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1. 发明申请

WO2007140089A2 THREE-DIMENSIONAL ASYMMETRIC TRANSVERSE GRADIENT COILS 审中-公开
标题翻译：三维不对称横向梯度线圈
公开(公告)号：WO2007140089A2
公开(公告)日：2007-12-06
申请号：PCT/US2007/068522
申请日：2007-05-09
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , SHVARTSMAN, Shmaryu, M. , DEMEESTER, Gordon, D. , MORICH, Michael, A.
发明人： SHVARTSMAN, Shmaryu, M. , DEMEESTER, Gordon, D. , MORICH, Michael, A.
CPC分类号： G01R33/385 , G01R33/421 , G01R33/4215
摘要： A transverse magnetic field gradient coil includes a set of primary coil loops (62) defining an operative coil end (66) and a distal coil end (68). The set of primary coil loops are configured to generate a magnetic field gradient in a selected region asymmetrically disposed relatively closer to the operative coil end and relatively further from the distal coil end. A set of shield coil loops (64) are disposed outside the set of primary coil loops and are configured to substantially shield the set of primary coil loops. Two or more current jumps (70) are disposed at the distal end. Each current jump electrically connects an incomplete loop of the set of primary coil loops with an incomplete loop of the set of shield coil loops.
摘要翻译：横向磁场梯度线圈包括限定操作线圈端（66）和远端线圈端（68）的一组初级线圈环（62）。一组初级线圈环被配置为在选择的区域中生成磁场梯度，所述选择区域非对称地布置成相对更靠近操作线圈端并且远离远侧线圈端。一组屏蔽线圈环（64）设置在初级线圈环组之外，并被配置为基本上屏蔽该组初级线圈环。在远端设置两个或多个电流跳跃（70）。每个电流跳跃将一组初级线圈回路的不完整回路与该组屏蔽线圈回路的不完整回路电连接。

2. 发明申请

WO2004046745A1 SELF-SHIELDED GRADIENT FIELD COIL FOR MAGNETIC RESONANCE IMAGING 审中-公开
标题翻译：用于磁共振成像的自屏蔽梯度线圈
公开(公告)号：WO2004046745A1
公开(公告)日：2004-06-03
申请号：PCT/IB2003/004802
申请日：2003-10-29
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , SHVARTSMAN, Shmaryu, M. , MORICH, Michael, A. , DEMEESTER, Gordon, D.
发明人： SHVARTSMAN, Shmaryu, M. , MORICH, Michael, A. , DEMEESTER, Gordon, D.
IPC分类号： G01R33/421
CPC分类号： G01R33/385 , G01R33/421 , G01R33/4215
摘要： A gradient coil for a magnetic resonance imaging apparatus (10) includes a primary coil (16) defining an inner cylindrical surface (60), and shield coil (18) or coils defining a coaxial outer cylindrical surface (62). Coil jumps (74) connect the primary and shield coils (16, 18). The coil jumps (74) define a non-planar current-sharing surface (64) extending between inner and outer contours (66, 68) that coincide with the inner and outer cylindrical surfaces (60, 62), respectively. The coil (16, 18, 74) defines a current path that passes across the current sharing surface (64) between the inner and outer contours (66, 68) a plurality of times. Optionally, some primary coil turns (70) are electrically interconnected to define an isolated primary sub coil (P2) that together with a second shield (S2, S2', S2'') enables a discretely or continuously selectable field of view.
摘要翻译：用于磁共振成像装置（10）的梯度线圈包括限定内圆柱形表面（60）的初级线圈（16）和限定同轴外圆柱形表面（62）的屏蔽线圈（18）或线圈。线圈跳跃（74）连接主和屏蔽线圈（16,18）。线圈跳跃（74）限定分别在与内圆柱形表面（60）和外圆柱形表面（62）重合的内轮廓和外轮廓（66,68）之间延伸的非平面分流表面（64）。线圈（16,18,74）限定了在内外轮廓（66,68）之间穿过电流共享表面（64）的电流路径多次。可选地，一些初级线圈匝（70）电互连以限定与第二屏蔽（S2，S2'，S2“）一起的离散或连续可选视场的隔离的初级次级线圈（P2）。

