-term function in clinical practice. Unfortunately, significant progress in this direction is currently hindered by a lack of methods with which to visualize these processes in 3D and reliably quantify them. In this regard, a challenging method for simultaneous 3D imaging and analysis of microvascularization and bone microstructure has emerged in recent years: it is based on the use of synchrotron phase tomography. This technique is able to simultaneously identify multiple tissue features in a craniofacial bone site (e.g., the microvascular and the calcified tissue structure). Moreover, it overcomes the intrinsic limitations of both histology, achieving only a 2D characterization, and conventional tomographic approaches, poorly resolving the vascularization net in the case of an incomplete filling of the newly formed microvessels by contrast agents. Indeed, phase tomography, being based on phase differences among the scattered X-ray waves, is capable of discriminating tissues with similar absorption coefficients (like vessels and woven bone) in defined experimental conditions. The approach reviewed here is based on the most recent experiences applied to bone regeneration in the craniofacial region.
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Affiliation(s)
- Alessandra Giuliani
- Sezione di Biochimica, Biologia e Fisica Applicata, Dipartimento di Scienze Cliniche Specialistiche e Odontostomatologiche, Università Politecnica delle Marche, Ancona, Italy
| | - Serena Mazzoni
- Sezione di Biochimica, Biologia e Fisica Applicata, Dipartimento di Scienze Cliniche Specialistiche e Odontostomatologiche, Università Politecnica delle Marche, Ancona, Italy
| | - Luigi Mele
- Sezione di Biotecnologie, Istologia Medica e Biologia Molecolare, Dipartimento di Medicina Sperimentale, Università degli Studi della Campania "L. Vanvitelli", Naples, Italy
| | - Davide Liccardo
- Sezione di Biotecnologie, Istologia Medica e Biologia Molecolare, Dipartimento di Medicina Sperimentale, Università degli Studi della Campania "L. Vanvitelli", Naples, Italy
| | | | - Max Langer
- Centre de Recherche en Acquisition et Traitment d'Images pour la Santé (CREATIS), Centre National de la Recherche Scientifique (CNRS) UMR 5220, Institut national de la santé et de la recherche médicale (Inserm) U1206, Université de Lyon, INSA-Lyon, Villeurbanne, France
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27
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Bukreeva I, Campi G, Fratini M, Spanò R, Bucci D, Battaglia G, Giove F, Bravin A, Uccelli A, Venturi C, Mastrogiacomo M, Cedola A. Quantitative 3D investigation of Neuronal network in mouse spinal cord model. Sci Rep 2017; 7:41054. [PMID: 28112212 PMCID: PMC5253662 DOI: 10.1038/srep41054] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 12/16/2016] [Indexed: 12/04/2022] Open
Abstract
The investigation of the neuronal network in mouse spinal cord models represents the basis for the research on neurodegenerative diseases. In this framework, the quantitative analysis of the single elements in different districts is a crucial task. However, conventional 3D imaging techniques do not have enough spatial resolution and contrast to allow for a quantitative investigation of the neuronal network. Exploiting the high coherence and the high flux of synchrotron sources, X-ray Phase-Contrast multiscale-Tomography allows for the 3D investigation of the neuronal microanatomy without any aggressive sample preparation or sectioning. We investigated healthy-mouse neuronal architecture by imaging the 3D distribution of the neuronal-network with a spatial resolution of 640 nm. The high quality of the obtained images enables a quantitative study of the neuronal structure on a subject-by-subject basis. We developed and applied a spatial statistical analysis on the motor neurons to obtain quantitative information on their 3D arrangement in the healthy-mice spinal cord. Then, we compared the obtained results with a mouse model of multiple sclerosis. Our approach paves the way to the creation of a "database" for the characterization of the neuronal network main features for a comparative investigation of neurodegenerative diseases and therapies.
