公开(公告)号：EP0841575A2

公开(公告)日：1998-05-13

申请号：EP97308477.5

申请日：1997-10-23

申请人： GEC-Marconi Limited

发明人： Gilderdale, David John

IPC分类号： G01R33/34

CPC分类号： G01R33/34084

摘要： A re-usable prostate coil, for use with magnetic resonance imaging to improve the signal to noise ratio, comprises a rigid handle portion by which the coil may be inserted into and withdrawn from an operative position within the patient, and a rigid coil supporting portion integral with the handle portion, a rectangular coil loop being carried by the coil supporting portion and at least a part of the handle portion having a width which is less than that of the rectangular coil loop.

摘要翻译： 用于磁共振成像以改善信噪比的可重新使用的前列腺线圈包括刚性手柄部分，通过该手柄部分可以将线圈插入并从患者体内的操作位置排出线圈，以及刚性线圈支撑部分 与手柄部分成一体，由线圈支撑部分承载的矩形线圈环和手柄部分的至少一部分具有小于矩形线圈环的宽度的宽度。

公开(公告)号：EP0922965A1

公开(公告)日：1999-06-16

申请号：EP99104945.3

申请日：1996-06-26

申请人： GEC-MARCONI LIMITED

发明人： Gilderdale, David John

IPC分类号： G01R33/28 ,  G01R33/34 ,  G01R33/3415

CPC分类号： G01R33/34084 ,  G01R33/34069 ,  G01R33/341

摘要： A coil arrangement of generally tubular form suitable for use in a method of examining a region of a body using a magnetic resonance technique, said method comprising: disposing the body in a magnetic field so as to define an equilibrium axis of magnetic alignment in said region; positioning adjacent said region a said coil arrangement with said region lying alongside but outside the generally cylindrical volume embraced by the coil arrangement; and utilizing said coil arrangement to excite and/or detect magnetic resonance in said region, said coil arrangement being characterised in that it comprises: a pair of substantially identical saddle coils (33A, 33B) which are disposed at complementary positions around said generally cylindrical volume (37) and have a span such that they overlap one another in a circumferential direction at opposite sides of said volume (37); and a generally planar rectangular third coil (35) which lies in a plane which intersects said volume (37) and is generally parallel to the overlapping portions of the saddle coils (33A, 33B). The third coil (35) lies in a plane which contains the main axis of the volume (37), and has a cross sectional area corresponding to the axial cross sectional area of the volume (37).

摘要翻译： 一种适用于利用磁共振技术检查身体区域的方法中使用的大致管状形式的线圈装置，所述方法包括：将所述身体置于磁场中以便在所述区域中限定磁性对准的平衡轴线 ; 将所述线圈装置邻近所述区域定位，所述区域位于所述线圈装置所包围的大致圆柱形体积旁边但位于所述区域之外; 并且利用所述线圈装置在所述区域中激励和/或检测磁共振，所述线圈装置的特征在于它包括：一对基本上相同的鞍形线圈（33A，33B），它们设置在所述大致圆柱形体积 （37）并且具有跨度，使得它们在所述容积（37）的相对侧沿圆周方向彼此重叠; 以及位于与所述体积（37）相交的平面内且大致平行于所述鞍形线圈（33A，33B）的重叠部分的大致平面的矩形第三线圈（35）。 第三线圈（35）位于包含容积（37）的主轴线的平面中，并具有与容积（37）的轴向截面积相对应的横截面积。

公开(公告)号：EP0752595A1

公开(公告)日：1997-01-08

申请号：EP96304709.7

申请日：1996-06-26

申请人： GEC-MARCONI LIMITED

发明人： Gilderdale, David John

IPC分类号： G01R33/28 ,  G01R33/34 ,  G01R33/3415

CPC分类号： G01R33/34084 ,  G01R33/34069 ,  G01R33/341

摘要： A method of examining a region of a body using a magnetic resonance technique comprising: disposing the body in a magnetic field so as to define an equilibrium axis of magnetic alignment in said region; positioning adjacent said region a coil of generally tubular form with said region lying alongside but outside the cylindrical volume embraced by the coil arrangement; and utilising said coil arrangement to excite and/or detect magnetic resonance in said region.

摘要翻译： 1.一种使用磁共振技术检查身体区域的方法，包括：将所述身体置于磁场中以便在所述区域中限定磁性对准的平衡轴线; 将与所述区域相邻的所述区域定位为大致管状形式的线圈，所述区域位于所述线圈装置所包围的所述圆柱形体积旁边但在所述圆柱形体积外; 并且利用所述线圈装置来激励和/或检测所述区域中的磁共振。

公开(公告)号：EP0644436A1

公开(公告)日：1995-03-22

申请号：EP94306782.7

申请日：1994-09-16

申请人： GEC-MARCONI LIMITED

发明人： Salloway, Anthony John ,  Gilderdale, David John

IPC分类号： G01R33/28 ,  G01R33/36 ,  A61B5/055

CPC分类号： G01R33/283 ,  G01R33/3621 ,  G01R33/3854 ,  G01R33/422

摘要： In a magnetic resonance apparatus including an active noise reduction arrangement (9, 49, 51, 53) for use by a patient (5) undergoing examination in the apparatus the transducers (25, 31) of the arrangement are non-magnetic, e.g. are of the electret, piezoelectric or condenser type, and have no parts of ferromagnetic material.

