2016
DOI: 10.1007/s10910-016-0693-9
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Iterative averaging of spectra as a powerful way of suppressing spurious resonances in signal processing

Abstract: The fast Padé transform (FPT) was applied to magnetic resonance spectroscopic (MRS) time signals encoded in vivo on a 1.5 T scanner from the parietal-temporal brain region of a pediatric patient who had suffered cerebral asphyxia. An iterative averaging procedure was implemented to the 9th iteration, whereby spurious structures on the total shape spectra were effectively suppressed. The parametric and non-parametric FPT (±) were verified to reconstruct equivalent total shape spectra. Via the parametric FPT, th… Show more

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Cited by 12 publications
(17 citation statements)
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“…Most recently, the mechanism of SNS has been shown analytically [79]. Therein, the exact reconstruction of the input time signal and spectrum was demonstrated by eliciting, via an analytical derivation, two key features: pole-zero coincidence and near-zero amplitude of a Froissart doublet, which is a pole-zero spurious pair.…”
Section: )mentioning
confidence: 99%
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“…Most recently, the mechanism of SNS has been shown analytically [79]. Therein, the exact reconstruction of the input time signal and spectrum was demonstrated by eliciting, via an analytical derivation, two key features: pole-zero coincidence and near-zero amplitude of a Froissart doublet, which is a pole-zero spurious pair.…”
Section: )mentioning
confidence: 99%
“…Besides the previous studies on synthesized FIDs, and the FIDs encoded from the GE phantom, the FPT has also been used to process MRS time signals encoded in vivo on a 1.5 T MR scanner from pediatric brain tumor [90], as well as from pediatric cerebral asphyxia [79,91] and from healthy adult brain [92]. Studies applying the FPT were also done on MRS time signals encoded from healthy adult human brain using higher field MR scanners (4 and 7 T) [67,68,77,[93][94][95].…”
Section: The Fast Padé Transform For Processing In Vivo Encoded Mrs Tmentioning
confidence: 99%
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