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Affiliation(s)
- I. Bukreeva
- Institute of Nanotechnology-CNR c/o Physics Department at ‘Sapienza’ University, Piazzale Aldo Moro 2, 00185 Rome, Italy
| | - G. Campi
- Institute of Crystallography-CNR, 00015 Monterotondo, Rome, Italy
| | - M. Fratini
- Institute of Nanotechnology-CNR c/o Physics Department at ‘Sapienza’ University, Piazzale Aldo Moro 2, 00185 Rome, Italy
- Fondazione Santa Lucia I.R.C.C.S., Via Ardeatina 306, 00179 Roma, Italy
| | - R. Spanò
- Department of Experimental Medicine, University of Genova & AUO San Martino - IST Istituto Nazionale per la Ricerca sul Cancro, Largo R. Benzi 10, 16132 Genova, Italy
| | - D. Bucci
- I.R.C.C.S. Neuromed, Località Camerelle, 86077 Pozzilli, Italy
| | - G. Battaglia
- I.R.C.C.S. Neuromed, Località Camerelle, 86077 Pozzilli, Italy
| | - F. Giove
- Fondazione Santa Lucia I.R.C.C.S., Via Ardeatina 306, 00179 Roma, Italy
- Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Piazza del Viminale 1, 00184 Roma, Italy
| | - A. Bravin
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38043 Grenoble, Cedex France
| | - A. Uccelli
- University of Genova DINOGMI Largo Daneo, 3 IT-16132 Genova, Italy
- IRCCS Azienda Ospedaliera Universitaria San Martino – IST, Genoa, Italy
| | - C. Venturi
- University of Genova DINOGMI Largo Daneo, 3 IT-16132 Genova, Italy
| | - M. Mastrogiacomo
- Department of Experimental Medicine, University of Genova & AUO San Martino - IST Istituto Nazionale per la Ricerca sul Cancro, Largo R. Benzi 10, 16132 Genova, Italy
| | - A. Cedola
- Institute of Nanotechnology-CNR c/o Physics Department at ‘Sapienza’ University, Piazzale Aldo Moro 2, 00185 Rome, Italy
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28
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Cao Y, Zhou Y, Ni S, Wu T, Li P, Liao S, Hu J, Lu H. Three Dimensional Quantification of Microarchitecture and Vessel Regeneration by Synchrotron Radiation Microcomputed Tomography in a Rat Model of Spinal Cord Injury. J Neurotrauma 2016; 34:1187-1199. [PMID: 27676128 DOI: 10.1089/neu.2016.4697] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
A full understanding of the mechanisms behind spinal cord injury (SCI) processes requires reliable three-dimensional (3D) imaging tools for a thorough analysis of changes in angiospatial architecture. We aimed to use synchrotron radiation μCT (SRμCT) to characterize 3D temporal-spatial changes in microvasculature post-SCI. Morphometrical measurements revealed a significant decrease in vascular volume fraction, vascular bifurcation density, vascular segment density, and vascular connectivity density 1 day post-injury, followed by a gradual increase at 3, 7, and 14 days. At 1 day post-injury, SRμCT revealed an increase in vascular tortuosity (VT), which reached a plateau after 7 days and decreased slightly during the healing process. In addition, SRμCT images showed that vessels were largely concentrated in the gray matter 1 day post-injury. The maximal endothelial cell proliferation rate was detected at 7 days post-injury. The 3D morphology of the cavity appears in the spinal cord at 28 days post-injury. We describe a methodology for 3D analysis of vascular repair in SCI and reveal that endogenous revascularization occurs during the healing process. The spinal cord microvasculature configuration undergoes 3D remodeling and modification during the post-injury repair process. Examination of these processes might contribute to a full understanding of the compensatory vascular mechanisms after injury and aid in the development of novel and effective treatment for SCI.
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Affiliation(s)
- Yong Cao
- 1 Department of Spine Surgery, Central South University , Changsha, China
| | - Yuan Zhou
- 2 Department of Thoracic Surgery, Xiangya Hospital, Central South University , Changsha, China
| | - Shuangfei Ni
- 1 Department of Spine Surgery, Central South University , Changsha, China
| | - Tianding Wu
- 1 Department of Spine Surgery, Central South University , Changsha, China
| | - Ping Li
- 1 Department of Spine Surgery, Central South University , Changsha, China
| | - Shenghui Liao
- 3 School of Information Science and Engineering, Central South University , Changsha, Changsha, China
| | - Jianzhong Hu
- 1 Department of Spine Surgery, Central South University , Changsha, China
| | - Hongbin Lu
- 4 Department of Sports Medicine, Research Centre of Sports Medicine, Xiangya Hospital, Central South University , Changsha, China
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29
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Astolfo A, Lathuilière A, Laversenne V, Schneider B, Stampanoni M. Amyloid-β plaque deposition measured using propagation-based X-ray phase contrast CT imaging. JOURNAL OF SYNCHROTRON RADIATION 2016; 23:813-9. [PMID: 27140162 PMCID: PMC5315008 DOI: 10.1107/s1600577516004045] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 03/10/2016] [Indexed: 05/28/2023]
Abstract
Amyloid beta accumulation into insoluble plaques (Aβp) is known to play a significant role in the pathological process in Alzheimer's disease (AD). The presence of Aβp is also one of the neuropathological hallmarks for the disease. AD final diagnosis is generally acknowledged after the evaluation of Aβp deposition in the brain. Insoluble Aβp accumulation may also concur to cause AD as postulated in the so-called amyloid hypothesis. Therefore, the visualization, evaluation and quantification of Aβp are nowadays the keys for a better understanding of the disease, which may point to a possible cure for AD in the near future. Synchrotron-based X-ray phase contrast (XPC) has been demonstrated as the only imaging method that can retrieve the Aβp signal with high spatial resolution (up to 10 µm), high sensitivity and three-dimensional information at the same time. Although at the moment XPC is suitable for ex vivo samples only, it may develop into an alternative to positron emission tomography and magnetic resonance imaging in Aβp imaging. In this contribution the possibility of using synchrotron-based X-ray phase propagation computed tomography to visualize and measure Aβp on mouse brains is presented. A careful setup optimization for this application leads to a significant improvement of spatial resolution (∼1 µm), data acquisition speed (five times faster), X-ray dose (five times lower) and setup complexity, without a substantial loss in sensitivity when compared with the classic implementation of grating-based X-ray interferometry.
