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Comparison of 31p mrs and 1h mri at 1.5 and 2.0 T

✍ Scribed by M. D. Boska; B. Hubesch; D. J. Meyerhoff; D. B. Twieg; G. S. Karczmar; G. B. Matson; M. W. Weiner

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
622 KB
Volume
13
Category
Article
ISSN
0740-3194

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✦ Synopsis

Abstract

The goals of this study were to compare ^31^P magnetic resonance spectroscopy (MRS) and ^1^H magnetic resonance imaging (MRI) of human subjects and phantoms at 1.5 and 2.0 T. The ^31^P signal‐to‐noise (S/N) ratios in phantom standards and in localized volumes in human brain and liver were compared at 1.5 and 2.0 T. In addition, T~1~ values for ^31^P resonances in human brain, ^31^P linewidths of metabolites in human brain and liver, ^1^H S/N in a phantom standard, and MR image quality in human head and body were compared at the two field strengths. The results of our study showed that at the higher strength field, (1) in vivo ^31^P MRS studies benefited from up to 32% improvement in S/N; (2) in vivo ^31^P MRS studies also benefited from increased spectral dispersion; (3) the quality of MR head images remained comparable; and (4) body images showed some decrease in image quality due to increased chemical shift, and flow and motion artifacts.

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