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公开(公告)号：US08604795B2
公开(公告)日：2013-12-10
申请号：US13489491
申请日：2012-06-06
IPC分类号： G01V3/00
CPC分类号： G01R33/481 , A61B5/0035 , A61B5/055 , G01R33/385 , G01R33/3875 , G01R33/421 , G01R33/4215 , G01R33/4808
摘要： A generally cylindrical set of coil windings includes primary coil windings and shield coil windings at a larger radial position than the primary coil windings, and an arcuate or annular central gap that is free of coil windings, has an axial extent of at least ten centimeters, and spans at least a 180° angular interval. Connecting conductors disposed at each edge of the central gap electrically connect selected primary and secondary coil windings. In a scanner setting, a main magnet is disposed outside of the generally cylindrical set of coil windings. In a hybrid scanner setting, an annular ring of positron emission tomography (PET) detectors is disposed in the central gap of the generally cylindrical set of coil windings.
摘要翻译： 一般为圆柱形的线圈绕组包括在初级线圈绕组较大的径向位置处的初级线圈绕组和屏蔽线圈绕组，并且没有线圈绕组的弓形或环形中心间隙具有至少十厘米的轴向范围， 并且跨越至少180°的角度间隔。 设置在中心间隙的每个边缘处的连接导体电连接所选择的初级和次级线圈绕组。 在扫描仪设置中，主磁体设置在大致圆柱形的线圈绕组的外侧。 在混合扫描器设置中，正电子发射断层摄影（PET）检测器的环形环设置在大致圆柱形的线圈绕组组的中心间隙中。
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公开(公告)号：US08525116B2
公开(公告)日：2013-09-03
申请号：US12670256
申请日：2008-06-23
CPC分类号： G01T1/1603
摘要： An imaging system includes positron emission tomography (PET) detectors (30) shrouded by broadband galvanic isolation (99) and coincidence detection electronics (50, 50ob), or other radiation detectors. A magnetic resonance scanner includes a main magnet (12, 14) and magnetic field gradient assembly (20, 20′, 22, 24) configured to acquire imaging data from a magnetic resonance examination region at least partially overlapping the examination region surrounded by the PET detectors. A radio frequency coil (80, 100) has plurality of conductors (66, 166) and a radio frequency screen (88, 188, 188EB, 188F) substantially surrounding the conductors to shield the coil at the magnetic resonance frequency. The radiation detectors are outside of the radio frequency screen. Magnetic resonance-compatible radiation collimators or shielding (60, 62) containing an electrically non-conductive and non-ferromagnetic heavy atom oxide material are disposed with the radiation detectors.
摘要翻译： 一种成像系统包括由宽带电流隔离（99）和重合检测电路（50,50ob）或其他辐射检测器覆盖的正电子发射断层摄影（PET）检测器（30）。 磁共振扫描仪包括主磁体（12,14）和磁场梯度组件（20,20'，22,24），其被配置为从至少部分地与由PET包围的检查区域重叠的磁共振检查区域获取成像数据 探测器 射频线圈（80,100）具有基本上围绕导体以屏蔽线圈的磁共振频率的多个导体（66,166）和射频屏（88,188,188EB，188F）。 辐射探测器在射频屏幕之外。 磁辐射准直仪或包含非导电和非铁磁重原子氧化物材料的屏蔽（60,62）与辐射探测器一起设置。
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公开(公告)号：US08378677B2
公开(公告)日：2013-02-19
申请号：US12667573
申请日：2008-06-23
申请人： Michael A. Morich , Gordon D. Demeester , Jerome J. Griesmer , Torsten J. Solf , Volkmar Schulz , Bjoern Weissler
发明人： Michael A. Morich , Gordon D. Demeester , Jerome J. Griesmer , Torsten J. Solf , Volkmar Schulz , Bjoern Weissler
IPC分类号： G01V3/00
CPC分类号： G01T1/1603 , G01R33/3806 , G01R33/3856 , G01R33/481
摘要： In a hybrid PET-MR system, PET detector elements (30) are added in the bore (14), in close proximity to the gradient coils (16). Fluid coolant is supplied to transfer heat from the PET detector elements (30). Thermal insulation (80) insulates the fluid coolant and the PET detector elements (30) from the gradient coils (16). In some embodiments, a first coolant path (90) is in thermal communication with the electronics, a second coolant path (92) is in thermal communication with the light detectors, and a thermal barrier (94, 96) is arranged between the first and second coolant paths such that the first and second coolant paths can be at different temperatures (Te, Td). In some embodiments a sealed heat pipe (110) is in thermal communication with a heat sink such that working fluid in the heat pipe undergoes vaporization/condensation cycling to transfer heat from the detector elements to the heat sink.