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Affiliation(s)
- Alberto Astolfo
- TOMCAT Beamline, Swiss Light Source, Paul Scherrer Institute, Villigen, Switzerland
| | - Aurélien Lathuilière
- Neurodegenerative Studies Laboratory, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
| | - Vanessa Laversenne
- Neurodegenerative Studies Laboratory, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
| | - Bernard Schneider
- Neurodegenerative Studies Laboratory, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
| | - Marco Stampanoni
- TOMCAT Beamline, Swiss Light Source, Paul Scherrer Institute, Villigen, Switzerland
- Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland
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30
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Lathuilière A, Laversenne V, Astolfo A, Kopetzki E, Jacobsen H, Stampanoni M, Bohrmann B, Schneider BL, Aebischer P. A subcutaneous cellular implant for passive immunization against amyloid-β reduces brain amyloid and tau pathologies. Brain 2016; 139:1587-604. [DOI: 10.1093/brain/aww036] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 01/19/2016] [Indexed: 01/17/2023] Open
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31
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Ren Y, Wang Y, Zhou G, He Y, Xie H, Du G, Deng B, Lin X, Yang GY, Xiao T. X-ray propagation-based equally sloped tomography for mouse brain. JOURNAL OF X-RAY SCIENCE AND TECHNOLOGY 2016; 24:79-86. [PMID: 26890902 DOI: 10.3233/xst-160533] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
BACKGROUND The outstanding functional importance of the brain implies a strong need for brain imaging modalities. However, the current imaging approaches that target the brain in rodents remain suboptimal. OBJECTIVE AND METHODS In this paper, X-ray propagation-based phase contrast imaging combined with equally sloped tomography (PPCI-EST) was employed to nondestructively investigate the mouse brain. RESULTS The grey and white matters, which have extremely small differences in electron density, were clearly discriminated. The fine structures, including the corpus callosum (cc), the optic chiasma (ox) and the caudate putamen (CPu), were revealed. Compared to the filtered back projection reconstruction, the PPCI-EST significantly reduce projection number while maintaining sufficient image quality. CONCLUSIONS It could be a potential tool for fast and low-dose phase-contrast imaging to biomedical specimens.
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Affiliation(s)
- Yuqi Ren
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
| | - Yudan Wang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
| | - Guangzhao Zhou
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
| | - You He
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
| | - Honglan Xie
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Guohao Du
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
| | - Biao Deng
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xiaojie Lin
- Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Guo-Yuan Yang
- Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Tiqiao Xiao
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Sciences, Beijing, China
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32
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Hagen CK, Maghsoudlou P, Totonelli G, Diemoz PC, Endrizzi M, Rigon L, Menk RH, Arfelli F, Dreossi D, Brun E, Coan P, Bravin A, De Coppi P, Olivo A. High contrast microstructural visualization of natural acellular matrices by means of phase-based x-ray tomography. Sci Rep 2015; 5:18156. [PMID: 26657471 PMCID: PMC4677348 DOI: 10.1038/srep18156] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 11/13/2015] [Indexed: 11/09/2022] Open
Abstract
Acellular scaffolds obtained via decellularization are a key instrument in regenerative medicine both per se and to drive the development of future-generation synthetic scaffolds that could become available off-the-shelf. In this framework, imaging is key to the understanding of the scaffolds’ internal structure as well as their interaction with cells and other organs, including ideally post-implantation. Scaffolds of a wide range of intricate organs (esophagus, lung, liver and small intestine) were imaged with x-ray phase contrast computed tomography (PC-CT). Image quality was sufficiently high to visualize scaffold microarchitecture and to detect major anatomical features, such as the esophageal mucosal-submucosal separation, pulmonary alveoli and intestinal villi. These results are a long-sought step for the field of regenerative medicine; until now, histology and scanning electron microscopy have been the gold standard to study the scaffold structure. However, they are both destructive: hence, they are not suitable for imaging scaffolds prior to transplantation, and have no prospect for post-transplantation use. PC-CT, on the other hand, is non-destructive, 3D and fully quantitative. Importantly, not only do we demonstrate achievement of high image quality at two different synchrotron facilities, but also with commercial x-ray equipment, which makes the method available to any research laboratory.