3. 发明申请

WO2006097864A1 MINIMUM ENERGY SHIM COILS FOR MAGNETIC RESONANCE 审中-公开
标题翻译：用于磁共振的最小能量线圈
公开(公告)号：WO2006097864A1
公开(公告)日：2006-09-21
申请号：PCT/IB2006/050682
申请日：2006-03-03
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , MORICH, Michael, A. , SHVARTSMAN, Shmaryu, M. , DEMEESTER, Gordon, D.
发明人： MORICH, Michael, A. , SHVARTSMAN, Shmaryu, M. , DEMEESTER, Gordon, D.
IPC分类号： G01R33/3875
CPC分类号： G01R33/3875
摘要： In a magnetic resonance imaging system (10), a main magnet (20) generates a substantially uniform main magnetic field (Bo) through an examination region (14). An imaging subject (16) generates inhomogeneities in the main magnetic field (Bo). One or more shim coils are positioned adjacent a gradient coil (26). The gradient coil (26) is driven in halves by first and second power sources (28, 30) which have slightly dissimilar power characteristics which induce an inductive coupling between the shim coil (60) and the gradient coil (26). The shim coil (60) is designed to produce a desired magnetic field, such that the inductive coupling of the shim coils (60) to the gradient coil (26) is substantially minimized while the inhomogeneities in the main magnetic field (Bo) caused by the imaging subject are corrected based on prespecified spatial characteristics.
摘要翻译：在磁共振成像系统（10）中，主磁体（20）通过检查区域（14）产生大致均匀的主磁场（Bo）。成像对象（16）在主磁场（Bo）中产生不均匀性。一个或多个垫片线圈邻近梯度线圈（26）定位。梯度线圈（26）由具有稍微不相似的功率特性的第一和第二电源（28,30）驱动两半，其引起垫片线圈（60）和梯度线圈（26）之间的电感耦合。垫片线圈（60）被设计成产生期望的磁场，使得垫片线圈（60）与梯度线圈（26）的电感耦合基本上最小化，而主磁场（Bo）中的不均匀性由基于预先指定的空间特征校正成像对象。

4. 发明申请

WO2005043182A1 B1 FIELD CONTROL IN MAGNETIC RESONANCE IMAGING 审中-公开
标题翻译： B1磁场共振成像中的现场控制
公开(公告)号：WO2005043182A1
公开(公告)日：2005-05-12
申请号：PCT/IB2004/052020
申请日：2004-10-07
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , MORICH, Michael, A. , DEMEESTER, Gordon, D. , ZHAI, Zhiyong
发明人： MORICH, Michael, A. , DEMEESTER, Gordon, D. , ZHAI, Zhiyong
IPC分类号： G01R33/32
CPC分类号： G01R33/583 , G01R33/4835
摘要： Multi-slice magnetic resonance imaging of a region of interest of an imaging subject (16) is performed using a radio frequency coil (40) arranged to generate a B 1 magnetic field in the region of interest. One or more processors (44, 82, 88, 110) determine a B1 field value for each slice that is representative of the B1 field over a selected area of the slice, accounting for subject effects on the BI field, and determine an adjusted per-slice radio frequency excitation for each slice that adjusts the B 1 field value for the slice to a selected value. A magnetic resonance imaging system (10, 44, 46, 50, 52) acquires magnetic resonance imaging data for each slice using the adjusted per-slice radio frequency excitation for that slice. A reconstruction processor (58) reconstructs the acquired magnetic resonance imaging data into a reconstructed image representation.
摘要翻译：使用布置成在感兴趣区域中产生B1磁场的射频线圈（40）来执行成像对象（16）的感兴趣区域的多层磁共振成像。一个或多个处理器（44,82,88,110）确定代表在片段的选定区域上的B1字段的每个片段的B1字段值，以考虑BI字段上的对象影响，并且确定每个对于每个切片调整切片的B1字段值到选定值的-Sslice射频激励。磁共振成像系统（10,44,46,50,52）使用针对该切片的调节的每切片射频激励获取每个切片的磁共振成像数据。重建处理器（58）将所获取的磁共振成像数据重建为重建图像表示。

