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1. 发明授权

US07394254B2 Magnetic resonance imaging having radiation compatible radiofrequency coils 有权
标题翻译：具有辐射兼容的射频线圈的磁共振成像
公开(公告)号：US07394254B2
公开(公告)日：2008-07-01
申请号：US11412419
申请日：2006-04-26
申请人： Viola Rieke , Rosemary Kim Butts , Arundhuti Ganguly , Norbert J. Pelc
发明人： Viola Rieke , Rosemary Kim Butts , Arundhuti Ganguly , Norbert J. Pelc
IPC分类号： G01V3/00
CPC分类号： G01R33/341 , A61B5/055
摘要： Improved compatibility of MRI with radiation imaging is provided by MRI RF coils having transmissive coil sections. The transmissive coil sections are substantially transparent to the penetrating radiation employed by the radiation imaging system. Thus the transmissive coil sections can be disposed in a field of view of the radiation imaging system without introducing artifacts into the radiation images. Transparency to penetrating radiation can be achieved by substantially including only low atomic number (i.e., Z
摘要翻译：通过具有透射线圈部分的MRI RF线圈提供MRI与放射成像的相容性的改善。透射线圈段对于辐射成像系统采用的穿透辐射基本上是透明的。因此，透射线圈部分可以放置在辐射成像系统的视场中，而不会将伪影引入辐射图像。穿透辐射的透明度可以通过在透射线圈部分中仅包括低原子数（即Z <29）个元素来实现。优选地，透射线圈段基本上由铝制成。

2. 发明申请

US20060273795A1 Magnetic resonance imaging having radiation compatible radiofrequency coils 有权
标题翻译：具有辐射兼容的射频线圈的磁共振成像
公开(公告)号：US20060273795A1
公开(公告)日：2006-12-07
申请号：US11412419
申请日：2006-04-26
申请人： Viola Rieke , Rosemary Kim , Arundhuti Ganguly , Norbert Pelc
发明人： Viola Rieke , Rosemary Kim , Arundhuti Ganguly , Norbert Pelc
IPC分类号： G01V3/00
CPC分类号： G01R33/341 , A61B5/055
摘要： Improved compatibility of MRI with radiation imaging is provided by MRI RF coils having transmissive coil sections. The transmissive coil sections are substantially transparent to the penetrating radiation employed by the radiation imaging system. Thus the transmissive coil sections can be disposed in a field of view of the radiation imaging system without introducing artifacts into the radiation images. Transparency to penetrating radiation can be achieved by substantially including only low atomic number (i.e., Z
摘要翻译：通过具有透射线圈部分的MRI RF线圈提供MRI与放射成像的相容性的改善。透射线圈段对于辐射成像系统采用的穿透辐射基本上是透明的。因此，透射线圈部分可以放置在辐射成像系统的视场中，而不会将伪影引入辐射图像。穿透辐射的透明度可以通过在透射线圈部分中仅包括低原子数（即Z <29）个元素来实现。优选地，透射线圈段基本上由铝制成。

3. 发明授权

US06678544B2 Methods for view angle tilt imaging of interventional devices providing adjustment of device contrast 有权
标题翻译：提供设备对比度调节的介入装置的视角倾斜成像方法
公开(公告)号：US06678544B2
公开(公告)日：2004-01-13
申请号：US09853960
申请日：2001-05-10
申请人： Rosemary Kim Butts , John M Pauly
发明人： Rosemary Kim Butts , John M Pauly
IPC分类号： A61B5055
CPC分类号： G01R33/285 , G01R33/4833
摘要： The present invention provides a method for view-angle tilt magnetic resonance imaging of an object having a localized variation of magnetic susceptibility. The method includes the steps of: applying an RF excitation pulse and a first field gradient simultaneously to the object; applying an RF refocusing pulse and a second field gradient simultaneously to the object; and applying a tilted readout gradient to the object, where the tilt angle is selected to provide incomplete removal of the image distortion produced by the magnetic susceptibility variation. In this manner, magnetic susceptibility contrast is provided in the region of variable magnetic susceptibility. Adjustment of the tilt angle can be used to provide a desired amount of magnetic susceptibility contrast.
摘要翻译：本发明提供了一种具有磁化率局部变化的物体的视角倾斜磁共振成像方法。该方法包括以下步骤：向对象同时施加RF激励脉冲和第一场梯度; 向对象同时施加RF重聚焦脉冲和第二场梯度; 以及向所述物体施加倾斜的读出梯度，其中所述倾斜角被选择以提供由所述磁化率变化产生的图像失真的不完全去除。以这种方式，在可变磁化率区域中提供磁化率对比度。可以使用倾斜角的调整来提供期望量的磁化率对比度。

4. 发明授权

US6032068A Non-invasive measurement of frozen tissue temperature using MRI signal 失效
标题翻译：使用MRI信号非侵入性测量冷冻组织温度
公开(公告)号：US6032068A
公开(公告)日：2000-02-29
申请号：US26023
申请日：1998-02-19
申请人： Bruce L. Daniel , Rosemary Kim Butts
发明人： Bruce L. Daniel , Rosemary Kim Butts
IPC分类号： A61B5/055 , A61B18/02
CPC分类号： A61B18/02 , A61B2018/0262 , A61B5/055
摘要： Temperature in frozen tissue can be measured from magnetic resonance signals from the frozen tissue based on spin-spin relaxation time (T2) or based on relative intensity of the magnetic resonance signals. Short echo times are required, and use of tailored RF pulses, non-Cartesian readouts, and multi-slice and 3D k-space acquisitions are preferably employed.
摘要翻译：基于自旋 - 自旋弛豫时间（T2）或基于磁共振信号的相对强度，可以从来自冷冻组织的磁共振信号测量冷冻组织中的温度。需要短的回波时间，并且优选地使用定制的RF脉冲，非笛卡尔读数以及多切片和3D k空间采集。

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