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Affiliation(s)
- Charlotte K Hagen
- University College London, Department of Medical Physics and Biomedical Engineering, London, WC1E 6BT, United Kingdom
| | | | - Giorgia Totonelli
- University College London, Institute of Child Health, London, WC1N 1EH, United Kingdom
| | - Paul C Diemoz
- University College London, Department of Medical Physics and Biomedical Engineering, London, WC1E 6BT, United Kingdom
| | - Marco Endrizzi
- University College London, Department of Medical Physics and Biomedical Engineering, London, WC1E 6BT, United Kingdom
| | - Luigi Rigon
- University of Trieste, Department of Physics, Trieste, 34127, Italy.,Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, Trieste, 34127, Italy
| | | | - Fulvia Arfelli
- University of Trieste, Department of Physics, Trieste, 34127, Italy
| | - Diego Dreossi
- Sincrotrone Trieste SCpA, Basovizza/Trieste, 34012, Italy
| | - Emmanuel Brun
- European Synchrotron Radiation Facility, Grenoble, 38043, France
| | - Paola Coan
- Ludwig Maximilians University, Department of Physics, Garching, 85748, Germany.,Ludwig Maximilians University, Faculty of Medicine, Grosshadern-Munich, 81377, Germany
| | - Alberto Bravin
- European Synchrotron Radiation Facility, Grenoble, 38043, France
| | - Paolo De Coppi
- University College London, Institute of Child Health, London, WC1N 1EH, United Kingdom
| | - Alessandro Olivo
- University College London, Department of Medical Physics and Biomedical Engineering, London, WC1E 6BT, United Kingdom
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Winklhofer S, Peter S, Tischler V, Morsbach F, von Werdt M, Berens S, Modregger P, Buser L, Moch H, Stampanoni M, Thali M, Alkadhi H, Stolzmann P. Diagnostic Accuracy of Quantitative and Qualitative Phase-Contrast Imaging for the ex Vivo Characterization of Human Coronary Atherosclerotic Plaques. Radiology 2015; 277:64-72. [DOI: 10.1148/radiol.2015141614] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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34
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Meletta R, Borel N, Stolzmann P, Astolfo A, Klohs J, Stampanoni M, Rudin M, Schibli R, Krämer SD, Müller Herde A. Ex vivo differential phase contrast and magnetic resonance imaging for characterization of human carotid atherosclerotic plaques. Int J Cardiovasc Imaging 2015; 31:1425-34. [DOI: 10.1007/s10554-015-0706-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 07/06/2015] [Indexed: 11/25/2022]
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35
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Ultra-high-resolution 3D imaging of atherosclerosis in mice with synchrotron differential phase contrast: a proof of concept study. Sci Rep 2015; 5:11980. [PMID: 26165698 PMCID: PMC4499839 DOI: 10.1038/srep11980] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 06/12/2015] [Indexed: 11/13/2022] Open
Abstract
The goal of this study was to investigate the performance of 3D synchrotron differential phase contrast (DPC) imaging for the visualization of both macroscopic and microscopic aspects of atherosclerosis in the mouse vasculature ex vivo. The hearts and aortas of 2 atherosclerotic and 2 wild-type control mice were scanned with DPC imaging with an isotropic resolution of 15 μm. The coronary artery vessel walls were segmented in the DPC datasets to assess their thickness, and histological staining was performed at the level of atherosclerotic plaques. The DPC imaging allowed for the visualization of complex structures such as the coronary arteries and their branches, the thin fibrous cap of atherosclerotic plaques as well as the chordae tendineae. The coronary vessel wall thickness ranged from 37.4 ± 5.6 μm in proximal coronary arteries to 13.6 ± 3.3 μm in distal branches. No consistent differences in coronary vessel wall thickness were detected between the wild-type and atherosclerotic hearts in this proof-of-concept study, although the standard deviation in the atherosclerotic mice was higher in most segments, consistent with the observation of occasional focal vessel wall thickening. Overall, DPC imaging of the cardiovascular system of the mice allowed for a simultaneous detailed 3D morphological assessment of both large structures and microscopic details.
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36
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Krenkel M, Markus A, Bartels M, Dullin C, Alves F, Salditt T. Phase-contrast zoom tomography reveals precise locations of macrophages in mouse lungs. Sci Rep 2015; 5:9973. [PMID: 25966338 PMCID: PMC4428069 DOI: 10.1038/srep09973] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 03/24/2015] [Indexed: 11/09/2022] Open
Abstract
We have performed x-ray phase-contrast tomography on mouse lung tissue. Using a divergent x-ray beam generated by nanoscale focusing, we used zoom tomography to produce three-dimensional reconstructions with selectable magnification, resolution, and field of view. Thus, macroscopic tissue samples extending over several mm can be studied in sub-cellular-level structural detail. The zoom capability and, in particular, the high dose efficiency are enabled by the near-perfect exit wavefront of an optimized x-ray waveguide channel. In combination with suitable phase-retrieval algorithms, challenging radiation-sensitive and low-contrast samples can be reconstructed with minimal artefacts. The dose efficiency of the method is demonstrated by the reconstruction of living macrophages both with and without phagocytized contrast agents. We also used zoom tomography to visualize barium-labelled macrophages in the context of morphological structures in asthmatic and healthy mouse lung tissue one day after intratracheal application. The three-dimensional reconstructions showed that the macrophages predominantly localized to the alveoli, but they were also found in bronchial walls, indicating that these cells might be able to migrate from the lumen of the bronchi through the epithelium.