公开(公告)号：EP0841575A3

公开(公告)日：1999-12-22

申请号：EP97308477.5

申请日：1997-10-23

申请人： GEC-Marconi Limited

发明人： Gilderdale, David John

IPC分类号： G01R33/34

CPC分类号： G01R33/34084

摘要： A re-usable prostate coil, for use with magnetic resonance imaging to improve the signal to noise ratio, comprises a rigid handle portion by which the coil may be inserted into and withdrawn from an operative position within the patient, and a rigid coil supporting portion integral with the handle portion, a rectangular coil loop being carried by the coil supporting portion and at least a part of the handle portion having a width which is less than that of the rectangular coil loop.

公开(公告)号：EP0850595A1

公开(公告)日：1998-07-01

申请号：EP97309008.7

申请日：1997-11-10

申请人： GEC-MARCONI LIMITED

发明人： Gilderdale, David John ,  Grantham, Anthony Charles

IPC分类号： A61B5/055 ,  G01R33/28

CPC分类号： A61B5/055 ,  G01R33/285

摘要： An MR compatible endoscope 1 has an associated MR saddle coil 10 mounted on a removable former 9. The tip 2 of the endoscope has the usual service channels for imaging. The coil 10 provides an additional MR signal. To avoid the need to plug the coil 10 in, it is inductively coupled to a pick-up coil 13 and, to enable this to be removable as well from the endoscope, this may be located in one of the service channels 7 of the endoscope. The removable nature of the coil permits easy repair and, more importantly, a range of coils to be fitted to the endoscope to accommodate different magnetic field strengths.

摘要翻译： MR兼容的内窥镜1具有安装在可移除的成形器9上的相关的MR鞍形线圈10.内窥镜的尖端2具有用于成像的通常的服务通道。 线圈10提供附加的MR信号。 为了避免将线圈10插入其中，它被感应耦合到拾取线圈13，并且为了使其能够与内窥镜一起被移除，这可以位于内窥镜的服务通道7之一中 。 线圈的可拆卸性质允许容易地修复，更重要的是，一系列适于内窥镜的线圈以适应不同的磁场强度。

公开(公告)号：EP0752595B1

公开(公告)日：1999-10-27

申请号：EP96304709.7

申请日：1996-06-26

申请人： GEC-MARCONI LIMITED

发明人： Gilderdale, David John

IPC分类号： G01R33/28 ,  G01R33/34 ,  G01R33/3415

CPC分类号： G01R33/34084 ,  G01R33/34069 ,  G01R33/341

公开(公告)号：EP0644435A1

公开(公告)日：1995-03-22

申请号：EP94306781.9

申请日：1994-09-16

申请人： GEC-MARCONI LIMITED

发明人： Salloway, Anthony John ,  Gilderdale, David John

IPC分类号： G01R33/28 ,  G01R33/36 ,  A61B5/0424 ,  A61B5/055

CPC分类号： G01R33/283 ,  G01R33/3621 ,  G01R33/3854 ,  G01R33/422

摘要： In a magnetic resonance apparatus including a transducer (25, 31) positioned in the examination region of the apparatus, the transducer is connected with equipment (49) outside the examination region by way of a lead (47) which is grounded (51, 53) to signals of the frequency of the RF field applied to a subject (5) in the examination region to excite magnetic resonance in the subject, at a distance along the lead from the transducer equal to a quarter wavelength at the RF field frequency (or an odd multiple thereof). Distortion of the RF field due to loading by the transducer is thereby reduced. The transducer may, for example, be a microphone or loudspeaker, e.g. incorporated in an intercom or active noise reduction arrangement, or a sensor for sensing a condition of a patient being examined.

摘要翻译： 在包括位于设备的检查区域中的换能器（25,31）的磁共振装置中，换能器通过接地的导线（47）与检查区域外部的设备（49）连接（51,53 ）施加到在检查区域中施加到受检者（5）的RF场的频率的信号，以在沿着来自换能器的导线的距离等于在RF场频率处的四分之一波长的情况下激励受检者中的磁共振（或 其奇数倍）。 由此由换能器加载引起的RF场的失真因此减小。 换能器可以例如是麦克风或扬声器，例如麦克风或扬声器。 结合在内部通信或主动降噪布置中，或者用于感测正在检查的患者的状况的传感器。