Spectral Differential Phase Contrast X-Ray Radiography

Mechlem K, Sellerer T, Viermetz M, Herzen J, Pfeiffer F (2020)

Publication Type: Journal article

Publication year: 2020

Journal

IEEE Transactions on Medical Imaging Institute of Electrical and Electronics Engineers (IEEE)

Book Volume: 39

Pages Range: 578-587

Article Number: 8784289

Journal Issue: 3

DOI: 10.1109/TMI.2019.2932450

Abstract

We investigate the combination of two emerging X-ray imaging technologies, namely spectral imaging and differential phase contrast imaging. By acquiring spatially and temporally registered images with several different X-ray spectra, spectral imaging can exploit differences in the energy-dependent attenuation to generate material selective images. Differential phase contrast imaging uses an entirely different contrast generation mechanism: The phase shift that an X-ray wave exhibits when traversing an object. As both methods can determine the (projected) electron density, we propose a novel material decomposition algorithm that uses the spectral and the phase contrast information simultaneously. Numerical experiments show that the combination of these two imaging techniques benefits from the strengths of the individual methods while the weaknesses are mitigated: Quantitatively accurate basis material images are obtained and the noise level is strongly reduced, compared to conventional spectral X-ray imaging.

Involved external institutions

Technische Universität München (TUM)

Germany (DE)

How to cite

APA:

Mechlem, K., Sellerer, T., Viermetz, M., Herzen, J., & Pfeiffer, F. (2020). Spectral Differential Phase Contrast X-Ray Radiography. IEEE Transactions on Medical Imaging, 39(3), 578-587. https://doi.org/10.1109/TMI.2019.2932450

MLA:

Mechlem, Korbinian, et al. "Spectral Differential Phase Contrast X-Ray Radiography." IEEE Transactions on Medical Imaging 39.3 (2020): 578-587.

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