Nuclear magnetic resonance spectrometer
First Claim
1. Nuclear magnetic resonance spectrometer for investigating biological sample in a volume under examination, said nuclear magnetic resonance spectrometer comprising:
- magnetic coil means for generating a substantially homogeneous magnetic field in the volume under examination;
shim coil means for eliminating local inhomogeneities of the substantially homogeneous field; and
additional electric conductor means, configured and disposed in the volume under examination proximate a sample, for generating an inhomogeneous magnetic field in response to current passing therethrough,in order to at least partially eliminate the local inhomogeneities in a selected area in the sample.
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Accused Products
Abstract
A nuclear magnetic resonance spectrometer, in particular a nuclear spin tomograph serving to investigate biological samples, comprising a magnetic coil for generating a substantially homogeneous magnetic field in a volume under examination, and a set of shim coils for eliminating any remaining inhomogeneities of the magnetic field is characterized in that at least one additional electric conductor, preferably an additional shim coil, is provided which may be arranged in the volume under examination, in the direct vicinity of the sample, that the additional conductor is designed in such a way that it will generate an inhomogeneous magnetic field when loaded with current, and that it can be loaded with currents of a type generating inhomogeneous magnetic fields which will eliminate, at least partially, and in a selected area in the sample, local field inhomogeneities resulting from susceptibility variations within the sample, for example. This enables the accuracy of the spectroscopy results to be improved.
36 Citations
14 Claims
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1. Nuclear magnetic resonance spectrometer for investigating biological sample in a volume under examination, said nuclear magnetic resonance spectrometer comprising:
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magnetic coil means for generating a substantially homogeneous magnetic field in the volume under examination; shim coil means for eliminating local inhomogeneities of the substantially homogeneous field; and additional electric conductor means, configured and disposed in the volume under examination proximate a sample, for generating an inhomogeneous magnetic field in response to current passing therethrough, in order to at least partially eliminate the local inhomogeneities in a selected area in the sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification