文章基本信息

标题：Laser-wakefield accelerators as hard x-ray sources for 3D medical imaging of human bone
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作者：J. M. Cole ; J. C. Wood ; N. C. Lopes 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2015
卷号：5
期号：1
DOI：10.1038/srep13244
语种：English
出版社：Springer Nature
摘要：A bright μ m-sized source of hard synchrotron x-rays (critical energy E _crit > 30 keV) based on the betatron oscillations of laser wakefield accelerated electrons has been developed. The potential of this source for medical imaging was demonstrated by performing micro-computed tomography of a human femoral trabecular bone sample, allowing full 3D reconstruction to a resolution below 50 μ m. The use of a 1 cm long wakefield accelerator means that the length of the beamline (excluding the laser) is dominated by the x-ray imaging distances rather than the electron acceleration distances. The source possesses high peak brightness, which allows each image to be recorded with a single exposure and reduces the time required for a full tomographic scan. These properties make this an interesting laboratory source for many tomographic imaging applications.