ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
The coil sensitivity for nuclear magnetic resonance (NMR) signal detection can be defined as B1/P, which represents the magnetic field that the coil induces per unit supplied power. An inductive probe was previously proposed to quickly evaluate the sensitivity of a tuned NMR coil. As this probe uses two loops, decoupled by means of a slight overlapping, it is not applicable to small NMR coils since the decoupling efficiency is limited by the loop dimensions. We present a new method, derived from the former, which uses a single-loop probe and allows accurate sensitivity mapping even for very small NMR coils. This new method proves to be in good agreement with both the theoretical formula and a reference method for assessing a simple coil's sensitivity. We conclude that it is both reliable and particularly convenient for development and optimization of small coils for surface MR imaging. © 1999 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1150142
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