-
1.发明授权Functional magnetic resonance imaging by spatially modulating steady-state signal in steady-state free precession 有权通过在稳态自由进动中空间调制稳态信号进行功能磁共振成像公开(公告)号：US09551770B1
公开(公告)日：2017-01-24
申请号：US14164133
申请日：2014-01-24
IPC分类号： G01R33/48
CPC分类号： G01R33/5613 , G01R33/4806
摘要： A modified steady-state free-precession (SSFP) method for functional magnetic resonance imaging (fMRI) is disclosed for acquiring a complex-valued image of object. A modulating field gradient is applied to impart spatial modulation of the steady-state signal phase and magnitude across the complex-valued image of the object along the direction of the modulating field gradient. SSFP pulse sequence parameters and modulating field gradient parameters can be selected to optimize functional image contrast between, e.g., oxy- and deoxy-hemoglobin, derived from steady-state signal magnitude or phase of complex-valued images.
摘要翻译： 公开了用于获取物体的复值图像的功能磁共振成像（fMRI）的改进的稳态自由进动（SSFP）方法。 应用调制场梯度以沿着调制场梯度的方向对物体的复值图像赋予稳态信号相位和幅度的空间调制。 可以选择SSFP脉冲序列参数和调制场梯度参数以优化衍生自复数值图像的稳态信号幅度或相位的例如氧 - 和脱氧血红蛋白之间的功能图像对比度。
-
2.发明申请公开(公告)号：US20160071290A1
公开(公告)日：2016-03-10
申请号：US14944214
申请日：2015-11-18
CPC分类号： G01R33/56333 , G01R33/4824
摘要： A method for tagged magnetic resonance imaging is disclosed. The method includes steps of tagging an object with polar tagging patterns; acquiring data in a spatial frequency domain of the tagged object with a polar sampling pattern; and reconstructing an image of the object through a polar Fourier transform of the data acquired in the step of acquiring data.
摘要翻译： 公开了一种用于标记磁共振成像的方法。 该方法包括以极性标记模式标记对象的步骤; 以极性采样模式获取标记物体的空间频域中的数据; 以及通过在获取数据的步骤中获取的数据的极坐标傅里叶变换来重建对象的图像。
-
3.发明授权公开(公告)号：US10228435B2
公开(公告)日：2019-03-12
申请号：US15797291
申请日：2017-10-30
IPC分类号： G01R33/56 , G01R33/563 , G01R33/48
摘要： A method for tagged magnetic resonance imaging is disclosed. The method includes steps of tagging an object with polar tagging patterns; acquiring data in a spatial frequency domain of the tagged object with a polar sampling pattern; and reconstructing an image of the object through a polar Fourier transform of the data acquired in the step of acquiring data.
-
4.发明申请Method for obtaining strain from radially-tagged magnetic resonance imaging (MRI) 有权从径向标记的磁共振成像（MRI）获得应变的方法公开(公告)号：US20080009704A1
公开(公告)日：2008-01-10
申请号：US11810806
申请日：2007-06-06
IPC分类号： A61B5/05
CPC分类号： G01R33/56333
摘要： The present invention relates to a system for obtaining strain corresponding to an object's deformation by radially-tagged magnetic resonance imaging (MRI). The system acquires at least a ring-shaped crown region of Fourier domain (k-space) data for at least two sequential images of a radially-tagged object at different phases of deformation of the radially-tagged object. A first image represents a primary state of the radially-tagged object and a second image represents a secondary state of the radially-tagged object. Additionally, the images include radial tag lines. The first and second images are reconstructed as a reconstructed primary-state image and a reconstructed secondary-state image. The images are reconstructed as weighted by circumferential density of the radial tag lines, such that they are “tag line density-weighted” reconstructed images. Circumferential strain of the radially-tagged object is determined by comparing the two images.
摘要翻译： 本发明涉及通过径向标记的磁共振成像（MRI）获得对应于物体的变形的应变的系统。 该系统在径向标记物体的不同变形阶段获取至少两个具有径向标记物体的连续图像的傅立叶域（k-空间）数据的环形冠部区域。 第一图像表示径向标记对象的主状态，第二图像表示径向标记对象的次状态。 另外，图像包括径向标签线。 第一和第二图像被重建为重建的主状态图像和重建的次状态图像。 通过径向标签线的圆周密度来重建图像，使得它们是“标签线密度加权”重建图像。 通过比较两个图像来确定径向标记物体的周向应变。
-
5.发明申请公开(公告)号：US20180052214A1
公开(公告)日：2018-02-22
申请号：US15797291
申请日：2017-10-30
IPC分类号： G01R33/563 , G01R33/48
CPC分类号： G01R33/56333 , G01R33/4824
摘要： A method for tagged magnetic resonance imaging is disclosed. The method includes steps of tagging an object with polar tagging patterns; acquiring data in a spatial frequency domain of the tagged object with a polar sampling pattern; and reconstructing an image of the object through a polar Fourier transform of the data acquired in the step of acquiring data.
-
6.发明授权公开(公告)号：US09835708B2
公开(公告)日：2017-12-05
申请号：US14944214
申请日：2015-11-18
IPC分类号： G01R33/48 , G01R33/563
CPC分类号： G01R33/56333 , G01R33/4824
摘要： A method for tagged magnetic resonance imaging is disclosed. The method includes steps of tagging an object with polar tagging patterns; acquiring data in a spatial frequency domain of the tagged object with a polar sampling pattern; and reconstructing an image of the object through a polar Fourier transform of the data acquired in the step of acquiring data.
-
7.发明授权Method for obtaining strain from radially-tagged magnetic resonance imaging (MRI) 有权从径向标记的磁共振成像（MRI）获得应变的方法公开(公告)号：US08073523B2
公开(公告)日：2011-12-06
申请号：US11810806
申请日：2007-06-06
IPC分类号： A61B5/055
CPC分类号： G01R33/56333
摘要： The present invention relates to a system for obtaining strain corresponding to an object's deformation by radially-tagged magnetic resonance imaging (MRI). The system acquires at least a ring-shaped crown region of Fourier domain (k-space) data for at least two sequential images of a radially-tagged object at different phases of deformation of the radially-tagged object. A first image represents a primary state of the radially-tagged object and a second image represents a secondary state of the radially-tagged object. Additionally, the images include radial tag lines. The first and second images are reconstructed as a reconstructed primary-state image and a reconstructed secondary-state image. The images are reconstructed as weighted by circumferential density of the radial tag lines, such that they are “tag line density-weighted” reconstructed images. Circumferential strain of the radially-tagged object is determined by comparing the two images.
摘要翻译： 本发明涉及通过径向标记的磁共振成像（MRI）获得对应于物体的变形的应变的系统。 该系统在径向标记物体的不同变形阶段获取至少两个具有径向标记物体的连续图像的傅立叶域（k-空间）数据的环形冠部区域。 第一图像表示径向标记对象的主状态，第二图像表示径向标记对象的次状态。 另外，图像包括径向标签线。 第一和第二图像被重建为重建的主状态图像和重建的次状态图像。 通过径向标签线的圆周密度来重建图像，使得它们是“标签线密度加权”重建图像。 通过比较两个图像来确定径向标记物体的周向应变。
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.014 秒)