摘要翻译： 在混合PET-MR系统中，将PET检测器元件（30）添加到孔（14）中，靠近梯度线圈（16）。 供应流体冷却剂以从PET检测器元件（30）传递热量。 绝热（80）使流体冷却剂和PET检测器元件（30）与梯度线圈（16）绝缘。 在一些实施例中，第一冷却剂路径（90）与电子设备热连通，第二冷却剂路径（92）与光检测器热连通，并且热障（94,96）布置在第一和第 第二冷却剂路径使得第一和第二冷却剂路径可处于不同的温度（Te，Td）。 在一些实施例中，密封的热管（110）与散热器热连通，使得热管中的工作流体经历蒸发/冷凝循环以将热量从检测器元件传递到散热器。
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公开(公告)号：US08334697B2
公开(公告)日：2012-12-18
申请号：US12531979
申请日：2008-01-16
IPC分类号： G01V3/00
CPC分类号： G01R33/481 , A61B5/0035 , A61B5/055 , G01R33/385 , G01R33/3875 , G01R33/421 , G01R33/4215 , G01R33/4808
摘要： A generally cylindrical set of coil windings (10, 30, 80) includes primary coil windings (12, 32, 82) and shield coil windings (14, 34, 84) at a larger radial position than the primary coil windings, and an arcuate or annular central gap (16, 36, 86) that is free of coil windings, has an axial extent (W) of at least ten centimeters, and spans at least a 180° angular interval. Connecting conductors (24, 44, 94) disposed at each edge of the central gap electrically connect selected primary and secondary coil windings. In a scanner setting, a main magnet (62, 64) is disposed outside of the generally cylindrical set of coil windings. In a hybrid scanner setting, an annular ring of positron emission tomography (PET) detectors (66) is disposed in the central gap of the generally cylindrical set of coil windings.
摘要翻译： 一般为圆柱形的线圈绕组（10,30,80）包括在比初级线圈绕组更大的径向位置处的初级线圈绕组（12,32,82）和屏蔽线圈绕组（14,34,84），以及弧形 或没有线圈绕组的环形中心间隙（16,36,86）具有至少十厘米的轴向范围（W）并且跨越至少180°的角度间隔。 设置在中心间隙的每个边缘处的连接导体（24,44,94）电连接所选择的初级和次级线圈绕组。 在扫描器设置中，主磁体（62,64）设置在大致圆柱形的线圈绕组的外侧。 在混合扫描器设置中，正电子发射断层摄影（PET）检测器（66）的环形环设置在大致圆柱形的线圈绕组组的中心间隙中。
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公开(公告)号：US20110115483A1
公开(公告)日：2011-05-19
申请号：US12742976
申请日：2008-12-12
申请人： Zhiyong Zhai , Robert Gauss , Eddy Yu Ping WONG , Michael A. Morich , Kevin M. Nieman , Gordon D. DeMeester
发明人： Zhiyong Zhai , Robert Gauss , Eddy Yu Ping WONG , Michael A. Morich , Kevin M. Nieman , Gordon D. DeMeester
IPC分类号： G01R33/44
CPC分类号： G01R33/3415 , G01R33/5659
摘要： A magnetic resonance coil comprises a first set of coil elements (54, 56, 80) operatively connectable with a transmit channel (66, 74) to couple with a transmit region of sensitivity for a selected load at a magnetic field strength greater than 3 Tesla, and a second set of coil elements (52, 54, 82) operatively connectable with a receive channel (66, 74) to couple with a receive region of sensitivity for the selected load at the magnetic field strength greater than 3 Tesla. The first set of coil elements is arranged proximate to but not surrounding the transmit region of sensitivity, and the second set of coil elements is arranged proximate to but not surrounding the receive region of sensitivity. The first set of coil elements and the second set of coil elements having at least one coil element (52, 56) not in common. The first and second sets of coil elements define transmit and receive regions of sensitivity for the selected load at the magnetic field strength greater than 3 Tesla that are substantially similar.