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Affiliation(s)
- Martin Krenkel
- Institute for X-ray Physics, University of Göttingen, 37077 Göttingen, Germany
| | - Andrea Markus
- Department of Haematology and Medical Oncology, University Medical Center Göttingen, 37075 Göttingen, Germany
| | - Matthias Bartels
- Institute for X-ray Physics, University of Göttingen, 37077 Göttingen, Germany
| | - Christian Dullin
- Department of Diagnostic and Interventional Radiology, University Medical Center Göttingen, 37075 Göttingen, Germany
| | - Frauke Alves
- 1] Department of Haematology and Medical Oncology, University Medical Center Göttingen, 37075 Göttingen, Germany [2] Department of Diagnostic and Interventional Radiology, University Medical Center Göttingen, 37075 Göttingen, Germany [3] Department of Molecular Biology of Neuronal Signals, Max-Planck-Institute of Experimental Medicine, 37077 Göttingen, Germany
| | - Tim Salditt
- Institute for X-ray Physics, University of Göttingen, 37077 Göttingen, Germany
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37
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X-ray phase-contrast tomography with a compact laser-driven synchrotron source. Proc Natl Acad Sci U S A 2015; 112:5567-72. [PMID: 25902493 DOI: 10.1073/pnas.1500938112] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Between X-ray tubes and large-scale synchrotron sources, a large gap in performance exists with respect to the monochromaticity and brilliance of the X-ray beam. However, due to their size and cost, large-scale synchrotrons are not available for more routine applications in small and medium-sized academic or industrial laboratories. This gap could be closed by laser-driven compact synchrotron light sources (CLS), which use an infrared (IR) laser cavity in combination with a small electron storage ring. Hard X-rays are produced through the process of inverse Compton scattering upon the intersection of the electron bunch with the focused laser beam. The produced X-ray beam is intrinsically monochromatic and highly collimated. This makes a CLS well-suited for applications of more advanced--and more challenging--X-ray imaging approaches, such as X-ray multimodal tomography. Here we present, to our knowledge, the first results of a first successful demonstration experiment in which a monochromatic X-ray beam from a CLS was used for multimodal, i.e., phase-, dark-field, and attenuation-contrast, X-ray tomography. We show results from a fluid phantom with different liquids and a biomedical application example in the form of a multimodal CT scan of a small animal (mouse, ex vivo). The results highlight particularly that quantitative multimodal CT has become feasible with laser-driven CLS, and that the results outperform more conventional approaches.
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38
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Hu J, Cao Y, Wu T, Li D, Lu H. 3D angioarchitecture changes after spinal cord injury in rats using synchrotron radiation phase-contrast tomography. Spinal Cord 2015; 53:585-90. [PMID: 25823804 DOI: 10.1038/sc.2015.49] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2014] [Revised: 02/02/2015] [Accepted: 02/06/2015] [Indexed: 11/09/2022]
Abstract
STUDY DESIGN A basic experiment study. OBJECTIVES An understanding of the three-dimensional (3D) angioarchitecture changes that occur after SCI will improve our knowledge of the pathogenesis of SCI and aid in the development of valuable therapeutic strategies to improve its poor outcomes. Our aim was to visualize the normal and traumatized spinal angioarchitecture in 3D using a high-resolution synchrotron radiation phase-contrast tomography (SR-PCT) and evaluate its diagnostic capability. SETTING SCI Center of Xiangya Hospital of Central South University in China. METHODS SR-PCT was used as novel high-resolution imaging tool to detect 3D morphological alterations in spinal cord microvasculature after injury. RESULTS In a rat model, the morphology of the microvasculature on 2D digital slices was matched with histological findings in both the normal and injured spinal cord. 3D angioarchitecture changes after SCI were successfully obtained via SR-PCT without the use of a contrast agent. Quantitative analysis on 3D images of the injured spinal cord revealed a significant decrease in the number and volume of vascular networks. This was especially relevant to vessels with a diameter <50 μm. CONCLUSION The 3D local blood supply to the spinal cord was severely disrupted after the acute violent injury. Our results indicate that the use of SR-PCT may improve our understanding of the pathogenesis of SCI and provide a new approach to the morphological investigation of neurovascular diseases in preclinical research.
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Affiliation(s)
- J Hu
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Y Cao
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - T Wu
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - D Li
- Department of Spine Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - H Lu
- Department of Sports Medicine, Research Centre of Sports Medicine, Xiangya Hospital, Central South University, Changsha, China
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39
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In-line phase-contrast and grating-based phase-contrast synchrotron imaging study of brain micrometastasis of breast cancer. Sci Rep 2015; 5:9418. [PMID: 25818989 PMCID: PMC4377630 DOI: 10.1038/srep09418] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 02/27/2015] [Indexed: 01/23/2023] Open
Abstract
Current bio-medical imaging researches aim to detect brain micrometastasis in early stage for its increasing incidence and high mortality rates. Synchrotron phase-contrast imaging techniques, such as in-line phase-contrast (IPC) and grating-based phase-contrast (GPC) imaging, could provide a high spatial and density imaging study of biological specimens' 3D structures. In this study, we demonstrated the detection efficiencies of these two imaging tools on breast cancer micrometastasis in an ex vivo mouse brain. We found that both IPC and GPC can differentiate abnormal brain structures induced by micrometastasis from the surrounding normal tissues. We also found that GPC was more sensitive in detecting the small metastasis as compared to IPC.
