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公开(公告)号：EP0100183A2
公开(公告)日：1984-02-08
申请号：EP83304065.2
申请日：1983-07-13
IPC分类号： G01N24/08
CPC分类号： G01R33/485
摘要： A method and apparatus for determining the spatial distribution of the chemical shift spectra of a chosen element across a region of a body. Where the region is a slice, nuclear magnetic resonance for the element is excited preferentially i the slice. First and second pulsed magnetic gradient fields (Gx,Gy) having magnetic field gradients in first and second mutually orthogonal directions in the plane of the slice are applied. The value of the gradient of the first field is stepped through a range of first values, for each of the first values the gradient of the second field being stepped through a range of second values. The free induction decay signal after each set of one first and second field pulses is measured to form a set of free induction decay signals which is subjected to a two dimensional Fourier Transform process with respect to the first and second directions, and to an additional Fourier Transform process with respect to time to obtain chemical shift spectra for the element at each of a plurality of different locations in the slice.
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公开(公告)号：EP0100183A3
公开(公告)日：1985-01-09
申请号：EP83304065
申请日：1983-07-13
IPC分类号： G01N24/08
CPC分类号： G01R33/485
摘要： A method and apparatus for determining the spatial distribution of the chemical shift spectra of a chosen element across a region of a body. Where the region is a slice, nuclear magnetic resonance for the element is excited preferentially i the slice. First and second pulsed magnetic gradient fields (Gx,Gy) having magnetic field gradients in first and second mutually orthogonal directions in the plane of the slice are applied. The value of the gradient of the first field is stepped through a range of first values, for each of the first values the gradient of the second field being stepped through a range of second values. The free induction decay signal after each set of one first and second field pulses is measured to form a set of free induction decay signals which is subjected to a two dimensional Fourier Transform process with respect to the first and second directions, and to an additional Fourier Transform process with respect to time to obtain chemical shift spectra for the element at each of a plurality of different locations in the slice.
摘要翻译： 一种用于确定所选元素在身体区域的化学位移谱的空间分布的方法和设备。 在该区域是切片的情况下，该切片优先激发该元件的核磁共振。 施加具有在切片平面中的第一和第二相互正交方向上的磁场梯度的第一和第二脉冲磁场梯度场（Gx，Gy）。 第一场的梯度的值在第一值的范围内步进，对于第一值中的每一个，第二场的梯度逐步通过第二值的范围。 测量每一组第一和第二场脉冲之后的自由感应衰减信号以形成一组自由感应衰减信号，其经受关于第一和第二方向的二维傅里叶变换处理并且经过附加傅里叶变换 对时间进行变换处理以获得切片中多个不同位置中的每一个处的元素的化学位移谱。
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公开(公告)号：EP0373000B1
公开(公告)日：1998-02-25
申请号：EP89312855.3
申请日：1989-12-08
IPC分类号： G01R33/28
CPC分类号： A61B5/0555 , G01R33/38 , G01R33/3806
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公开(公告)号：EP0373000A3
公开(公告)日：1991-05-08
申请号：EP89312855.3
申请日：1989-12-08
IPC分类号： G01R33/28
CPC分类号： A61B5/0555 , G01R33/38 , G01R33/3806
摘要： A magnetic resonance imaging apparatus using a transverse magnet system (29) and having a patient handling arrangement (31, 33) which allows transport of a patient into the magnet system by first moving the patient in a direction (A) at right angles to the head-to-toe axis (B) of the patient. The patient's position in the magnet system may then be adjusted by movement in the head-to-toe axis direction. The area required to accommodate the apparatus is reduced compared with apparatus wherein patient transport is effected solely in the patient's head-to-toe axis direction.
摘要翻译： 一种使用横向磁体系统（29）并且具有患者处理装置（31,33）的磁共振成像装置，所述患者处理装置允许患者通过首先在与（a）方向成直角的方向移动患者的方式将患者运送到磁体系统中 从头到脚的轴（B）。 患者在磁体系统中的位置然后可以通过在头部到脚趾轴线方向上的移动来调整。 与其中患者运输仅在患者的头部至脚趾轴线方向上实现的设备相比，容纳该设备所需的面积减小。
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公开(公告)号：EP0373000A2
公开(公告)日：1990-06-13
申请号：EP89312855.3
申请日：1989-12-08
IPC分类号： G01R33/28
CPC分类号： A61B5/0555 , G01R33/38 , G01R33/3806
摘要： A magnetic resonance imaging apparatus using a transverse magnet system (29) and having a patient handling arrangement (31, 33) which allows transport of a patient into the magnet system by first moving the patient in a direction (A) at right angles to the head-to-toe axis (B) of the patient. The patient's position in the magnet system may then be adjusted by movement in the head-to-toe axis direction. The area required to accommodate the apparatus is reduced compared with apparatus wherein patient transport is effected solely in the patient's head-to-toe axis direction.
摘要翻译： 一种使用横向磁体系统（29）并具有患者处理装置（31,33）的磁共振成像装置，其通过首先使患者沿与（A）成直角的方向（A）移动患者而将患者运送到磁体系统 患者的头对脚轴（B）。 然后可以通过头对头轴线方向的运动来调整患者在磁体系统中的位置。 与仅在患者的头对头轴方向上进行患者输送的装置相比，容纳该装置所需的面积减少。
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公开(公告)号：EP0100183B1
公开(公告)日：1988-12-07
申请号：EP83304065.2
申请日：1983-07-13
IPC分类号： G01N24/08
CPC分类号： G01R33/485
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