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公开(公告)号:US11187768B2
公开(公告)日:2021-11-30
申请号:US16500515
申请日:2018-04-06
发明人: Rui Pedro Azeredo Gomes Teixeira , Joseph Vilmos Hajnal , Shaihan Jalal Malik , Daniel John West
IPC分类号: G01V3/00 , G01R33/50 , G01R33/483 , G01R33/56 , G01R33/561
摘要: The present invention relate to a system and associate method of MRI and MR spectroscopy which provide stable measurements of the relaxation times, T1 and T2, by using tailored multi-band RF pulses that direct control of the saturation conditions in the background pool of macro-molecular protons, and hence provide a flexible means to induce constant Magnetisation Transfer (MT) effects. In doing this, equal saturation of the background pool is obtained for all measurements independent of the parameters that may be changed, for example, the rotation rate used to obtain a desired flip angle, that is, the degree of change in the magnetisation of the free pool of protons.
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公开(公告)号:US20200057128A1
公开(公告)日:2020-02-20
申请号:US16500515
申请日:2018-04-06
发明人: Rui Pedro Azeredo Gomes Teixeira , Joseph Vilmos Hajnal , Shaihan Jalal Malik , Daniel John West
IPC分类号: G01R33/50 , G01R33/56 , G01R33/561 , G01R33/483
摘要: The present invention relate to a system and associate method of MRI and MR spectroscopy which provide stable measurements of the relaxation times, T1 and T2, by using tailored multi-band RF pulses that direct control of the saturation conditions in the background pool of macro-molecular protons, and hence provide a flexible means to induce constant Magnetisation Transfer (MT) effects. In doing this, equal saturation of the background pool is obtained for all measurements independent of the parameters that may be changed, for example, the rotation rate used to obtain a desired flip angle, that is, the degree of change in the magnetisation of the free pool of protons.
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