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US 2003/0069495 A1Published application
Apparatus and method for magnetic resonance imaging employing partially parallel acquisition
AssigneeSiemens Aktiengesellschaft
InventorJuergen Agrikola
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Abstract
In a magnetic resonance tomography apparatus and a method for operating such an apparatus employing a “partially parallel acquisition” (PPA), the number of the k-rows to be determined in a readout cycle corresponds to the number of coils, so that exposure time for acquiring an MR image is shortened for a given image quality, or the image quality is enhanced for a given exposure time.
Claims11
A method for magnetic resonance imaging comprising the steps of:
- (a) exciting nuclear spins in an interconnected region of a subject, and thereby causing radio frequency response signals to be emitted from said region;
- (b) receiving said radio frequency response signals simultaneously with each of a plurality of component coils, each of said component coils having a characteristic sensitivity over said region defined for at least one spin excitation, and thereby obtaining a plurality of received radio frequency response signals;
- (c) forming a plurality of different signal combinations from said plurality of received radio frequency response signals depended on combinations of the respective characteristic sensitivities of said component coils;
- (d) forming an ordered dataset from said signal combinations of at least one spin excitation;
- and
- (e) spatially transforming said ordered dataset to generate a magnetic resonance image of said region.
3 more elements
An apparatus for magnetic resonance imaging comprising:
- an examination unit adapted to receive a subject and having an RF antenna for exciting nuclear spins in an interconnected region of said subject, and thereby causing radio frequency response signals to be emitted from said region;
- said RF antenna having a plurality of component coils for simultaneously receiving said radio frequency response signals, each of said component coils having a characteristic sensitivity over said region defined for at least one spin excitation, and thereby obtaining a plurality of received radio frequency response signals;
- an image computer for forming a plurality of different signal combinations from said plurality of received radio frequency response signals depended on combinations of the respective characteristic sensitivities of said component coils, for forming an ordered dataset from said signal combinations of at least one spin excitation, and for spatially transforming said ordered dataset to generate a magnetic resonance image of said region.
Dependencies are inferred from the claim text.