FREQUENCY SWEPT EXCITATION FOR MAGNETIC RESONANCE
First Claim
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1. 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; and
acquiring a time domain signal during the duration, the time domain signal being based on evolution of the isochromats.
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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.
40 Citations
24 Claims
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1. A method comprising:
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applying a sweeping frequency excitation having a duration, the sweeping frequency excitation being configured to sequentially excite isochromats having different resonant frequencies; and
acquiring a time domain signal during the duration, the time domain signal being based on evolution of the isochromats. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method comprising:
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exciting a specimen with a sweeping frequency excitation having a plurality of alternating excitation segments and quiescent segments, the excitation segments modulated according to at least one of a phase modulation function and a frequency modulation function;
acquiring a time domain signal from the specimen based on resonance during a plurality of the quiescent segments; and
processing the acquired time domain signal. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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Specification