12-09-2019 дата публикации
Номер: WO2019169671A1
Автор:
WANG, Chao,
LUO, Hai,
WU, Ziyue,
ZHU, Gaojie,
ZHOU, Xiang,
CHEN, Meining,
LIU, Xia
Принадлежит:
A fat-suppressed black-blood magnetic resonance imaging method, comprising: emitting a excitation signal, the excitation signal comprising: a sequence of 90°x, 180°y, and 90°x radio frequency pulses, two motion-sensitive gradient magnetic fields (1) that are the same, and a de-noising gradient magnetic field (2); applying one motion-sensitive gradient magnetic field between a first 90°x pulse and the 180°y pulse, and applying the other motion-sensitive gradient magnetic field between the 180°y pulse and a second 90°x pulse; applying the two motion-sensitive gradient magnetic fields symmetrically with the 180°y pulse; applying the de-noising gradient magnetic field after the sequence of the 90°x, 180°y, and 90°x radio frequency pulses; setting, to a signal zero point of adipose tissue, a delay after the sequence of the 90°x, 180°y, and 90°x radio frequency pulses; and collecting electromagnetic wave signals. The described method may reduce sensitivity to the magnetic field non-uniformity ...
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