ADIABATIC MAGNETIZATION PREPARATION FOR B1 AND B0 INSENSITIVE HIGH CONTRAST MRI
First Claim
Patent Images
1. A system comprising:
- a magnetic resonance scanner; and
a processor coupled to the scanner and configured to provide an excitation sequence to a sample, the excitation sequence including a gapped pulse having swept frequency and swept amplitude, the processor configured to interleave at least one magnetization preparation pulse in the excitation sequence, and configured to acquire spin system data for use in generating an image.
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Abstract
A magnetic resonance image is produced by radial imaging using one or more preparatory pulses. The magnetic preparation pulse can include one or more adiabatic pulses.
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Citations
18 Claims
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1. A system comprising:
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a magnetic resonance scanner; and a processor coupled to the scanner and configured to provide an excitation sequence to a sample, the excitation sequence including a gapped pulse having swept frequency and swept amplitude, the processor configured to interleave at least one magnetization preparation pulse in the excitation sequence, and configured to acquire spin system data for use in generating an image. - View Dependent Claims (2, 3, 4)
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5. A method comprising:
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generating MR data using a sequence of frequency-modulated pulses with repetition time TR that exceeds a pulse length Tp; introducing at least one magnetization preparation pulse in the sequence; and generating an image using the MR data. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. A computer-readable medium having computer-executable instructions stored thereon for performing a method comprising:
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exciting a subject using a sequence of frequency swept pulses; exciting the subject with at least one magnetization preparation pulse; acquiring spin system data during at least one predetermined gap in the pulses; and generating an image using the spin system data. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A computer-readable medium having computer-executable instructions stored thereon for performing a method comprising:
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exciting a subject using a sequence of frequency swept pulses; acquiring first spin system data during at least one predetermined gap in the pulses; generating a first image using the first spin system data; exciting the subject with at least one magnetization preparation pulse interleaved with the sequence; acquiring second spin system data during at least one predetermined gap in the pulses having the interleaved magnetization preparation pulse; generating a second image using the second spin system data; and generating a composite image based on a ratio of the first image and the second image.
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Specification