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1.发明申请公开(公告)号：US20200205693A1
公开(公告)日：2020-07-02
申请号：US16729799
申请日：2019-12-30
发明人： Yu Yu Wang , De He Weng , Kun Zhou , Le Zhang
IPC分类号： A61B5/055 , G01R33/483
摘要： In a magnetic resonance imaging method, a first adjustment parameter is determined for presetting an initial contrast of a magnetic resonance image; a second adjustment parameter is determined for obtaining an optimized contrast of the magnetic resonance image and a specified data acquisition time of a blade artifact correction sequence; an optimized echo signal evolution curve is determined according to the first adjustment parameter and the second adjustment parameter; an actual variable flip angle train is calculated according to the optimized echo signal evolution curve; and the actual variable flip angle train is applied to a two-dimensional fast spin echo sequence, and the blade artifact correction sequence corresponding to the second adjustment parameter is used to acquire magnetic resonance signals and enable the magnetic resonance image to satisfy the optimized contrast.
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公开(公告)号：US20220057466A1
公开(公告)日：2022-02-24
申请号：US17405475
申请日：2021-08-18
发明人： Yu Yu Wang , Fang Dong
IPC分类号： G01R33/567 , G01R33/561 , G01R33/565 , A61B5/055
摘要： The disclosure relates to magnetic resonance imaging triggered by a prospective acquisition correction sequence. The technique comprises determining repetition time and an acquisition window time of a single-shot fast spin echo sequence; determining the maximum imaging layer number N in each physiological movement cycle on the basis of the acquisition window time and the repetition time, where N is a positive integer greater than or equal to 2; and enabling the single-shot fast spin echo sequence to obtain M layers of imaging data within at least one acquisition window time when the prospective acquisition correction sequence generates a trigger signal, where M is a positive integer greater than or equal to 2 and less than or equal to N. According to the present disclosure, a plurality of layers of imaging data are obtained within a single acquisition window time, thereby increasing a scanning speed and shortening imaging time.
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3.发明授权公开(公告)号：US10667760B2
公开(公告)日：2020-06-02
申请号：US15465976
申请日：2017-03-22
发明人： Jing An , Fang Dong , Zhi Guo Sun , Yu Yu Wang , Qiong Zhang
IPC分类号： A61B5/00 , A61B5/0402 , A61B5/055 , G01R33/563 , G01R33/567
摘要： In a method and magnetic resonance (MR) apparatus for heart diffusion imaging, when an ECG trigger signal by a computer that operates an MR scanner, the MR scanner is operated to acquire a navigator echo before a stimulated echo sequence, in order to detect diaphragm position information. When the first diaphragm position information is not located in an acquisition window, the stimulated echo sequence is not executed, and the computer waits to receive the next ECG trigger signal. The detection time of the navigator echo after the stimulated echo sequence as well as the acquisition time of the stimulated echo sequence, are thus eliminated when the first diaphragm position information does not meet requirements, so can significantly reduce scanning time, and increase the image SNR.
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