High-resolution NMR in inhomogeneous magnetic fields

1976 ◽  
Vol 24 (2) ◽  
pp. 291-294 ◽  
Author(s):  
Geoffrey Bodenhausen ◽  
Ray Freeman ◽  
Reinhard Niedermeyer ◽  
David L Turner

The success in clinical practice of magnetic resonance imaging (MRI) is a result of the symbiosis of the science of NMR with the computer and the availability of appropriate magnetic fields. A brief survey with some history is presented of NMR phenomena which are basic to the interpretation of MRI signals. Special exotic effects or procedures, such as stochastic NMR and line narrowing techniques of high-resolution NMR spectroscopy have a potential to play a role in future MRI systems.


2008 ◽  
Vol 17 (11) ◽  
pp. 1835-1839 ◽  
Author(s):  
M. Murakami ◽  
T. Shimizu ◽  
M. Tansho ◽  
Y. Takano ◽  
S. Ishii ◽  
...  

Science ◽  
2009 ◽  
Vol 324 (5935) ◽  
pp. 1693-1697 ◽  
Author(s):  
P. Pelupessy ◽  
E. Rennella ◽  
G. Bodenhausen

Author(s):  
P. A. Marsh ◽  
T. Mullens ◽  
D. Price

It is possible to exceed the guaranteed resolution on most electron microscopes by careful attention to microscope parameters essential for high resolution work. While our experience is related to a Philips EM-200, we hope that some of these comments will apply to all electron microscopes.The first considerations are vibration and magnetic fields. These are usually measured at the pre-installation survey and must be within specifications. It has been our experience, however, that these factors can be greatly influenced by the new facilities and therefore must be rechecked after the installation is completed. The relationship between the resolving power of an EM-200 and the maximum tolerable low frequency interference fields in milli-Oerstedt is 10 Å - 1.9, 8 Å - 1.4, 6 Å - 0.8.


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