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  Hybrid Digital Phase-Locked Loop and Moving Average Filtering Improves SNR in Spatio-Temporal Field Monitoring

Chang, P., Eschelbach, M., Scheffler, K., & Henning, A. (2014). Hybrid Digital Phase-Locked Loop and Moving Average Filtering Improves SNR in Spatio-Temporal Field Monitoring. Poster presented at Joint Annual Meeting ISMRM-ESMRMB 2014, Milano, Italy.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0001-32FA-D Version Permalink: https://hdl.handle.net/21.11116/0000-0001-3738-3
Genre: Poster

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http://www.ismrm.org/14/program_files/TP04.htm (Abstract)
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 Creators:
Chang, Paul1, 2, Author           
Eschelbach, Martin2, 3, Author           
Scheffler, Klaus2, 3, Author           
Henning, Anke1, 2, Author           
Affiliations:
1Research Group MR Spectroscopy and Ultra-High Field Methodology, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_2528692              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              
3Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497796              

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 Abstract: Recent spatio-temporal B0 field monitoring methods utilise an array of NMR probes to measure the dynamics of the B0 field. The B0 field is usually characterised by spherical harmonic coefficients which are obtained from the phase signals (or phase coefficients) of the probe FIDs. A hybrid method is presented that uses a moving average filter in conjunction with a digital phase locked-loop filter to improve the SNR of the phase signals measured by the NMR probes. This method takes advantage of the FID SNR to reduce the phase jitter in the phase signal. It is also easy to implement for real-time applications.

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 Dates: 2014-05
 Publication Status: Issued
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 Identifiers: BibTex Citekey: ChangESH2014
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Title: Joint Annual Meeting ISMRM-ESMRMB 2014
Place of Event: Milano, Italy
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Title: Joint Annual Meeting ISMRM-ESMRMB 2014
Source Genre: Proceedings
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Pages: - Volume / Issue: - Sequence Number: 1393 Start / End Page: - Identifier: -