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Iterative reconstruction methods for abdominal water-fat MRIThe signal acquired from MRI is proportional to the
density of hydrogen nuclei. The diagnostical
value of a measurement can increase significantly when
the signal from fat bound hydrogen
nuclei is suppressed or exactly measured. The fact that
fat-bound hydrogen nuclei have a
slightly differing resonance frequency from those bound
in water can be used for an exact
determination of the signal spectrum.In recent years, this approach for signal separation
gained increased attention since it enables a
quantitative measurement of the fat density on the one
hand, and, on the other hand, a better
quality of fat suppression compared to conventional
methods. However, additional
measurements are required causing a lengthened
acquisition time. The aim of this project is to
reduce the acquisition time by iterative reconstruction
techniques.
| Project manager: Dr. Marcel Dominik Nickel , Prof. Dr.-Ing. habil. Andreas Maier, Prof. Dr.-Ing. Joachim Hornegger
Project participants: Felix Lugauer, M. Sc.
Keywords: abdominal MRI; water-fat quantification; iterative reconstruction; compressed sensing
Duration: 1.12.2013 - 30.5.2017
Sponsored by: Siemens AG, Healthcare Sector
Contact: Maier, Andreas Phone +49 9131 85 27883, Fax +49 9131 85 27270, E-Mail: andreas.maier@fau.de
| Publications |
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Lugauer, Felix ; Nickel, Dominik ; Wetzl, Jens ; Kiefer, Berthold ; ; Maier, Andreas: Accelerating Multi-Echo Water-Fat MRI with a Joint Locally Low-Rank and Spatial Sparsity-Promoting Reconstruction. In: Magnetic Resonance Materials in Physics, Biology and Medicine 30 (2017), No. 2, pp 189-202 [doi>10.1007/s10334-016-0595-7] | Allen, Brian ; Lugauer, Felix ; Nickel, Dominik ; Bhatti, Lubna ; Dafalla, Randa ; Dale, Brian ; Jaffe, Tracy ; Bashir, Mustafa: Effect of a Low-Rank Denoising Algorithm on Quantitative MRI-Based Measures of Liver Fat and Iron. In: International Society for Magnetic Resonance in Medicine (Ed.) : Proceedings of the 24th Annual Meeting of the ISMRM (ISMRM 2016) (24th Annual Meeting of the ISMRM (ISMRM 2016) Singapur 7.-13.5.2016). 2016, pp 4224. | Lugauer, Felix ; Nickel, Dominik ; Kannengiesser, Stephan ; Barnes, Samuel ; Holshouser, Barbara ; Wetzl, Jens ; ; Maier, Andreas: Improving Parameter Mapping in MRI Relaxometry and Multi-Echo Dixon Using an Automated Spectral Denoising. In: International Society for Magnetic Resonance in Medicine (Ed.) : Proceedings of the 24th Annual Meeting of the ISMRM (ISMRM 2016) (24th Annual Meeting of the ISMRM (ISMRM 2016) Singapur 7.-13.5.2016). 2016, pp 3269. | Lugauer, Felix ; Nickel, Dominik ; Wetzl, Jens ; Kannengiesser, Stephan A. R. ; Maier, Andreas ; : Robust Spectral Denoising for Water-Fat Separation in Magnetic Resonance Imaging. In: Nassir Navab ; ; Wiliam M. Wells ; Alejandro F. Frangi (Ed.) : Medical Image Computing and Computer-Assisted Intervention (MICCAI 2015 Munich, Germany 05.10.2015). Berlin : Springer International Publishing, 2015, pp 667-674. (Lecture Notes in Computer Science Vol. 9350) - ISBN 978-3-319-24570-6 [doi>10.1007/978-3-319-24571-3_80] | Lugauer, Felix ; Nickel, Dominik ; Wetzl, Jens ; Kiefer, Berthold ; : Water-Fat Separation Using a Locally Low-Rank Enforcing Reconstruction. In: ISMRM (Ed.) : Proceedings of the 23rd Annual Meeting of the ISMRM (ISMRM 2015) (23rd Annual Meeting of the ISMRM (ISMRM 2015) Toronto, ON, Canada 30.5-5.6.2015). 2015, pp 3652. |
Institution: Chair of Computer Science 5 (Pattern Recognition)
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