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Downsampling Strategies for MRS data

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons84402

Henning,  A
Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Citation

Fuchs, A., Henning, A., & Boesiger, P. (2012). Downsampling Strategies for MRS data. Poster presented at 20th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2012), Melbourne, Australia.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-B79A-5
Abstract
MR acquired data is usually sampled at higher much higher frequencies than the Nyquist condition. Before further processing this data needs to be downsampled to reduce the burden on storage requirements and processing time. Two commonly used downsample strategies are applied to ideal spectroscopic data and different artifacts related to these methods are identified. Especially in spectroscopy, artifacts in the initial time points of FIDs or phase distortions can lead to problems in further quantitative evaluations. Therefore a method is proposed that avoids the described problems and gives more reliable downsampled data.