公开(公告)号：WO2008104894A3

公开(公告)日：2009-01-08

申请号：PCT/IB2008050324

申请日：2008-01-30

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  ZHAI ZHIYONG ,  MORICH MICHAEL A ,  DEMEESTER GORDON D

Inventor： ZHAI ZHIYONG ,  MORICH MICHAEL A ,  DEMEESTER GORDON D

IPC: G01R33/34 ,  G01R33/36 ,  G01R33/422

CPC classification number: G01R33/34046 ,  G01R33/3635 ,  G01R33/422

Abstract: A radio frequency coil assembly includes an annular conductor (20, 22) configured to support a sinusoidal electrical current distribution at a magnetic resonance frequency, and a radio frequency shield (30, 32, 34) shielding the annular conductor in at least one direction, the radio frequency shield including at least one oi (i) a cylindrical shield portion (30) surrounding a perimeter of the annular conductor, and (ii) a planar shield portion (32, 34) arranged generally parallel with the annular conductor. In a magnetic resonance scanner embodiment, a magnet generates a static magnetic field (B0), a magnetic field gradient system 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 (B0).

Abstract translation: 射频线圈组件包括被配置为支撑磁共振频率的正弦电流分布的环形导体（20,22）和在至少一个方向上屏蔽环形导体的射频屏蔽（30,32,34） 所述射频屏蔽包括至少一个（i）围绕所述环形导体的周边的圆柱形屏蔽部分（30），以及（ii）大致平行于所述环形导体布置的平面屏蔽部分（32,34）。 在磁共振扫描器实施例中，磁体产生静磁场（B0），磁场梯度系统被配置为将选定的磁场梯度叠加在静磁场上，并且所述射频线圈组件与环形导体一般布置 横向静磁场（B0）。

公开(公告)号：WO2007140089A3

公开(公告)日：2008-02-14

申请号：PCT/US2007068522

申请日：2007-05-09

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  SHVARTSMAN SHMARYU M ,  DEMEESTER GORDON D ,  MORICH MICHAEL A

Inventor： SHVARTSMAN SHMARYU M ,  DEMEESTER GORDON D ,  MORICH MICHAEL A

IPC: G01R33/385 ,  G01R33/421

CPC classification number: G01R33/385 ,  G01R33/421 ,  G01R33/4215

Abstract: 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.

Abstract translation: 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。

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

Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V. ,  SHVARTSMAN, Shmaryu, M. ,  DEMEESTER, Gordon, D. ,  MORICH, Michael, A.

Inventor： SHVARTSMAN, Shmaryu, M. ,  DEMEESTER, Gordon, D. ,  MORICH, Michael, A.

CPC classification number: G01R33/385 ,  G01R33/421 ,  G01R33/4215

Abstract: 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.

Abstract translation: 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。

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

Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V. ,  MORICH, Michael, A. ,  DEMEESTER, Gordon, D. ,  ZHAI, Zhiyong

Inventor： MORICH, Michael, A. ,  DEMEESTER, Gordon, D. ,  ZHAI, Zhiyong

IPC: G01R33/32

CPC classification number: G01R33/583 ,  G01R33/4835

Abstract: 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.

Abstract translation: 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。

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

Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V. ,  MORICH, Michael, A. ,  DEMEESTER, Gordon, D. ,  GAGNON, Daniel

Inventor： MORICH, Michael, A. ,  DEMEESTER, Gordon, D. ,  GAGNON, Daniel

IPC: G01R33/48 ,  G01T1/161

CPC classification number: G01R33/481 ,  G01R33/4808 ,  G01T1/1603 ,  G01T1/1647

Abstract: 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.

Abstract translation: 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。

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

Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V. ,  ZHAI, Zhiyong ,  MORICH, Michael, A. ,  DEMEESTER, Gordon, D. ,  GAUSS, Robert, C.

Inventor： ZHAI, Zhiyong ,  MORICH, Michael, A. ,  DEMEESTER, Gordon, D. ,  GAUSS, Robert, C.

IPC: G01R33/34

CPC classification number: G01R33/34046 ,  G01R33/3664

Abstract: 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.

Abstract translation: 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。

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

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  SHVARTSMAN, Shmaryu, M. ,  MORICH, Michael, A. ,  DEMEESTER, Gordon, D.

Inventor： SHVARTSMAN, Shmaryu, M. ,  MORICH, Michael, A. ,  DEMEESTER, Gordon, D.

IPC: G01R33/421

CPC classification number: G01R33/385 ,  G01R33/421 ,  G01R33/4215

Abstract: 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.

Abstract translation: 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）。

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

Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V. ,  ZHAI, Zhiyong ,  MORICH, Michael, A. ,  DEMEESTER, Gordon, D.

Inventor： ZHAI, Zhiyong ,  MORICH, Michael, A. ,  DEMEESTER, Gordon, D.

IPC: G01R33/34 ,  G01R33/36 ,  G01R33/422

CPC classification number: G01R33/34046 ,  G01R33/3635 ,  G01R33/422

Abstract: 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 ).

Abstract translation: 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）。

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

Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V. ,  LEUSSLER, Christoph, G. ,  LUEDEKE, Kai-michael ,  MORICH, Michael, A. ,  ZHAI, Zhiyong ,  DEMEESTER, Gordon, D.

Inventor： LEUSSLER, Christoph, G. ,  LUEDEKE, Kai-michael ,  MORICH, Michael, A. ,  ZHAI, Zhiyong ,  DEMEESTER, Gordon, D.

IPC: G01R33/422

CPC classification number: G01R33/422 ,  G01R33/3628

Abstract: 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.

Abstract translation: 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。

公开(公告)号：WO2005001497A1

公开(公告)日：2005-01-06

申请号：PCT/IB2004/001955

申请日：2004-06-01

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PETOT, Bradford, W. ,  DEMEESTER, Gordon, D. ,  AMOR, William, H.

Inventor： PETOT, Bradford, W. ,  DEMEESTER, Gordon, D. ,  AMOR, William, H.

IPC: G01R33/28

CPC classification number: A61B5/0555 ,  A61B5/704 ,  A61B5/706 ,  A61B6/04 ,  A61B6/0407 ,  A61B6/0492 ,  G01R33/28 ,  G01R33/56375

Abstract: An MRI apparatus is provided. The MRI apparatus includes a main magnet (12) for generating a main magnetic field in an examination region, a plurality of gradient magnets (16) for generating magnetic field gradients in the main magnetic field, a radio frequency coil (22) for transmitting radio frequency signals into the examination region and exciting magnetic resonance in a subject disposed therein, and a radio frequency coil for receiving the magnetic resonance signals from the subject. The MRI apparatus also includes subject support (52) for supporting the subject, a position controller (60) for controlling the position of the subject support within the examination region, and a position encoder (53) for directly measuring the position of the subject support.

Abstract translation: 提供MRI装置。 MRI装置包括用于在检查区域中产生主磁场的主磁体（12），用于在主磁场中产生磁场梯度的多个梯度磁体（16），用于发射无线电的射频线圈 频率信号进入检查区域并激励设置在其中的对象中的磁共振，以及射频线圈，用于接收来自被检体的磁共振信号。 MRI装置还包括用于支撑被检体的被检体支撑件（52），用于控制检查区域内的被检体支架的位置的位置控制器（60），以及用于直接测量被检体支架 。