摘要翻译： 磁共振线圈包括可操作地与发射通道（66,74）连接的第一组线圈元件（54,56,80），以在大于3特斯拉的磁场强度下与选定负载的灵敏度的发射区域耦合 以及第二组线圈元件（52,54,82），其可操作地与接收通道（66,74）连接，以在大于3特斯拉的磁场强度下与所选择的负载的接收灵敏度区域耦合。 第一组线圈元件布置成靠近但不围绕灵敏度的发射区域，并且第二组线圈元件布置成接近但不包围灵敏度的接收区域。 第一组线圈元件和第二组线圈元件具有不共同的至少一个线圈元件（52,56）。 第一组和第二组线圈元件在大于3特斯拉的大于3特斯拉的磁场强度下为所选择的载荷定义灵敏度的发射和接收区域。
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46.发明申请公开(公告)号：US20100135559A1
公开(公告)日：2010-06-03
申请号：US12598484
申请日：2008-04-17
IPC分类号： G06K9/62
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。
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公开(公告)号：US07495443B2
公开(公告)日：2009-02-24
申请号：US10595862
申请日：2004-11-03
申请人： Christoph G. Leussler , Christian Findeklee , Michael A. Morich , Zhiyong Zhai , Gordon D. DeMeester
发明人： Christoph G. Leussler , Christian Findeklee , Michael A. Morich , Zhiyong Zhai , Gordon D. DeMeester
IPC分类号： G01V3/00
CPC分类号： G01R33/3415 , G01R33/34046 , G01R33/34076 , G01R33/345 , G01R33/3453 , G01R33/3635 , G01R33/3642 , G01R33/365 , G01R33/3678 , G01R33/422 , G01R33/5659
摘要： A radio frequency coil system (38) for magnetic resonance imaging includes a plurality of parallel spaced apart rungs (60) which each includes rung capacitors (68). An end cap (64) is disposed at a closed end (66) of the coil system (38). An RF shield (62) is connected to the end cap (64) and surrounds the rungs (60), extending in a direction substantially parallel to rungs (60). The RF coil system (38) may be used as birdcage, TEM, hybrid, combination birdcage and TEM, or other.
摘要翻译： 一种用于磁共振成像的射频线圈系统（38）包括多个平行隔开的梯级（60），每个梯级包括梯级电容器（68）。 端盖（64）设置在线圈系统（38）的封闭端（66）处。 RF屏蔽（62）连接到端盖（64）并且围绕梯级（60）沿着基本平行于梯级（60）的方向延伸。 RF线圈系统（38）可以用作鸟笼，TEM，混合，组合鸟笼和TEM等。
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公开(公告)号：US20080197848A1
公开(公告)日：2008-08-21
申请号：US11917010
申请日：2006-06-13
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。
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公开(公告)号：US06211677B1
公开(公告)日：2001-04-03
申请号：US09075117
申请日：1998-05-08
申请人： Michael Burl , Michael A. Morich
发明人： Michael Burl , Michael A. Morich
IPC分类号： G01V300
CPC分类号： G01R33/3635 , G01R33/34084 , G01R33/36
摘要： In a magnetic resonance imaging apparatus, a whole-body RF coil (42) disposed circumferentially around an examination region (14) is tuned to a first Larmor frequency, e.g., that of hydrogen. A first transmitter (44) transmits RF signals at the first Larmor frequency. A first T/R switch (40) electronically switches the whole-body RF coil (42) between a transmit mode in which it is electronically connected to the first transmitter (44) for exciting resonance in hydrogen nuclei, and a receive mode in which it is electronically connected to a first receiver channel for demodulating magnetic resonance signals received from resonating hydrogen nuclei. An insertable lung coil (70) is positioned inside the whole-body RF coil (42) around the examination region. The lung coil (70) is tuned, while the whole-body RF coil (42) is enabled, to a second Larmor frequency corresponding to a non-hydrogen nuclei such that the tuning compensates for reactance from the whole-body RF coil that is inductively coupled to the lung coil. A second T/R switch (80) electronically switches the lung coil (70) between a second transmitter (82) for exciting resonance in non-hydrogen nuclei, and a second receiver channel.
