Magnetic resonance imaging method involving sub-sampling
AssigneeKoninklijke Philips Electronics N.V.
InventorsJohan Samuel Van Den Brink, Julius Simon Cohen
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Abstract
A magnetic resonance imaging system is provided with a system of emission antennas,: for example, emission coils, for generating RF excitation pulses. The RF excitation pulses generate magnetic resonance signals from an object to be examined. The system of emission antennas has a spatially inhomogeneous emission profile. The inhomogeneous emission profile is used for the partial spatial encoding of the magnetic resonance signals in addition to the encoding on the basis of magnetic gradient fields. The magnetic resonance image is reconstructed on the basis of the inhomogeneous emission profile
Claims20
A magnetic resonance imaging system, comprising:
- a system of emission antennas for generating one or more RF excitation pulses, said system of emission antennas having a spatially inhomogeneous emission profile,
- a system of receiving antennas for receiving magnetic resonance signals, and
- a reconstruction unit coupled to said system of receiving antennas and arranged to reconstruct a magnetic resonance image from the magnetic resonance signals received by said system of receiving antennas, said reconstruction unit being arranged to remove the effect of the spatially inhomogeneous emission profile of said system of emission antennas on the magnetic resonance signals.
A magnetic resonance imaging system, comprising:
- a plurality of emission antennas for generating one or more RF excitation pulses, said plurality of emission antennas having a spatially inhomogeneous emission profile,
- a system of receiving antennas for receiving magnetic resonance signals, and
- a reconstruction unit coupled to said system of receiving antennas for reconstructing a magnetic resonance image from the magnetic resonance signals received by said system of receiving antennas in consideration of the spatially inhomogeneous emission profile of said emission antennas.
A method for performing magnetic resonance imaging, comprising:
- generating a steady homogenous magnetic field by means of a system of main coils;
- generating one or more RF excitation pulses in the examination space by means of a system of emission antennas such that the emission antennas provide a spatially inhomogeneous emission profile;
- receiving magnetic resonance signals by means of a system of receiving antennas;
- and
- reconstructing a magnetic resonance image from the received magnetic resonance signals by removing the effect of the spatially inhomogeneous emission profile of the system of emission antennas on the magnetic resonance signals.
Dependencies are inferred from the claim text.