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Vortrag

Fast characterization of higher-order shim dynamics by impulse response measurements with a dynamic field camera

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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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Zitation

Vannesjö, J., Fillmer A, Barmet C, Boesiger, P., & Henning, A. (2011). Fast characterization of higher-order shim dynamics by impulse response measurements with a dynamic field camera. Talk presented at 19th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2011). Montréal, Canada.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0013-BC14-7
Zusammenfassung
With the use of dynamic shimming higher demands are put on shim systems, regarding switching speed and dynamic characteristics. This calls for a fast and reliable method to comprehensively characterize the dynamic properties of the shims. Here we have investigated the use of shim impulse response functions (SIRF), as probed with a suitable set of input pulses and measurements of the field responses with a dynamic field camera. It was shown that the SIRF measurements could reveal different dynamic features of the shims, which may prove useful for system diagnostics and pre-emphasis setting.