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US07683618B2 Slice-selective tunable-flip adiabatic low peak power excitation 有权
切片选择性可调谐翻转绝热低峰值功率激励

Slice-selective tunable-flip adiabatic low peak power excitation
Abstract:
A manifestation of the invention provides a method for slice selective excitation for magnetic resonance imaging (MRI). A B0 field is applied. A STABLE pulse comprising of a BIR-4 envelope sampled by a plurality of subpulses with a duration is applied, where amplitude and frequency modulation functions of the BIR-4 envelope are slowly varying with respect to the duration of the subpulses. A portion of k-space is read out to obtain k-space data. The STABLE pulse and readout are repeated until sufficient k-space has been acquired. A Fourier Transform of the k-space data is taken.
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