H MR spectra were recorded from human gastrocnemius muscle at 63.86 MHz using the body coil of the Signa scanner as transmitter and a 3-in. surface coil as receiver. The fat content of the muscle was quantified relative to that of water in a selected volume or slice. The fat/water ratio was 0.05-0.0
Quantitation of phosphate metabolites in human leg in vivo
✍ Scribed by P. N. Venkatasubramanian; M. F. Mafee; M. Bárány
- Publisher
- John Wiley and Sons
- Year
- 1988
- Tongue
- English
- Weight
- 309 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0740-3194
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✦ Synopsis
Slice-selective 31P MR spectra were recorded from human legs with a pulse program which has only a 1.5-ms delay between excitation and acquisition. The volume of the slice was calculated from its thickness and cross-sectional area measured with the aid of a computer program. A phosphate reference standard spectrum was recorded from the same interplanar location as that of the human leg slice. Since signal integral is proportional to the phosphate concentration and to the volume of the slice, metabolite concentrations in the selected slice could be quantitated.
📜 SIMILAR VOLUMES
The difference in concentration of phosphorylated metabolites in muscles with different fiber composition was studied in vivo by localized 31P nuclear magnetic resonance spectroscopy in the rat hindlimb. 120-160 pl volumes were selected in regions containing the soleus and gastrocnemius muscles. Con