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EnglishSpatial 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 / E.A. Attardo; M. Perez Cerquera; F.P. Andriulli; G. Vecchi. - In: DIGEST - IEEE ANTENNAS AND PROPAGATION SOCIETY. INTERNATIONAL SYMPOSIUM. - ISSN 1522-3965. - (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.
| Titolo: | 3-D optimization of magnetic field shimming in MRI by convex programming approach |
| Autori: | |
| Data di pubblicazione: | 2012 |
| Rivista: | |
| Abstract: | Spatial uniformity of amplitude and polarization of the RF magnetic field, associate to SAR limit...ation 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. |
| ISBN: | 9781467304610 |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| 2504594.pdf | 2. Post-print / Author's Accepted Manuscript | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
http://hdl.handle.net/11583/2504594
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