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US 7,403,006 B2Granted
Frequency swept excitation for magnetic resonance
AssigneeRegents of the University of Minnesota
InventorsMichael Garwood, Djaudat S. Idiyatullin
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Abstract
A method of magnetic resonance is provided that uses a frequency swept excitation wherein the acquired signal is a time domain signal is provided. In one embodiment, the sweeping frequency excitation has a duration and is configured to sequentially excite isochromats having different resonant frequencies. Acquisition of the time domain signal is done during the duration of the sweeping frequency excitation. The time domain signal is based on evolution of the isochromats.
Claims16
A method comprising:
- applying a sweeping frequency excitation having a duration, the sweeping frequency excitation being configured to sequentially excite isochromats having different resonant frequencies;
- acquiring a time domain signal during the duration, the time domain signal being based on evolution of the isochromats;
- and
- using the acquired time domain signal to create a magnetic resonance image.
1 more element
A method comprising:
- applying a sweeping frequency excitation having a duration, the sweeping frequency excitation being configured to sequentially excite isochromats having different resonant frequencies, wherein applying the sweeping frequency excitation includes applying a plurality of discrete excitation pulses;
- acquiring a time domain signal during the duration, the time domain signal being based on evolution of the isochromats, wherein acquiring the time domain signal includes sampling between excitation pulses;
- and
- using the acquired time domain signal to create a magnetic resonance image.
1 more element
Dependencies are inferred from the claim text.