Modeling vibrations of a tiled Talbot-Lau interferometer on a clinical CT

Schmid C, Viermetz M, Gustschin N, Noichl W, Haeusele J, Lasser T, Koehler T, Pfeiffer F (2022)

Publication Type: Journal article

Publication year: 2022

Journal

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

Pages Range: 1-1

DOI: 10.1109/TMI.2022.3217662

Abstract

X-ray computed tomography (CT) is an invaluable imaging technique for non-invasive medical diagnosis. However, for soft tissue in the human body the difference in attenuation is inherently small. Grating-based X-ray phase-contrast is a relatively novel imaging method which detects additional interaction mechanisms between photons and matter, namely refraction and small-angle scattering, to generate additional images with different contrast. The experimental setup involves a Talbot-Lau interferometer whose susceptibility to mechanical vibrations hindered acquisition schemes suitable for clinical routine in the past. We present a processing pipeline to identify spatially and temporally variable fluctuations occurring in an interferometer installed on a continuously rotating clinical CT gantry. The correlations of the vibrations in the modular grating setup are exploited to identify a small number of relevant fluctuation modes, allowing for a sample reconstruction free of vibration artifacts.

Involved external institutions

Technische Universität München (TUM) DE Germany (DE) Koninklijke Philips N.V. NL Netherlands (NL) Klinikum rechts der Isar DE Germany (DE)

How to cite

APA:

Schmid, C., Viermetz, M., Gustschin, N., Noichl, W., Haeusele, J., Lasser, T.,... Pfeiffer, F. (2022). Modeling vibrations of a tiled Talbot-Lau interferometer on a clinical CT. IEEE Transactions on Medical Imaging, 1-1. https://dx.doi.org/10.1109/TMI.2022.3217662

MLA:

Schmid, Clemens, et al. "Modeling vibrations of a tiled Talbot-Lau interferometer on a clinical CT." IEEE Transactions on Medical Imaging (2022): 1-1.

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