Method for operating a magnetic resonance device for producing a magnetic resonance spectrum
AssigneeSiemens Aktiengesellschaft
InventorOliver Heid
Life of this patent
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Abstract
In a method for operating a magnetic resonance device, a magnetic resonance signal is recorded over a span of time, and in order to produce a magnetic resonance spectrum, the magnetic resonance signal in the time domain is subjected to a Fourier transformation. The magnetic resonance signal is weighted with a bell-shaped window function before the Fourier transformation, thereby preventing broadening of resonance lines in the displayed frequency spectrum, so that non-dominant resonance lines, such as those associated with the metabolites, can be more readily analyzed.
Claims18
A method for operating a magnetic resonance apparatus, comprising the steps of:
- recording a magnetic resonance signal for a time span comprised of a plurality of time segments and thereby receiving a recorded magnetic resonance signal having a signal segment respectively in each of said time segments;
- after receiving said recorded magnetic resonance signal, weighting said recorded magnetic resonance signal with a bell-shaped window function to obtain a weighted magnetic resonance signal;
- Fourier transforming said weighted magnetic resonance signal only after said weighting, to produce a magnetic resonance spectrum;
- weighting at least one of said magnetic resonance signal segments respectively recorded in at least one of said time segments with an additional bell-shaped window function having a window width that is approximately equal to, and disposed within, said at least one of said time segments, to obtain an additionally-weighted segment of said magnetic resonance signal;
- and
- subjecting said additionally-weighted segment of magnetic resonance signal to an additional Fourier transformation, to make at least one non-dominant resonant line in said magnetic resonance signal more precise.
Dependencies are inferred from the claim text.