Improved gradient-echo 3D magnetic resonance imaging using pseudo-echoes created by frequency-swept pulses

Frequency‐swept pulses are not typically employed to excite spins in NMR. When used for selective excitation in MRI, such pulses do not produce a proper echo because the phase of the transverse magnetization varies in a quadratic manner across the slice or slab. Previously, frequency‐swept pulses su...

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