5. 发明申请

WO2008104894A2 SINUSOIDALLY RESONANT RADIO FREQUENCY VOLUME COILS FOR HIGH FIELD MAGNETIC RESONANCE APPLICATIONS 审中-公开
标题翻译：用于高场磁共振应用的SINUSOIDALLY谐振无线电频率线圈
公开(公告)号：WO2008104894A2
公开(公告)日：2008-09-04
申请号：PCT/IB2008/050324
申请日：2008-01-30
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , ZHAI, Zhiyong , MORICH, Michael, A. , DEMEESTER, Gordon, D.
发明人： ZHAI, Zhiyong , MORICH, Michael, A. , DEMEESTER, Gordon, D.
IPC分类号： G01R33/34 , G01R33/36 , G01R33/422
CPC分类号： G01R33/34046 , G01R33/3635 , G01R33/422
摘要： A radio frequency coil assembly includes an annular conductor (20, 22, 120) configured to support a sinusoidal electrical current distribution at a magnetic resonance frequency, and a radio frequency shield (30, 32, 34, 52, 60, 61, 130) shielding the annular conductor in at least one direction, the radio frequency shield including at least one of (i) a cylindrical shield portion (30, 60, 61, 130) surrounding a perimeter of the annular conductor, and (ii) a planar shield portion (32, 34, 52) arranged generally parallel with the annular conductor. In a magnetic resonance scanner embodiment, a magnet (10) generates a static magnetic field (B 0 ), a magnetic field gradient system (14) is configured to superimpose selected magnetic field gradients on the static magnetic field, and said radio frequency coil assembly is arranged with the annular conductor generally transverse to the static magnetic field (B o ).
摘要翻译：射频线圈组件包括被配置为支持磁共振频率的正弦电流分布的环形导体（20,22，120）和射频屏蔽（30,32,34,52,60,61,130）在至少一个方向上屏蔽环形导体，射频屏蔽包括以下至少一个：（i）围绕环形导体的周边的圆柱形屏蔽部分（30,60,61,130），和（ii）平面屏蔽大体平行于环形导体布置的部分（32,34,52）。在磁共振扫描器实施例中，磁体（10）产生静磁场（B SUB），磁场梯度系统（14）被配置为将选定的磁场梯度叠加在静磁场，并且所述射频线圈组件布置成与环形导体大致横向于静磁场（B SUB）。

6. 发明申请

WO2006120588A1 ELECTROMAGNETIC SHIELDING FOR HIGH FIELD MRI COILS 审中-公开
标题翻译：高磁场线圈电磁屏蔽
公开(公告)号：WO2006120588A1
公开(公告)日：2006-11-16
申请号：PCT/IB2006/051212
申请日：2006-04-19
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , LEUSSLER, Christoph, G. , LUEDEKE, Kai-michael , MORICH, Michael, A. , ZHAI, Zhiyong , DEMEESTER, Gordon, D.
发明人： LEUSSLER, Christoph, G. , LUEDEKE, Kai-michael , MORICH, Michael, A. , ZHAI, Zhiyong , DEMEESTER, Gordon, D.
IPC分类号： G01R33/422
CPC分类号： G01R33/422 , G01R33/3628
摘要： A radio frequency coil for magnetic resonance imaging includes an active coil member (70, 70 1 , 170, 270) that defines an imaging volume. The active coil member has a first open end (74) with a first cross-sectional dimension (dactive). A shield coil member (72, 72 1 , 72 2 , 72 3 , 72 4 , 72 5 , 172, 172 2 , 272) substantially surrounds the active coil member. The shield coil member has a constricted open end (88) arranged proximate to the first open end of the active coil member with a constricted cross-sectional dimension (dconst) that is less than the cross-sectional dimension (dShieid) of the shield coil member. In some embodiments, the radio frequency coil further includes an outer shield coil member (100) that is substantially larger than the shield coil member (72, 72 1 , 72 2 , 72 3 , 72 4 , 72 5 , 172, 172 2 , 272), and surrounds both the active coil member and the shield coil member.
摘要翻译：用于磁共振成像的射频线圈包括限定成像体积的有源线圈构件（70,70A，170,270）。有源线圈构件具有第一横截面尺寸（dactive）的第一开口端（74）。屏蔽线圈构件（72,72，...，72，72，72，72，SUB）大致围绕有源线圈构件。屏蔽线圈构件具有靠近有源线圈构件的第一开口端布置的收缩的开口端（88），其缩小的横截面尺寸（dconst）小于屏蔽线圈的横截面尺寸（dShid）会员。在一些实施例中，射频线圈还包括外屏蔽线圈构件（100），该外屏蔽线圈构件（100）基本上大于屏蔽线圈构件（72,72，...，72） 72 3，72 4，72 5，172 172 172，272），并且包围活性物质线圈构件和屏蔽线圈构件。

