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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-6174

Barmet, C; De Zanche, N; Pruessmann, K P (2008). Spatiotemporal magnetic field monitoring for MR. Magnetic Resonance in Medicine, 60(1):187-197.

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MR experiments frequently rely on signal encoding by the application of magnetic fields that vary in both space and time. The accurate interpretation of the resulting signals often requires knowledge of the exact spatiotemporal field evolution during the experiment. To better fulfill this need, a new approach is presented that enables measuring the field evolution concurrently with any MR sequence. Miniature NMR probes are used to monitor the MR phase evolution around the object under investigation. Based on these data, a global phase model is calculated that can then be used as a basis for processing the actual image or spectroscopic data. The new method is demonstrated by MRI of a phantom, using spin-warp, spiral, and EPI trajectories. Throughout, the monitoring results enabled highly accurate image reconstruction, even in the presence of massive gradient imperfections.


60 citations in Web of Science®
66 citations in Scopus®
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2 downloads since deposited on 25 Nov 2008
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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Institute of Biomedical Engineering
Dewey Decimal Classification:170 Ethics
610 Medicine & health
Deposited On:25 Nov 2008 16:07
Last Modified:05 Apr 2016 12:36
Publisher DOI:10.1002/mrm.21603
PubMed ID:18581361

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