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40
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Zhang M, Peng G, Sun D, Xie Y, Xia J, Long H, Hu K, Xiao B. Synchrotron radiation imaging is a powerful tool to image brain microvasculature. Med Phys 2014; 41:031907. [PMID: 24593725 DOI: 10.1118/1.4865784] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Synchrotron radiation (SR) imaging is a powerful experimental tool for micrometer-scale imaging of microcirculation in vivo. This review discusses recent methodological advances and findings from morphological investigations of cerebral vascular networks during several neurovascular pathologies. In particular, it describes recent developments in SR microangiography for real-time assessment of the brain microvasculature under various pathological conditions in small animal models. It also covers studies that employed SR-based phase-contrast imaging to acquire 3D brain images and provide detailed maps of brain vasculature. In addition, a brief introduction of SR technology and current limitations of SR sources are described in this review. In the near future, SR imaging could transform into a common and informative imaging modality to resolve subtle details of cerebrovascular function.
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Affiliation(s)
- Mengqi Zhang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, People's Republic of China
| | - Guanyun Peng
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China
| | - Danni Sun
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, People's Republic of China
| | - Yuanyuan Xie
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, People's Republic of China
| | - Jian Xia
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, People's Republic of China
| | - Hongyu Long
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, People's Republic of China
| | - Kai Hu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, People's Republic of China
| | - Bo Xiao
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, People's Republic of China
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41
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Li J, Yuan H, Wu M, Dong L, Zhang L, Shi H, Luo S. Quantitative assessment of murine articular cartilage and bone using X-ray phase-contrast imaging. PLoS One 2014; 9:e111939. [PMID: 25369528 PMCID: PMC4219817 DOI: 10.1371/journal.pone.0111939] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 10/01/2014] [Indexed: 11/18/2022] Open
Abstract
Murine models for rheumatoid arthritis (RA) research can provide important insights for understanding RA pathogenesis and evaluating the efficacy of novel treatments. However, simultaneously imaging both murine articular cartilage and subchondral bone using conventional techniques is challenging because of low spatial resolution and poor soft tissue contrast. X-ray phase-contrast imaging (XPCI) is a new technique that offers high spatial resolution for the visualisation of cartilage and skeletal tissues. The purpose of this study was to utilise XPCI to observe articular cartilage and subchondral bone in a collagen-induced arthritis (CIA) murine model and quantitatively assess changes in the joint microstructure. XPCI was performed on the two treatment groups (the control group and CIA group, n = 9 per group) to monitor the progression of damage to the femur from the knee joint in a longitudinal study (at 0, 4 and 8 weeks after primary injection). For quantitative assessment, morphologic parameters were measured in three-dimensional (3D) images using appropriate image analysis software. Our results showed that the average femoral cartilage volume, surface area and thickness were significantly decreased (P<0.05) in the CIA group compared to the control group. Meanwhile, these decreases were accompanied by obvious destruction of the surface of subchondral bone and a loss of trabecular bone in the CIA group. This study confirms that XPCI technology has the ability to qualitatively and quantitatively evaluate microstructural changes in mouse joints. This technique has the potential to become a routine analysis method for accurately monitoring joint damage and comprehensively assessing treatment efficacy.
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Affiliation(s)
- Jun Li
- School of Biomedical Engineering, Capital Medical University, Beijing, China
| | - Huihui Yuan
- Department of Rheumatology and Immunology, Capital Medical University, Beijing, China
| | - Mingshu Wu
- School of Biomedical Engineering, Capital Medical University, Beijing, China
| | - Linan Dong
- School of Biomedical Engineering, Capital Medical University, Beijing, China
| | - Lu Zhang
- School of Biomedical Engineering, Capital Medical University, Beijing, China
| | - Hongli Shi
- School of Biomedical Engineering, Capital Medical University, Beijing, China
| | - Shuqian Luo
- School of Biomedical Engineering, Capital Medical University, Beijing, China
- * E-mail:
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42
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Basnayaka U, Chapman D, Adams G, Wysokinski T, Belev G, Baerwald A. Diffraction-enhanced Synchrotron Imaging of Bovine Ovaries Ex Vivo. J Med Imaging Radiat Sci 2014; 45:307-315. [PMID: 31051983 DOI: 10.1016/j.jmir.2014.01.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Revised: 12/13/2013] [Accepted: 01/22/2014] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The objective of this study was to test the hypothesis that diffraction-enhanced imaging (DEI), a synchrotron x-ray imaging technique, would provide greater contrast for evaluating bovine ovaries compared with conventional diagnostic ultrasonography. MATERIALS AND METHODS Bovine ovaries were evaluated ex vivo as follows: fresh without radiographic arterial contrast (n = 2), fresh with contrast (n = 1), preserved in 10% formalin without contrast (n = 2), and preserved with contrast (n = 1). Each ovary was imaged with DEI and subsequently with ultrasonography and histology. The ability to visualize and differentiate preantral and antral follicles, corpora lutea (CL), and cumulus oocyte complexes (COCs) were compared using DEI, ultrasonography, and histology. The diameter of follicles and CL were measured and compared