7. 发明申请

WO2008135873A1 HYBRID MR/PET WITH CORRECTION FOR RADIATION ABSORPTION BY MR COIL 审中-公开
标题翻译：混合MR / PET与MR线圈的辐射吸收校正
公开(公告)号：WO2008135873A1
公开(公告)日：2008-11-13
申请号：PCT/IB2008/051475
申请日：2008-04-17
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , MORICH, Michael, A. , DEMEESTER, Gordon, D. , GAGNON, Daniel
发明人： MORICH, Michael, A. , DEMEESTER, Gordon, D. , GAGNON, Daniel
IPC分类号： G01R33/48 , G01T1/161
CPC分类号： G01R33/481 , G01R33/4808 , G01T1/1603 , G01T1/1647
摘要： An imaging method comprises: acquiring magnetic resonance data of a subject using a magnetic resonance component (30, 30') disposed with the subject; acquiring nuclear imaging data of the subject with the magnetic resonance component disposed with the subject; determining a position of the magnetic resonance component respective to a frame of reference of the nuclear imaging data; and reconstructing the nuclear imaging data (60) to generate a nuclear image (62) of at least a portion of the subject. The reconstructing includes adjusting at least one of the nuclear imaging data and the nuclear image based on a density map (46) of the magnetic resonance component and the determined position of the magnetic resonance component respective to the frame of reference of the nuclear imaging data to correct the nuclear image for radiation absorption by the magnetic resonance component.
摘要翻译：一种成像方法包括：使用与受检者一起设置的磁共振成分（30,30'）来获取对象的磁共振数据; 用设置在对象的磁共振成分获取对象的核成像数据; 确定所述磁共振成分相对于所述核成像数据的参考系的位置; 以及重构所述核成像数据（60）以产生所述受试者的至少一部分的核图像（62）。重建包括基于磁共振分量的密度图（46）和与核成像数据的参考系的相应的磁共振分量的确定的位置来调整核成像数据和核图像中的至少一个，通过磁共振成分校正核图像的辐射吸收。

8. 发明申请

WO2006134557A1 RF VOLUME COIL WITH SELECTABLE FIELD OF VIEW 审中-公开
标题翻译：具有可选择视场的RF体积线圈
公开(公告)号：WO2006134557A1
公开(公告)日：2006-12-21
申请号：PCT/IB2006/051884
申请日：2006-06-13
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , ZHAI, Zhiyong , MORICH, Michael, A. , DEMEESTER, Gordon, D. , GAUSS, Robert, C.
发明人： ZHAI, Zhiyong , MORICH, Michael, A. , DEMEESTER, Gordon, D. , GAUSS, Robert, C.
IPC分类号： G01R33/34
CPC分类号： G01R33/34046 , G01R33/3664
摘要： A radio frequency coil for magnetic resonance imaging or spectroscopy includes a plurality of generally parallel conductive members (70) surrounding a region of interest (14). One or more end members (72, 74) are disposed generally transverse to the plurality of parallel conductive members. A generally cylindrical radio frequency shield (32) surrounds the plurality of generally parallel conductive members. Switchable circuitry (80, 80') selectably has: (i) a first switched configuration (90, 90') in which the conductive members are operatively connected with the one or more end members; and (ii) a second switched configuration (92, 92') in which the conductive members are operatively connected with the radio frequency shield. The radio frequency coil operates in a birdcage resonance mode in the first switched configuration and operates in a TEM resonance mode in the second switched configuration.
摘要翻译：用于磁共振成像或光谱的射频线圈包括围绕感兴趣区域（14）的多个大致平行的导电构件（70）。一个或多个端部构件（72,74）大致横向于多个平行导电构件设置。通常为圆柱形的射频屏蔽（32）围绕多个大致平行的导电构件。可切换电路（80,80'）可选择地具有：（i）第一开关构造（90,90'），其中导电构件与一个或多个端构件可操作地连接; 和（ii）其中导电构件与射频屏蔽可操作地连接的第二切换配置（92,92'）。射频线圈在第一切换配置中以鸟笼共振模式工作，并且在第二切换配置中以TEM共振模式操作。