摘要翻译： 在磁共振成像装置中，围绕检查区域（14）周向设置的全身RF线圈（42）被调谐到第一拉莫尔频率，例如氢的频率。 第一发射机（44）以第一拉莫尔频率发射RF信号。 第一T / R开关（40）在其电子连接到第一发射器（44）的发射模式之间电子地切换全身RF线圈（42），用于激发氢核中的谐振，以及接收模式，其中 它被电连接到第一接收器通道，用于解调从谐振氢核接收的磁共振信号。 可插入的肺线圈（70）位于检查区域周围的全身RF线圈（42）的内部。 在全身RF线圈（42）被启用的同时，将肺线圈（70）调谐到对应于非氢核的第二拉莫尔频率，使得调谐补偿来自全身RF线圈的电抗 感应耦合到肺线圈。 第二T / R开关（80）在第二发射器（82）之间电子地切换肺线圈（70），用于激发非氢核中的谐振和第二接收器通道。
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50.发明授权Flexible open quadrature highpass ladder structure RF surface coil in magnetic resonance imaging 失效磁共振成像中的柔性开放正交高通梯结构RF表面线圈公开(公告)号：US06169401A
公开(公告)日：2001-01-02
申请号：US09200168
申请日：1998-11-25
申请人： Hiroyuki Fujita , Michael Burl , Michael A. Morich
发明人： Hiroyuki Fujita , Michael Burl , Michael A. Morich
IPC分类号： G01V300
CPC分类号： G01R33/3678
摘要： A magnetic imaging apparatus generates a main magnetic field longitudinally through an image region and excites magnetic resonance in selected nuclei in a patient or subject disposed in the image area. The resonating nuclei generate radio frequency magnetic resonance signals which are received by a quadrature highpass ladder surface coil (D). The highpass ladder coil includes a central leg 34 having a capacitive element Cv disposed symmetrically about a midpoint 44. A like number of additional legs 30, 32, 36, 38 are disposed parallel to and symmetrically on opposite side of the central leg. Side elements 40, 42 include capacitive elements CA which interconnect adjacent ends of each of the legs. The capacitive elements are disposed symmetrically about the midpoint 44 and are selected such that the coil supports at least two intrinsic resonant modes including an odd mode 50 and an even mode 52. The even mode is sensitive to fields in the plane of the coil and the odd mode is sensitive to fields in a plane orthogonal to the coil.
摘要翻译： 磁性成像装置通过图像区域纵向地产生主磁场，并且在设置在图像区域中的患者或对象中的选定细胞核中激发磁共振。 谐振核产生由正交高通梯面线圈（D）接收的射频磁共振信号。 高通梯形线圈包括具有围绕中点44对称设置的电容元件Cv的中心支腿34.相似数量的附加支脚30,32,36,38平行于对称地设置在中心支线的相对侧上。 侧面元件40,42包括互连每个腿的相邻端部的电容元件CA。 电容元件围绕中点44对称地设置，并且被选择为使得线圈支持包括奇数模式50和偶模式52的至少两个本征谐振模式。偶模对线圈的平面中的场敏感，并且 奇数模式对垂直于线圈的平面中的场敏感。
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