using ultrasonography, DEI, and histology. The diameter of the smallest follicle detected was reported using each of the three imaging methods. The number of antral follicles (antral follicle count ≥2 mm) was compared between ultrasonography and DEI. RESULTS DEI enabled the detection of 71% of follicles and 67% of CL that were detected ultrasonographically. However, DEI did not allow the detection of COCs and cell layers of the follicle wall that were visualized histologically. Luteal tissues were not easily distinguished using DEI, and DEI was inferior for differentiating follicles and CL compared with ultrasonography. The mean follicle diameter was similar between DEI (4.00 ± 0.35 mm, fresh with contrast; 9.62 ± 2.43 mm, fresh without contrast) and ultrasonography (3.85 ± 0.28 mm, fresh with contrast; 8.97 ± 2.60 mm, fresh without contrast) (P > .05). However, the mean follicle diameter was greater using both DEI (4.00 ± 0.35 mm) and ultrasonography (3.85 ± 0.28 mm) compared with histology (2.21 ± 0.38 mm; P = .01, fresh ovaries with contrast). The mean CL diameter was similar between DEI (11.64 ± 1.67 mm), ultrasonography (9.34 ± 0.35 mm), and histology (9.59 ± 0.36 mm) (P > .05). The mean diameter of the smallest follicle detected was similar between DEI (3.06 ± 0.45 mm) and ultrasonography (2.95 ± 0.74 mm); both DEI and ultrasonographic measurements were greater than histology (0.39 ± 0.04 mm, P < .0001). The mean antral follicle count was similar between ultrasonography (6.50 ± 0.71 mm, fresh with no contrast; 6.50 ± 2.50 mm, preserved with no contrast) and DEI (4.50 ± 0.50 mm, fresh with no contrast; 6.50 ± 0.50 mm, preserved with no contrast) (P > .05). CONCLUSIONS The contrast resolution of antral follicles, CL, and COCs in bovine ovaries was inferior using DEI compared with ultrasonography and histology. Alternative synchrotron techniques, such as phase-contrast computed tomography and DEI computed tomography, may prove more effective than DEI for imaging ovaries ex vivo.
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Affiliation(s)
- Upekha Basnayaka
- Department of Obstetrics, Gynecology & Reproductive Sciences, College of Medicine, University of Saskatchewan, Saskatchewan, Canada
| | - Dean Chapman
- Department of Anatomy and Cell Biology, College of Medicine, University of Saskatchewan, Saskatchewan, Canada
| | - Gregg Adams
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatchewan, Canada
| | | | - George Belev
- Canadian Light Source, Saskatoon, Saskatchewan, Canada
| | - Angela Baerwald
- Department of Obstetrics, Gynecology & Reproductive Sciences, College of Medicine, University of Saskatchewan, Saskatchewan, Canada.
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Kim J, Park TJ, Kwon N, Lee D, Kim S, Kohmura Y, Ishikawa T, Kim KT, Curran T, Je JH. Dendritic planarity of Purkinje cells is independent of Reelin signaling. Brain Struct Funct 2014; 220:2263-73. [PMID: 24828132 PMCID: PMC4481330 DOI: 10.1007/s00429-014-0780-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Accepted: 04/14/2014] [Indexed: 02/02/2023]
Abstract
The dendritic planarity of Purkinje cells is critical for cerebellar circuit formation. In the absence of Crk and CrkL, the Reelin pathway does not function resulting in partial Purkinje cell migration and defective dendritogenesis. However, the relationships among Purkinje cell migration, dendritic development and Reelin signaling have not been clearly delineated. Here, we use synchrotron X-ray microscopy to obtain 3-D images of Golgi-stained Purkinje cell dendrites. Purkinje cells that failed to migrate completely exhibited conical dendrites with abnormal 3-D arborization and reduced dendritic complexity. Furthermore, their spines were fewer in number with a distorted morphology. In contrast, Purkinje cells that migrated successfully displayed planar dendritic and spine morphologies similar to normal cells, despite reduced dendritic complexity. These results indicate that, during cerebellar formation, Purkinje cells migrate into an environment that supports development of dendritic planarity and spine formation. While Reelin signaling is important for the migration process, it does not make a direct major contribution to dendrite formation.
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Affiliation(s)
- Jinkyung Kim
- X-ray Imaging Center, School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, South Korea
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44
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PET Neuroimaging: The White Elephant Packs His Trunk? Neuroimage 2014; 84:1094-100. [DOI: 10.1016/j.neuroimage.2013.08.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 08/07/2013] [Accepted: 08/11/2013] [Indexed: 01/30/2023] Open
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Beheshti A, Pinzer BR, McDonald JT, Stampanoni M, Hlatky L. Early tumor development captured through nondestructive, high resolution differential phase contrast X-ray imaging. Radiat Res 2013; 180:448-54. [PMID: 24125488 DOI: 10.1667/rr13327.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Although a considerable amount is known about molecular dysregulations in later stages of tumor progression, much less is known about the regulated processes supporting initial tumor growth. Insight into such processes can provide a fuller understanding of carcinogenesis, with implications for cancer treatment and risk assessment. Work from our laboratory suggests that organized substructure emerges during tumor formation. The goal here was to examine the feasibility of using state-of-the-art differential phase contrast X-ray imaging to investigate density differentials that evolve during early tumor development. To this end the beamline for TOmographic Microscopy and Coherent rAdiology experimenTs (TOMCAT) at the Swiss Light Source was used to examine the time-dependent assembly of substructure in developing tumors. Differential phase contrast (DPC) imaging based on grating interferometry as implemented with TOMCAT, offers sensitivity to density differentials within soft tissues and a unique combination of high resolution coupled with a large field of view that permits the accommodation of larger tissue sizes (1 cm in diameter), difficult with other imaging modalities.
