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

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 achi...

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Bibliographic Details
Published in:Scientific reports 2016-12, Vol.6 (1), p.39074, Article 39074
Main Authors: Larsson, Daniel H., Vågberg, William, Yaroshenko, Andre, Yildirim, Ali Önder, Hertz, Hans M.
Format: Article
Language:English
Subjects:
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631/1647/245/1847
639/166/985
Absorption
Animals
Animals, Laboratory
biomedical engineering
Computed tomography
Contrast Media
Emphysema
Equipment Design
Humanities and Social Sciences
Laboratories
Lung - diagnostic imaging
Lungs
Medical imaging
Mice
multidisciplinary
Phantoms, Imaging
Pulmonary Emphysema - diagnostic imaging
RADIOLOGY AND NUCLEAR MEDICINE
Science
Spatial discrimination
Time
Tomography
Tomography, X-Ray Computed - methods
X-ray tomography
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Summary: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. The tomographic imaging is demonstrated on intact mouse, phantoms and excised lungs, both healthy and with pulmonary emphysema.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep39074