X-Ray Multimodal Tomography Using Speckle-Vector Tracking

Abstract

We demonstrate computerized tomography (CT) reconstructions from absorption, phase and dark-field signals obtained from scans acquired when the x-ray probe light is modulated with speckle. Two different interlaced schemes are proposed to reduce the number of sample exposures. First, the already demonstrated x-ray speckle-vector tracking (XSVT) concept for projection imaging allows the three signal CT reconstructions from multiple images per projection. Second, a modified XSVT approach is shown to provide absorption and phase reconstructions, this time from a single image per angular projection. Reconstructions from data obtained at a synchrotron facility emphasize the potential of the approaches for the imaging of complex samples.

10 pages/8 figures

References in corpus (1)

• Near-field speckle-scanning-based x-ray imaging

Cited by in corpus (7)

• Single-shot x-ray speckle-based imaging of a single-material object
• X-ray Multimodal Intrinsic-Speckle-Tracking
• Near-field speckle-scanning-based X-ray tomography
• High-speed processing of X-ray wavefront marking data with the Unified Modulated Pattern Analysis (UMPA) model
• Quantifying the x-ray dark-field signal in single-grid imaging
• Directional dark-field implicit x-ray speckle tracking using an anisotropic-diffusion Fokker-Planck equation
• Near-perfect efficiency in X-ray phase microtomography