Spatial uniformity of amplitude and polarization of the RF magnetic field, associate to SAR limitation constitute a crucial problem in the design of advanced Magnetic Resonance Imaging (MRI) equipment. As a result, the issue of shimming the RF magnetic field (i.e. optimizing its space uniformity) has received considerable attention in the recent literature. Recently these authors have introduced and tested in 2D a specialized optimization for this task, where constraints on minimum field, on polarization and SAR limitation have been enforced in an essentially-convex manner by using a convex-under-constraint optimization. Here we discuss the impact of a full 3D scenario, outlining the perceived limits of achievable performance.

3-D optimization of magnetic field shimming in MRI by convex programming approach / Attardo, ELIA AMEDEO; PEREZ CERQUERA, MANUEL RICARDO; F. P., Andriulli; Vecchi, Giuseppe. - (2012), pp. 1-2. ((Intervento presentato al convegno 2012 IEEE Antennas and Propagation Society International Symposium (APSURSI) tenutosi a Chicago, IL (USA) nel 8-14 July 2012 [10.1109/APS.2012.6349162].

3-D optimization of magnetic field shimming in MRI by convex programming approach

ATTARDO, ELIA AMEDEO;PEREZ CERQUERA, MANUEL RICARDO;VECCHI, Giuseppe
2012

Abstract

Spatial uniformity of amplitude and polarization of the RF magnetic field, associate to SAR limitation constitute a crucial problem in the design of advanced Magnetic Resonance Imaging (MRI) equipment. As a result, the issue of shimming the RF magnetic field (i.e. optimizing its space uniformity) has received considerable attention in the recent literature. Recently these authors have introduced and tested in 2D a specialized optimization for this task, where constraints on minimum field, on polarization and SAR limitation have been enforced in an essentially-convex manner by using a convex-under-constraint optimization. Here we discuss the impact of a full 3D scenario, outlining the perceived limits of achievable performance.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/2504594
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