Robust Spectral Denoising for Water-Fat Separation in Magnetic Resonance Imaging

Beitrag bei einer Tagung


Details zur Publikation

Autor(en): Lugauer F, Nickel D, Wetzl J, Kannengiesser SAR, Maier A, Hornegger J
Verlag: Springer-verlag
Jahr der Veröffentlichung: 2015
Band: 9350
Tagungsband: 18th International Conference, Munich, Germany, October 5-9, 2015, Proceedings, Part II
Seitenbereich: 667-674
ISSN: 0302-9743


Abstract


Fat quantification based on the multi-echo Dixon method is gaining importance in clinical practice as it can match the accuracy of spectroscopy but provides high spatial resolution. Accurate quantification protocols, though, are limited to low SNR and suffer from a high noise bias. As the clinically relevant water and fat components are estimated by fitting a non-linear signal model to the data, the uncertainty is further amplified. In this work, we first establish the low-rank property and its locality assumptions for water-fat MRI and, consequently, propose a model-consistent but adaptive spectral denoising. A robust noise estimation in combination with a risk-minimizing threshold adds to a fully-automatic method. We demonstrate its capabilities on abdominal fat quantification data from in-vivo experiments. The denoising reduces the fit error on average by 37% and the uncertainty of the fat fraction by 58% in comparison to the original data while being edge-preserving.



FAU-Autoren / FAU-Herausgeber

Hornegger, Joachim Prof. Dr.-Ing.
Lehrstuhl für Informatik 5 (Mustererkennung)
Lugauer-Breunig, Felix
Lehrstuhl für Informatik 5 (Mustererkennung)
Maier, Andreas Prof. Dr.-Ing.
Lehrstuhl für Informatik 5 (Mustererkennung)
Wetzl, Jens
Lehrstuhl für Informatik 5 (Mustererkennung)


Zitierweisen

APA:
Lugauer, F., Nickel, D., Wetzl, J., Kannengiesser, S.A.R., Maier, A., & Hornegger, J. (2015). Robust Spectral Denoising for Water-Fat Separation in Magnetic Resonance Imaging. In 18th International Conference, Munich, Germany, October 5-9, 2015, Proceedings, Part II (pp. 667-674). Springer-verlag.

MLA:
Lugauer, Felix, et al. "Robust Spectral Denoising for Water-Fat Separation in Magnetic Resonance Imaging." Proceedings of the 18th International Conference, Munich, Germany, October 5-9, 2015, Proceedings, Part II Springer-verlag, 2015. 667-674.

BibTeX: 

Zuletzt aktualisiert 2018-19-04 um 03:15