Magnetic resonance sequence with free excitation pulse and form-bound refocusing pulses
OwnerJürgen Herrlerinventor
Life of this patent
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Abstract
Systems and methods for provision of a magnetic resonance sequence. In a method, a magnetic field distribution dataset is provided. An excitation pulse is established that includes an excitation pulse shape. The excitation pulse shape is established as a function of the magnetic field distribution dataset. A refocusing pulse shape is further predetermined. At least one refocusing pulse is established, which has the predetermined refocusing pulse shape. The magnetic resonance sequence, which includes the excitation pulse and the at least one refocusing pulse may be provided in the form of a sequence dataset.
Claims18
A computer-implemented method for providing a magnetic resonance sequence, the method comprising:
- acquiring a magnetic field distribution dataset;
- determining a refocusing pulse shape;
- computing an excitation pulse that has an excitation pulse shape, wherein the excitation pulse shape is computed as a function of the magnetic field distribution dataset;
- computing of at least one refocusing pulse that has the predetermined refocusing pulse shape;
- and
- providing the magnetic resonance sequence with the excitation pulse and the at least one refocusing pulse.
A system comprising:
- a magnetic resonance apparatus configured to acquire a magnetic field distribution dataset;
- and
- a control unit configured to determine a refocusing pulse shape, compute an excitation pulse that has an excitation pulse shape, wherein the excitation pulse shape is computed as a function of the magnetic field distribution dataset, and compute of at least one refocusing pulse that includes the predetermined refocusing pulse shape, and provide the magnetic resonance sequence with the excitation pulse and the at least one refocusing pulse to the magnetic resonance apparatus.
A non-transitory computer readable storage medium comprising a set of computer-readable instructions stored thereon, the computer-readable instructions that, when executed by a system control unit of the magnetic resonance apparatus cause the system control unit to:
- acquire a magnetic field distribution dataset;
- determine a refocusing pulse shape;
- compute an excitation pulse that has an excitation pulse shape, wherein the excitation pulse shape is computed as a function of the magnetic field distribution dataset;
- compute of at least one refocusing pulse that includes the predetermined refocusing pulse shape;
- and
- provide the magnetic resonance sequence with the excitation pulse and the at least one refocusing pulse.
Dependencies are inferred from the claim text.