NMR at very high fields
نویسندگان
چکیده
منابع مشابه
In vivo NMR of hyperpolarized 3He in the human lung at very low magnetic fields.
We present NMR measurements of the diffusion of hyperpolarized 3He in the human lung performed at fields much lower than those of conventional MRI scanners. The measurements were made on standing subjects using homebuilt apparatus operating at 3mT. O(2)-limited transverse relaxation (T(2) up to 15-35s) could be measured in vivo. Accurate global diffusion measurements have been performed in vivo...
متن کاملIn-Vivo NMR of Hyperpolarized He in the Human Lung at Very Low Magnetic Fields
We present NMR measurements of the diffusion of hyperpolarized 3He in the human lung performed at fields much lower than those of conventional MRI scanners. The measurements were made on standing subjects using homebuilt apparatus operating at 3 mT. O2-limited transverse relaxation (T2 up to 15-35 s) could be measured in-vivo. Accurate global diffusion measurements have been performed in-vivo a...
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Low temperature physicists have employed magnetic resonance techniques to study the fundamental properties of materials at very low temperatures from the earliest days following the discovery of NMR. Many of the familiar degrees of freedom such as phonons and vacancy propagation are frozen out at temperatures below a few degrees Kelvin and magnetic resonance provides one of the most powerful me...
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Most in vivo 13C NMR spectroscopy studies in the brain have been performed using 1H decoupling during acquisition. Decoupling imposes significant constraints on the experimental setup (particularly for human studies at high magnetic field) in order to stay within safety limits for power deposition. We show here that incorporation of the 13C label from 13C-labeled glucose into brain amino acids ...
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ژورنال
عنوان ژورنال: Structure
سال: 1994
ISSN: 0969-2126
DOI: 10.1016/s0969-2126(00)00027-7