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Title: High-resolution short-exposure small-animal laboratory x-ray phase-contrast tomography

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep39074· OSTI ID:1352154
 [1];  [2];  [3];  [4];  [2]
  1. KTH Royal Institute of Technology/Albanova, Stockholm (Sweden); Stanford Univ., Stanford, CA (United States)
  2. KTH Royal Institute of Technology/Albanova, Stockholm (Sweden)
  3. Technische Univ. Munchen, Garching (Germany)
  4. Helmholtz Zentrum Munchen, Neuherberg (Germany)

X-ray computed tomography of small animals and their organs is an essential tool in basic and preclinical biomedical research. In both phase-contrast and absorption tomography high spatial resolution and short exposure times are of key importance. However, the observable spatial resolutions and achievable exposure times are presently limited by system parameters rather than more fundamental constraints like, e.g., dose. Here we demonstrate laboratory tomography with few-ten μm spatial resolution and few-minute exposure time at an acceptable dose for small-animal imaging, both with absorption contrast and phase contrast. The method relies on a magnifying imaging scheme in combination with a high-power small-spot liquid-metal-jet electron-impact source. Lastly, the tomographic imaging is demonstrated on intact mouse, phantoms and excised lungs, both healthy and with pulmonary emphysema.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1352154
Journal Information:
Scientific Reports, Vol. 6, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 30 works
Citation information provided by
Web of Science

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High-resolution μCT of a mouse embryo using a compact laser-driven X-ray betatron source journal June 2018
An interactive and intuitive visualisation method for X-ray computed tomography data of biological samples in 3D Portable Document Format journal October 2019
High-spatial-resolution x-ray fluorescence tomography with spectrally matched nanoparticles journal August 2018
A quantitative analysis of 3D-cell distribution in regenerative muscle-skeletal system with synchrotron X-ray computed microtomography journal September 2018
Three-dimensional virtual histology of human cerebellum by X-ray phase-contrast tomography text January 2018
A new in-line X-ray phase-contrast computed tomography reconstruction algorithm based on adaptive-weighted anisotropic TpV regularization for insufficient data journal June 2019
Quantification of image texture in X‐ray phase‐contrast‐enhanced projection images of in vivo mouse lungs observed at varied inflation pressures journal August 2019
Cellular-resolution 3D virtual histology of human coronary arteries using x-ray phase tomography journal July 2018
Real-time in vivo imaging of regional lung function in a mouse model of cystic fibrosis on a laboratory X-ray source journal January 2020
Rigid Embedding of Fixed and Stained, Whole, Millimeter-Scale Specimens for Section-free 3D Histology by Micro-Computed Tomography journal October 2018
Novel imaging approaches for small animal models of lung disease (2017 Grover Conference series) journal March 2018
Evaluation of different heavy-metal stains and embedding media for phase contrast tomography of neuronal tissue conference September 2019
Photon flux determination of a liquid-metal jet X-ray source by means of photon scattering journal January 2019
Evaluation of different heavy-metal stains and embedding media for phase contrast tomography of neuronal tissue text January 2019
Propagation-based Phase-Contrast X-ray Imaging at a Compact Light Source journal July 2017
An iterative image reconstruction algorithm combined with forward and backward diffusion filtering for in-line X-ray phase-contrast computed tomography journal August 2018
Implementation of a double-grating interferometer for phase-contrast computed tomography in a conventional system nanotom ® m journal March 2018
High-resolution μCT of a mouse embryo using a compact laser-driven X-ray betatron source text January 2018
Assessment of airway response distribution and paradoxical airway dilation in mice during methacholine challenge journal March 2017
Three-dimensional virtual histology of human cerebellum by X-ray phase-contrast tomography journal June 2018
Application of a novel in vivo imaging approach to measure pulmonary vascular responses in mice journal September 2018