Patent ID: 11860258
Assignee: UNIVERSITY OF VIRGINIA PATENT FOUNDATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method for turbo spin-echo (TSE) imaging of a subject, the method implemented by one or more computing devices and comprising:
generating a radio frequency (RF) excitation pulse to produce transverse magnetization that generates a nuclear magnetic resonance (NMR) signal and a series of RF refocusing pulses to produce a corresponding series of NMR spin-echo signals;
modifying an original encoding gradient waveform comprising a non-rectilinear encoding trajectory by:
introducing at least one zero zeroth-moment waveform segment comprising two bipolar pairs at one or both ends of the original encoding gradient waveform; and
reversing a polarity of one of the two bipolar pairs for one of a first gradient axis or a second gradient axis different from the first gradient axis;

generating during an interval adjacent to each of the series of RF refocusing pulses a first gradient pulse and a second gradient pulse, wherein:
at least one of the first or second gradient pulses is generated according to the modified gradient waveform; and
the first and second gradient pulses encode the NMR spin-echo signals corresponding to the first gradient axis and the second gradient axis, respectively; and

constructing an image from generated digitized samples of the NMR spin-echo signals obtained based on the encoding.