title: Suppression of spectral anomalies in SSFP-NMR signal by the Krylov Basis Diagonalization Method.
abstract: Krylov Basis Diagonalization Method (KBDM) is a numerical procedure used to fit time domain signals as a sum of exponentially damped sinusoids. In this work KBDM is used as an alternative spectral analysis tool, complimentary to Fourier transform. We report results obtained from (13)C Nuclear Magnetic Resonance (NMR) by Steady State Free Precession (SSFP) measurements in brucine, C23H26N2O4. Results lead to the conclusion that the KBDM can be successfully applied, mainly because it is not influenced by truncation or phase anomalies, as observed in the Fourier transform spectra.
authors.affiliation: Instituto de Física de São Carlos, Universidade de São Paulo, Av. Trabalhador São-carlense 400, São Carlos, SP 13566-590, Brazil; Embrapa Instrumentação, Rua XV de Novembro 1452, São Carlos, SP 13560-970, Brazil.
authors.forename: Tiago Bueno
authors.initials: TB
authors.lastname: Moraes
authors.affiliation: Embrapa Instrumentação, Rua XV de Novembro 1452, São Carlos, SP 13560-970, Brazil.
authors.forename: Poliana Macedo
authors.initials: PM
authors.lastname: Santos
authors.affiliation: Instituto de Física de São Carlos, Universidade de São Paulo, Av. Trabalhador São-carlense 400, São Carlos, SP 13566-590, Brazil. Electronic address: magon@ifsc.usp.br.
authors.forename: Claudio Jose
authors.initials: CJ
authors.lastname: Magon
authors.affiliation: Embrapa Instrumentação, Rua XV de Novembro 1452, São Carlos, SP 13560-970, Brazil.
authors.forename: Luiz Alberto
authors.initials: LA
authors.lastname: Colnago
keywords: FDM; FFT; KBDM; SSFP; Spectral analysis