Laser-driven x-ray sources are an emerging alternative to conventional x-ray tubes and synchrotron sources. We present results on microtomographic x-ray imaging of a cancellous human bone sample using synchrotron-like betatron radiation. The source is driven by a 100-TW-class titanium–sapphire laser system and delivers over ${10}^8$ X-ray photons per second. Compared to earlier studies, the acquisition time for an entire tomographic dataset has been reduced by more than an order of magnitude. Additionally, the reconstruction quality benefits from the use of statistical iterative reconstruction techniques. Depending on the desired resolution, tomographies are thereby acquired within minutes, which is an important milestone toward real-life applications of laser–plasma x-ray sources.

中文翻译：

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使用激光驱动的电子加速器源进行快速X射线显微断层扫描

激光驱动的X射线源是传统X射线管和同步加速器源的新兴替代品。我们目前使用同步加速器类似的倍速电子辐射对松质人骨样品的显微断层摄影X射线成像的结果。光源由100 TW级钛-蓝宝石激光系统驱动，并提供${10}^8$每秒X射线光子。与早期研究相比，整个断层扫描数据集的采集时间减少了一个数量级以上。另外，重建质量得益于统计迭代重建技术的使用。根据所需的分辨率，可以在数分钟内完成断层扫描，这是实现激光等离子X射线源在现实生活中的重要里程碑。