A filter model to analyze reconstruction artifacts in perfusion C-arm CT

Fieselmann A, Dennerlein F, Deuerling-Zheng Y, Boese J, Fahrig R, Hornegger J (2010)

Publication Type: Conference contribution, Conference Contribution

Publication year: 2010

Journal

IEEE Nuclear Science Symposium Conference Record

Original Authors: Fieselmann A., Dennerlein F., Deuerling-Zheng Y., Boese J., Fahrig R., Hornegger J.

Book Volume: null

Pages Range: 2239-2242

Event location: Knoxville, TN

Journal Issue: null

DOI: 10.1109/NSSMIC.2010.5874181

Abstract

Interventional perfusion imaging with a C-arm angiography system capable of 3-D imaging (C-arm CT) could optimize the clinical workflow during stroke treatment. Acquisition times are currently of the order of several seconds per shortscan and filtered backprojection reconstruction artifacts can arise due to the time-dependence of the attenuation values. In this paper, we present a novel formalism to model reconstruction artifacts by a spatio-temporal filter in the object domain. The filter consists of terms that depend on the temporal derivatives of the attenuation values. Using this model, artifacts due to time-dependent attenuation values can be well explained and studied. We apply the filter model to analyze redundancy weighting schemes in order to reduce these artifacts. Furthermore, this model could be the basis to develop new dynamic reconstruction algorithms. © 2010 IEEE.

Authors with CRIS profile

Andreas Fieselmann Lehrstuhl für Informatik 14 (Bild- und Sprachverarbeitung) Joachim Hornegger Lehrstuhl für Informatik 14 (Bild- und Sprachverarbeitung)

Involved external institutions

Siemens AG DE Germany (DE) Stanford University US United States (USA) (US)

How to cite

APA:

Fieselmann, A., Dennerlein, F., Deuerling-Zheng, Y., Boese, J., Fahrig, R., & Hornegger, J. (2010). A filter model to analyze reconstruction artifacts in perfusion C-arm CT. In Proceedings of the 2010 IEEE Nuclear Science Symposium, Medical Imaging Conference, NSS/MIC 2010 and 17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors, RTSD 2010 (pp. 2239-2242). Knoxville, TN.

MLA:

Fieselmann, Andreas, et al. "A filter model to analyze reconstruction artifacts in perfusion C-arm CT." Proceedings of the 2010 IEEE Nuclear Science Symposium, Medical Imaging Conference, NSS/MIC 2010 and 17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors, RTSD 2010, Knoxville, TN 2010. 2239-2242.

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