Frequency-Selective Analysis of Multichannel Magnetic Resonance Spectroscopy Data
2005 (English)In: Proceedings of the 27th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2005Conference paper (Refereed)
In several practical magnetic resonance spectroscopy (MRS) applications the user is interested only in the spectral content of a specific frequency band of the spectrum. A frequency-selective (or sub-band) method estimates only the parameters of those spectroscopic components that lie in a preselected frequency band of the spectrum in a computationally efficient manner. Multichannel MRS is a technique that employs phased-array receive coils to increase the signal-to-noise ratio (SNR) in the spectra by combining several simultaneous measurements of the magnetic resonance (MR) relaxation of an excited sample. In this paper we suggest a frequency-selective multichannel parameter estimation approach that combines the appealing features (high speed and improved SNR) of the two techniques above. The presented method shows parameter estimation accuracies comparable to those of existing full-band multichannel techniques in the high SNR case, but at a considerably lower computational complexity, and significantly better parameter estimation accuracies in low SNR scenarios.
Place, publisher, year, edition, pages
IdentifiersURN: urn:nbn:se:uu:diva-76430OAI: oai:DiVA.org:uu-76430DiVA: diva2:104342