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Home > Issues > SearchThe Impact of MRS Phantom Container on the Quality of Spectrum Provided by 3T MRI
Journal of Magnetics, Volume 25, Number 3, 30 Sep 2020, Pages 363-368
Mahdi Saeedi-Moghadam (Medical Imaging Research Center, Shiraz University of Medical Sciences), Mehrzad Lotfi (Medical Imaging Research Center, Shiraz University of Medical Sciences), Banafsheh Zeinali-Rafsanjani * 
(Medical Imaging Research Center, Shiraz University of Medical Sciences), Reza Jalli (Medical Imaging Research Center, Shiraz University of Medical Sciences)
(Medical Imaging Research Center, Shiraz University of Medical Sciences), Reza Jalli (Medical Imaging Research Center, Shiraz University of Medical Sciences)
Abstract
This study intended to evaluate the effect of the material of phantom-container on the MRS signal in 3T MRI.
Three phantom-container consisting of clear laboratory-glass, PET-bottle, and falcon-tube was used. The
metabolites contained 6 mM Cr and 3 mM Cho. FWHM and SNR of Cho and both peaks of Cr were calculated.
FWHM of all the peaks of glass-phantom was 50.08 and 19.48 % fewer than those provided by PET and
falcon-tube; also, the SNR of the all the peaks of the PET and falcon-tube were by average 77.99 and 91.18 %
fewer than the peaks provided by glass-phantom. The laboratory-glass is a good material for building MRS
phantoms since it does not affect the baseline-noise, FWHM, and SNR of the spectra. It was also revealed that
the size of the phantom and the distance between the spectroscopy volume and phantom walls were important
and can affect the baseline-noise.
Three phantom-container consisting of clear laboratory-glass, PET-bottle, and falcon-tube was used. The
metabolites contained 6 mM Cr and 3 mM Cho. FWHM and SNR of Cho and both peaks of Cr were calculated.
FWHM of all the peaks of glass-phantom was 50.08 and 19.48 % fewer than those provided by PET and
falcon-tube; also, the SNR of the all the peaks of the PET and falcon-tube were by average 77.99 and 91.18 %
fewer than the peaks provided by glass-phantom. The laboratory-glass is a good material for building MRS
phantoms since it does not affect the baseline-noise, FWHM, and SNR of the spectra. It was also revealed that
the size of the phantom and the distance between the spectroscopy volume and phantom walls were important
and can affect the baseline-noise.
Keywords: magnetic resonance spectroscopy; magnetism of impurities; phantom; signal to noise
DOI: https://doi.org/10.4283/JMAG.2020.25.3.363
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