公开(公告)号：US4932411A

公开(公告)日：1990-06-12

申请号：US943891

申请日：1986-12-18

申请人： Peter Fritschy ,  Horst Weber ,  Walter Lorenz ,  Otto Pastyr ,  Volker Sturm ,  Hans-Joachim Zabel ,  Reiner Bader

发明人： Peter Fritschy ,  Horst Weber ,  Walter Lorenz ,  Otto Pastyr ,  Volker Sturm ,  Hans-Joachim Zabel ,  Reiner Bader

IPC分类号： G01R33/28 ,  G01R33/34

CPC分类号： G01R33/285 ,  G01R33/34053 ,  G01R33/34007 ,  G01R33/34084

摘要： An intervivo probe for a nuclear magnetic resonance tomographic apparatus has a measuring coil carried at one end of a thin plastic carrier, the coil having a cross-sectional area in the range of approximately a few square millimeters and a length of approximately 10 to 20 mm. The measuring probe is inserted in body organs, such as the brain, liver and kidney by means of cannulae or channels which have been surgically or otherwise inserted in the organ for other purposes.

摘要翻译： 用于核磁共振断层摄影装置的体内探针具有在薄塑料载体的一端承载的测量线圈，线圈的横截面积在大约几平方毫米的范围内，长度约为10至20毫米 。 测量探针通过外科手术或其他方式插入器官中的插管或通道插入身体器官，如脑，肝和肾，用于其他目的。

公开(公告)号：US4835472A

公开(公告)日：1989-05-30

申请号：US226890

申请日：1988-08-01

申请人： Hans-Joachim Zabel ,  Walter Lorenz

发明人： Hans-Joachim Zabel ,  Walter Lorenz

IPC分类号： G01R33/341 ,  G01R33/36

CPC分类号： G01R33/3628 ,  G01R33/341

摘要： A local coil for detecting nuclear magnetic resonance signals from an examination subject, for spectroscopic analysis or image construction, has a coaxial conductor member shaped to form a first turn of the coil, with the inner conductor of the coaxial member exiting the jacket upon the completion of the first turn, and the unshielded inner conductor forming a second turn of the coil in the same winding direction as the first turn, and being connected to the jacket upon completion of the second turn. The coil is thus symmetrical with respect to ground, independent of frequency, and is balanced so that it can be directly connected to an asymmetrical coaxial cable.

摘要翻译： 用于检测来自检查对象的核磁共振信号的局部线圈，用于光谱分析或图像构造，具有成形为形成线圈的第一转的同轴导体构件，同轴构件的内导体在完成时离开夹套 并且所述非屏蔽内导体在与所述第一匝相同的卷绕方向上形成所述线圈的第二匝，并且在所述第二匝完成时连接到所述护套。 因此，线圈相对于地面是对称的，与频率无关，并且是平衡的，使得其可以直接连接到不对称的同轴电缆。

公开(公告)号：US07239400B2

公开(公告)日：2007-07-03

申请号：US10754625

申请日：2004-01-12

申请人： Michael Bock ,  Reiner Umathum ,  Hans-Joachim Zabel

发明人： Michael Bock ,  Reiner Umathum ,  Hans-Joachim Zabel

IPC分类号： G01B11/14

CPC分类号： G01R33/287 ,  G01R33/0322

摘要： The invention relates to a method and an apparatus for measuring the position and the orientation of an interventional device within a magnetic resonance imaging apparatus, the magnetic resonance image apparatus providing a static magnetic field B0 and magnetic field gradients with known magnetic flux densities and directions. The invention includes attaching a Faraday sensor to the interventional device, the Faraday sensor being connected to an optical measuring device. The method also includes using the optical measuring device for measuring the rotation of the plane of polarization of linearly polarized light in the Faraday sensor, while exposing the interventional device: (i) to the static magnetic field B0, and (ii) to the field gradients in all three directions of space in addition to the static magnetic field B0. The method also includes determining the position and the orientation of the interventional device by evaluating the measured rotation of the plane of polarization of the linearly polarized light.

摘要翻译： 本发明涉及一种用于测量磁共振成像装置内的介入装置的位置和取向的方法和装置，所述磁共振图像装置提供静态磁场B 0和磁场梯度 具有已知的磁通密度和方向。 本发明包括将法拉第传感器附接到介入装置，法拉第传感器连接到光学测量装置。 该方法还包括使用光学测量装置测量法拉第传感器中的线性偏振光的偏振平面的旋转，同时使介入装置暴露：（i）到静态磁场B < ，以及（ii）除静电磁场B 0 0之外的所有三个空间方向的场梯度。 该方法还包括通过评估线性偏振光的偏振平面的测量旋转来确定介入装置的位置和取向。