http://www.cnr.it/ontology/cnr/individuo/prodotto/ID81388

Signal-to-Noise improvement of cardiac Magnetic Resonance Spectroscopy signals acquired by phased-array coils: a simulation based approach (Contributo in atti di convegno)

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Signal-to-Noise improvement of cardiac Magnetic Resonance Spectroscopy signals acquired by phased-array coils: a simulation based approach (Contributo in atti di convegno) (literal)

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Martini N. 1; Santarelli M. F. 2; Milanesi M. 3; Giovannetti G. 2; Positano V. 3; Vanello N. 4; Landini L. 4 (2008)
Signal-to-Noise improvement of cardiac Magnetic Resonance Spectroscopy signals acquired by phased-array coils: a simulation based approach
in 4th IET International Conference on Advances in Medical, Signal and Information Processing, MEDSIP 2008, Santa Margherita Ligure (Itali, 14-16 Luglio 2008
(literal)

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Martini N. 1; Santarelli M. F. 2; Milanesi M. 3; Giovannetti G. 2; Positano V. 3; Vanello N. 4; Landini L. 4 (literal)

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In: Advances in Medical Signal and Processing MEDSIP 2008 (Santa Margherita Ligure (Italia), 14-16 Luglio 2008). Proceedings, pp. 1 - 4. The Institution of Engineering and Technology, 2008. (literal)

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ABSTRACT: Magnetic resonance spectroscopy (MRS) is a non-invasive technique for obtaining biochemical information in vivo. Since the amplitude of the peaks in magnetic resonance (MR) spectra is proportional to the metabolite concentrations, obtaining the best signal-to-noise ratio (SNR) is fundamental for the accurate quantification of the metabolites. New acquisition strategies for the improvement of the intrinsic low SNR of MRS signals, without increasing the examination time, have been designed. These approaches are based on the use of multiple receiving coils, so called phased array coils. In this context one of the main challenges is to determine the best combination of the acquired signals that optimize the resulting SNR. This paper describes a novel method for the combination of MR signals acquired by phased array coils, even in presence of correlated noise between the acquisition channels. Performance evaluation is carried out on simulated 1H-MRS signals and experimental results are obtained on in vivo cardiac 1H-MR spectra. (literal)

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1 Università di Pisa, 2 CNR-IFC, Pisa, 3 Foundation G. Monasterio, Pisa, Italy, 4 Department of Information Engineering, University of Pisa, Pisa, Italy (literal)

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