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公开(公告)号:US07417428B2
公开(公告)日:2008-08-26
申请号:US10554354
申请日:2004-04-22
申请人: Frank Gerardus Cornelis Hoogenraad , Arianne Margarethe Corinne Van Muiswinkel , Ronaldus Frederik Johannes Holthuizen , Johan Samuel Van Den Brink
发明人: Frank Gerardus Cornelis Hoogenraad , Arianne Margarethe Corinne Van Muiswinkel , Ronaldus Frederik Johannes Holthuizen , Johan Samuel Van Den Brink
IPC分类号: G01V3/00
CPC分类号: G01R33/56341 , G01R33/4806
摘要: A method of deriving a directional structure from an object dataset is proposed. The object dataset assigns local directions to positions in a multidimensional geometrical space. For example the local directions concern local flow directions in a diffusion tensor magnetic resonance image at least one ‘region of interest’ is selected on the basis of spatial functional information, such as an fMRI image, time correlation of an fMRI image series with a functional paradigm or an anatomical image. These ‘region of interest’ are employed to initialize a fibre tracking to derive the directional structure that represents the nervous fibre system.
摘要翻译: 提出了从对象数据集导出定向结构的方法。 对象数据集将本地方向分配给多维几何空间中的位置。 例如,局部方向涉及扩散张量磁共振图像中的局部流动方向,基于空间功能信息来选择至少一个“感兴趣区域”,例如fMRI图像,fMRI图像序列与功能性的时间相关性 范式或解剖图像。 这些“感兴趣的区域”用于初始化光纤跟踪以导出代表神经纤维系统的定向结构。
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公开(公告)号:US06518760B2
公开(公告)日:2003-02-11
申请号:US09918160
申请日:2001-07-30
申请人: Miha Fuderer , Johan Samuel Van Den Brink , Michel Paul Jurriaan Jurrissen , Arianne Margarethe Corinne Van Muiswinkel , Ulrich Katscher
发明人: Miha Fuderer , Johan Samuel Van Den Brink , Michel Paul Jurriaan Jurrissen , Arianne Margarethe Corinne Van Muiswinkel , Ulrich Katscher
IPC分类号: G01V300
CPC分类号: G01R33/5611 , G01R33/4835
摘要: A magnetic resonance imaging method employs sub-sampled signal acquisition from a number of receiver coils such as surface coils. A full field-of-view magnetic resonance image is reconstructed on the basis of the sensitivity profiles of the receiver coils, for example on the basis of the SENSE technique. The reconstruction is carried out mathematically as an optimization, for example, requiring a minimum noise level in the magnetic resonance image. According to the invention, a priori information is also involved in the reconstruction and the a priori information is taken into account especially as a constraint in optimization.
摘要翻译: 磁共振成像方法采用来自多个接收线圈(例如表面线圈)的子采样信号采集。 基于接收器线圈的灵敏度分布,例如基于SENSE技术,重建完整的视场磁共振图像。 重建在数学上进行为优化,例如要求磁共振图像中的最小噪声电平。 根据本发明,先验信息也涉及重建,并且先验信息被特别地考虑在优化中作为约束。
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公开(公告)号:US06377045B1
公开(公告)日:2002-04-23
申请号:US09572994
申请日:2000-05-17
申请人: Johan Samuel Van Den Brink , Rudolf Mathias Johannes Nicolaas Lamerichs , Paulus Johannes Maria Folkers , Arianne Margarethe Corinne Van Muiswinkel , Klaas Paul Pruessmann , Markus Weiger , Ulrike Dydak
发明人: Johan Samuel Van Den Brink , Rudolf Mathias Johannes Nicolaas Lamerichs , Paulus Johannes Maria Folkers , Arianne Margarethe Corinne Van Muiswinkel , Klaas Paul Pruessmann , Markus Weiger , Ulrike Dydak
IPC分类号: G01V300
CPC分类号: G01R33/4822 , G01R33/485 , G01R33/5611
摘要: A spectroscopic magnetic resonance imaging method involves sub-sampling in the k space. For example, the SENSE technique is applied in spectroscopic MR imaging. Such sub-sampling is also applied in three-dimensional MR imaging.
摘要翻译: 光谱磁共振成像方法涉及在k空间中的二次采样。 例如,SENSE技术应用于光谱MR成像。 这种次采样也应用于三维MR成像。
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