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
Proton MR spectroscopy in quantitative in vivo determination of fat content in human liver steatosis
β Scribed by Renata Longo; Piero Pollesello; Claudio Ricci; Flora Masutti; Bjarne J. Kvam; Luisa Bercich; Lory S. Croce; Piergiovanni Grigolato; Sergio Paoletti; Benedetto De Bernard; Claudio Tiribelli; Ludovico Dalla Palma
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 516 KB
- Volume
- 5
- Category
- Article
- ISSN
- 1053-1807
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β¦ Synopsis
To demonstrate that the lipid volume fraction in liver steatosis can be accurately estimated with in vivo hydrogen-1 magnetic resonance (MR] spectroscopy, the authors developed a calibration pro- cedure based on in vitro h ΒΆR spectroscopy of lipid extracts from steatotic liver specimens. The lipid volume fractions determined with the calibration procedure were compared with the results of histomorphometry and with calibrated computed tomographic (CT) data. The volume fraction of fat determined with M R spectroscopy was in good agreement with the CT results. whereas histomorphometry underestimated the amount of hepatic fat. The results indicate that determination of the fat volume fraction in steatoth liver can be achieved noninvasively with MR Spectroscopy.
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Results are reported on in vivo volume localized proton magnetic resonance spectroscopy (MRS) of patients (n = 44) suffering from carcinoma of the breast, using a bilateral breast surface coil. Localized proton MR spectra of the unaffected contralateral breast of these patients are dominated by reso