Journal article
17O-decoupled 1H detection using a double-tuned coil
Magnetic resonance imaging, Vol.14(9), pp.1073-1078
1996
DOI: 10.1016/S0730-725X(96)00227-5
PMID: 9070998
Abstract
17O-decoupled proton MR spectroscopy and imaging with a double-tuned radiofrequency (RF) coil at 2 T was used to detect and quantify H
2
17O in tissue phantoms containing various concentrations of
17O-enriched water in 5% gelatin. The pulse sequence used in these experiments consisted of a conventional proton spinecho sequence with RF irradiation at the
17O resonance frequency applied between the proton 90° pulse and the signal acquisition window. The double-tuned coil provided several advantages over systems using separate RF coils for
17O decoupling and proton excitation/detection, including ensuring that the same (or similar) sample volumes are excited and decoupled and permitting accurate calibration of the
17O decoupling pulse amplitude. The efficiency of
17O decoupling as a function of decoupling RF amplitude, decoupling duration, and decoupling resonance offset was investigated. Finally, the specific absorption rate of the
17O decoupled pulse sequence was investigated and found to lie within federal guidelines at 1.5 T.
Details
- Title: Subtitle
- 17O-decoupled 1H detection using a double-tuned coil
- Creators
- Ravinder ReddyAlan H StolpenSridhar R CharagundlaE.K InskoJohn S Leigh
- Resource Type
- Journal article
- Publication Details
- Magnetic resonance imaging, Vol.14(9), pp.1073-1078
- DOI
- 10.1016/S0730-725X(96)00227-5
- PMID
- 9070998
- NLM abbreviation
- Magn Reson Imaging
- ISSN
- 0730-725X
- eISSN
- 1873-5894
- Publisher
- Elsevier Inc
- Language
- English
- Date published
- 1996
- Academic Unit
- Radiology; Internal Medicine
- Record Identifier
- 9984051989102771
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