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Affiliation(s)
- A Beheshti
- a Center of Cancer Systems Biology, GRI, Tufts University School of Medicine, Boston, Massachusetts
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46
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Weitz EA, Lewandowski C, Smolensky ED, Marjańska M, Pierre VC. A magnetoplasmonic imaging agent for copper(I) with dual response by MRI and dark field microscopy. ACS NANO 2013; 7:5842-5849. [PMID: 23746216 PMCID: PMC3733671 DOI: 10.1021/nn400928z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We present the design and synthesis of a responsive magnetoplasmonic assembly for copper(I) which allows monitoring of the concentration of the metal both in three dimensions by magnetic resonance imaging and with high spatial resolution by dark field microscopy. The probe consists of azide-functionalized iron oxide nanoparticles 11.6 nm in diameter and acetylene-terminated gold nanoparticles 44 nm in diameter that form three-dimensional networks of intermingled magnetic and plasmonic nanoparticles in the presence of copper. This aggregation results in a decrease in longitudinal relaxivity, and an initial increase followed by a sharp decrease in transverse relaxivity, a change observable both by T1- and T2-weighted images, concomitantly with a decrease of surface plasmon resonance intensity.
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Affiliation(s)
- Evan A. Weitz
- Department of Chemistry, University of Minnesota, Minneapolis MN 55455, USA
| | - Cutler Lewandowski
- Department of Chemistry, University of Minnesota, Minneapolis MN 55455, USA
| | - Eric D. Smolensky
- Department of Chemistry, University of Minnesota, Minneapolis MN 55455, USA
| | - Małgorzata Marjańska
- Center for Magnetic Resonance Research and Department of Radiology, University ofMinnesota, Minneapolis MN 55455, USA
| | - Valérie C. Pierre
- Department of Chemistry, University of Minnesota, Minneapolis MN 55455, USA
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Marinescu M, Langer M, Durand A, Olivier C, Chabrol A, Rositi H, Chauveau F, Cho TH, Nighoghossian N, Berthezène Y, Peyrin F, Wiart M. Synchrotron Radiation X-Ray Phase Micro-computed Tomography as a New Method to Detect Iron Oxide Nanoparticles in the Brain. Mol Imaging Biol 2013; 15:552-9. [DOI: 10.1007/s11307-013-0639-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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48
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Bravin A, Coan P, Suortti P. X-ray phase-contrast imaging: from pre-clinical applications towards clinics. Phys Med Biol 2012; 58:R1-35. [PMID: 23220766 DOI: 10.1088/0031-9155/58/1/r1] [Citation(s) in RCA: 379] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Phase-contrast x-ray imaging (PCI) is an innovative method that is sensitive to the refraction of the x-rays in matter. PCI is particularly adapted to visualize weakly absorbing details like those often encountered in biology and medicine. In past years, PCI has become one of the most used imaging methods in laboratory and preclinical studies: its unique characteristics allow high contrast 3D visualization of thick and complex samples even at high spatial resolution. Applications have covered a wide range of pathologies and organs, and are more and more often performed in vivo. Several techniques are now available to exploit and visualize the phase-contrast: propagation- and analyzer-based, crystal and grating interferometry and non-interferometric methods like the coded aperture. In this review, covering the last five years, we will give an overview of the main theoretical and experimental developments and of the important steps performed towards the clinical implementation of PCI.
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Affiliation(s)
- Alberto Bravin
- European Synchrotron Radiation Facility, 6 rue Horowitz, 38043 Grenoble Cedex, France.
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High-resolution, low-dose phase contrast X-ray tomography for 3D diagnosis of human breast cancers. Proc Natl Acad Sci U S A 2012; 109:18290-4. [PMID: 23091003 DOI: 10.1073/pnas.1204460109] [Citation(s) in RCA: 155] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Mammography is the primary imaging tool for screening and diagnosis of human breast cancers, but ~10-20% of palpable tumors are not detectable on mammograms and only about 40% of biopsied lesions are malignant. Here we report a high-resolution, low-dose phase contrast X-ray tomographic method for 3D diagnosis of human breast cancers. By combining phase contrast X-ray imaging with an image reconstruction method known as equally sloped tomography, we imaged a human breast in three dimensions and identified a malignant cancer with a pixel size of 92 μm and a radiation dose less than that of dual-view mammography. According to a blind evaluation by five independent radiologists, our method can reduce the radiation dose and acquisition time by ~74% relative to conventional phase contrast X-ray tomography, while maintaining high image resolution and image contrast. These results demonstrate that high-resolution 3D diagnostic imaging of human breast cancers can, in principle, be performed at clinical compatible doses.
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