Automated determination of the resonance frequencies of protons for magnetic resonance examinations
AssigneeSiemens Aktiengesellschaft
InventorSwen Campagna
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Abstract
In a method and a magnetic resonance (MR) system for automated determination of the resonance frequency of a nucleus for magnetic resonance examinations, at least one MR signal is detected, and is Fourier-transformed into a spectrum composed of elements that can be represented as a vector. An analysis of the spectrum is conducted, wherein at least two cross-correlation coefficients of at least one model spectrum are determined by use of the measured spectrum. Prior to the analysis, a spectrum matrix having at least two vectors is determined from the spectrum, with each vector of the spectrum matrix being formed using all or some of the spectrum.
Claims15
A method for automated determination of the resonance frequency or resonance frequencies of an atomic nucleus for magnetic resonance examinations, comprising:
- operating a magnetic resonance data acquisition apparatus to acquire at least one magnetic resonance signal;
- providing said at least one magnetic resonance signal to a computer and, in said computer, Fourier-transforming said at least one signal into a spectrum comprised of elements that can be represented as a vector;
- in said computer, generating a spectrum matrix comprising at least two vectors determined from said spectrum, each of said at least two vectors being formed using at least a portion of said spectrum;
- in said computer, automatically analyzing said spectrum using said spectrum matrix, and deriving at least two cross-correlation coefficients therefrom for a model spectrum;
- and
- making said model spectrum available in electronic form at an output of said computer.
A magnetic resonance apparatus comprising:
- a magnetic resonance data acquisition unit;
- operating a magnetic resonance data acquisition apparatus to acquire at least one magnetic resonance signal;
- a computer provided with said at least one magnetic resonance signal, said computer being configured to Fourier-transform said at least one signal into a spectrum comprised of elements that can be represented as a vector;
- said computer being configured to generate a spectrum matrix comprising at least two vectors determined from said spectrum, each of said at least two vectors being formed using at least a portion of said spectrum;
- said computer being configured to automatically analyze said spectrum using said spectrum matrix, and to derive at least two cross-correlation coefficients therefrom for a model spectrum;
- and
- said computer being configured to make said model spectrum available in electronic form at an output of said computer.
Dependencies are inferred from the claim text.