Magnetic resonance method and system to detect interference signals in magnetic resonance spectroscopy signals
AssigneeSiemens Aktiengesellschaft
InventorElisabeth Weiland
Life of this patent
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Abstract
In a method and device to detect interference signals in magnetic resonance spectroscopy signals a comparison signal is computationally reconstructed that optimally approximates a measured, detected magnetic resonance spectroscopy signal. The comparison signal forms spectral components of resonance lines of the measured magnetic resonance spectroscopy signal. A residual is calculated from the difference of the two signals (comparison signal and magnetic resonance spectroscopy signal) in the frequency representation. The interference signals are determined from the residual.
Claims18
A method to detect interference signals in a magnetic resonance spectroscopy signal, comprising:
- providing a processor with at least one magnetic resonance spectroscopy signal, which contains interference signals, to a processor and, in said processor, reconstructing a comparison signal from said magnetic resonance spectroscopy signal that approximates said magnetic resonance spectroscopy signal and recreates spectral components of resonance lines in said magnetic resonance spectroscopy signal;
- in said processor, calculating a residual of a difference between said magnetic resonance spectroscopy signal and said comparison signal in frequency representation;
- and
- from the frequency representation of said residual, determining said interference signals.
A device to detect interference signals in a magnetic resonance spectroscopy signal, comprising:
- an importation unit provided with at least one magnetic resonance spectroscopy signal, which contains interference signals;
- a reconstruction unit configured to reconstruct a comparison signal from said magnetic resonance spectroscopy signal that approximates said magnetic resonance spectroscopy signal and recreates spectral components of resonance lines in said magnetic resonance spectroscopy signal;
- a processor configured to calculate a residual of a difference between said magnetic resonance spectroscopy signal and said comparison signal in frequency representation;
- and
- an analysis unit configured to determine the frequency representation of said residual, said interference signals.
A non-transitory, computer-readable data storage medium encoded with programming instructions, said data storage medium being loaded into a computerized processor that is provided with at least one magnetic resonance spectroscopy signal containing interference signals, and said programming instructions causing said computerized processor to:
- reconstruct a comparison signal from said magnetic resonance spectroscopy signal that approximates said magnetic resonance spectroscopy signal and recreates spectral components of resonance lines in said magnetic resonance spectroscopy signal;
- calculate a residual of a difference between said magnetic resonance spectroscopy signal and said comparison signal in frequency representation;
- and
- from the frequency representation of said residual, determine said interference signals.
Dependencies are inferred from the claim text.