9. 发明申请

WO2009060348A1 MR-PET CYCLIC MOTION GATING AND CORRECTION 审中-公开
标题翻译： MR-PET循环运动增益和校正
公开(公告)号：WO2009060348A1
公开(公告)日：2009-05-14
申请号：PCT/IB2008/054488
申请日：2008-10-29
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , DEMEESTER, Gordon, D. , MORICH, Michael, A. , EAGAN, Timothy, P.
发明人： DEMEESTER, Gordon, D. , MORICH, Michael, A. , EAGAN, Timothy, P.
IPC分类号： G01R33/48 , G01R33/565 , A61B5/055 , A61B6/00 , G01T1/16 , G01R33/567
CPC分类号： G01R33/481 , A61B5/0035 , A61B5/0402 , A61B5/055 , A61B5/08 , A61B5/7289 , A61B5/7292 , A61B6/037 , A61B6/5247 , A61B6/5288 , A61B6/541 , G01R33/56509 , G01R33/5673 , G01R33/5676
摘要： In preparation for acquiring PET image data, subject motion models are built based on physiologic signal monitoring and MR data is collected and used for improved PET imaging. The physiologic signal monitoring is also used during PET imaging, and the acquired MR data is used for prospective or retrospective gating of the PET image acquisition, or in the PET reconstruction for improved correction/imaging.
摘要翻译：为准备获取PET图像数据，基于生理信号监测建立主题运动模型，收集MR数据并用于改进PET成像。生物信号监测也用于PET成像，采集的MR数据用于PET图像采集的前瞻性或回顾性门控，或PET重建中用于改善校正/成像。

10. 发明申请

WO2008104895A1 DOUBLY RESONANT HIGH FIELD RADIO FREQUENCY SURFACE COILS FOR MAGNETIC RESONANCE 审中-公开
标题翻译：双磁共振高频无线电频率磁场线圈
公开(公告)号：WO2008104895A1
公开(公告)日：2008-09-04
申请号：PCT/IB2008/050328
申请日：2008-01-30
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , ZHAI, Zhiyong , MORICH, Michael, A. , DEMEESTER, Gordon, D.
发明人： ZHAI, Zhiyong , MORICH, Michael, A. , DEMEESTER, Gordon, D.
IPC分类号： G01R33/341 , G01R33/36 , G01R33/422
CPC分类号： G01R33/3635 , G01R33/34007 , G01R33/341 , G01R33/3678
摘要： A radio frequency coil comprises an annular conductor or parallel annular conductors (22, 22c, 22d) configured to support: (i) a uniform electrical current distribution generating a first B 1 field (B 1,uniform ) at a first magnetic resonance frequency directed out of a plane of the annular conductor or conductors; and (ii) a sinusoidal electrical current distribution generating a second B 1 field (B 1,sine ) at a second magnetic resonance frequency directed parallel with the plane of the annular conductor or conductors. A magnetic resonance scanner comprises: a magnet (10) generating a static magnetic field (B 0 ); a magnetic field gradient system (14) configured to superimpose selected magnetic field gradients on the static magnetic field; and said radio frequency coil including said annular conductor or parallel annular conductors (22, 22c, 22d).
摘要翻译：射频线圈包括环形导体或平行环形导体（22,22c，22d），其被配置为支持：（i）均匀的电流分布，其产生第一B 1场（B 1），均匀的），以指向环形导体或导体的平面的第一磁共振频率; 和（ii）在与环形导体的平面平行的第二磁共振频率处产生产生第二B 1场（B 1，正弦）的正弦电流分布或导体。磁共振扫描器包括：产生静磁场（B SUB）的磁体（10）; 磁场梯度系统（14），被配置为将选定的磁场梯度叠加在静磁场上; 并且所述射频线圈包括所述环形导体或平行环形导体（22,22c，22d）。

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