In vivo evaluation of intramuscular adipose tissue using ultrasonography

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This study assessed intramuscular fat (IMF), which is related to metabolic syndrome. IMF of vastus lateralis and biceps femoris was determined using ultrasonography, 1H- MRS and MRI. Fifteen young men and women and fifteen old men and women participated in this study. Ultrasonography, 1H-MRS and MRI were taken to determine IMF. There were no significant correlation coefficients between IMF by ultrasonography and IMF by 1H-MRS or MRI within each group evaluation. However, there were significant correlation coefficients between IMF by ultrasonography and IMF by 1H-MRS or MRI when expanded to all subjects. These results suggest that IMF by ultrasonography could be used for evaluation of IMF if relatively larger number of subjects.