HYPERPOLARIZED CONTRAST AGENT DISPENSER FOR MAGNETIC RESONANCE IMAING
    1.
    发明申请
    HYPERPOLARIZED CONTRAST AGENT DISPENSER FOR MAGNETIC RESONANCE IMAING 审中-公开
    用于磁共振成像的超高对比度对比剂分配器

    公开(公告)号:US20120089010A1

    公开(公告)日:2012-04-12

    申请号:US13377831

    申请日:2010-06-23

    IPC分类号: A61B5/055

    摘要: A dispenser (132), a magnetic resonance imaging system (100), and a method for using hyperpolarized contrast agent (304) during a magnetic resonance imaging examination. The dispenser comprises an attachment component (136) for a face piece (138). The face piece is adapted for receiving the surface of a subject (114) such that when the subject inhales hyperpolarized contrast agent enters the respiratory system of the subject. The dispenser further comprises a reservoir (300) adapted for receiving the hyperpolarized contrast agent. The dispenser further comprises a gas flow (406) tube connected to the attachment component and a vaporizer (406, 408, 412, 510, 602, 606) for vaporizing the hyperpolarized contrast agent in the gas flow tube into a hyperpolarized vapor. The dispenser further comprises a controller (402) for controlling when the vaporizer vaporizes the hyperpolarized contrast agent.

    摘要翻译: 分配器(132),磁共振成像系统(100)以及在磁共振成像检查期间使用超极化造影剂(304)的方法。 分配器包括用于面件(138)的附接部件(136)。 面部件适于接纳被检体(114)的表面,使得当受试者吸入超极化造影剂进入受试者的呼吸系统时。 分配器还包括适于接收超极化造影剂的贮存器(300)。 分配器还包括连接到附接部件的气流(406)管和用于将气体流管中的超极化造影剂蒸发成超极化蒸气的蒸发器(406,408,412,510,602,606)。 分配器还包括控制器(402),用于控制何时蒸发器蒸发超极化造影剂。

    DYNAMIC NUCLEAR POLARIZATION APPARATUS WITH SAMPLE TRANSPORT SYSTEM
    2.
    发明申请
    DYNAMIC NUCLEAR POLARIZATION APPARATUS WITH SAMPLE TRANSPORT SYSTEM 审中-公开
    动态核极化装置与样品运输系统

    公开(公告)号:US20120256630A1

    公开(公告)日:2012-10-11

    申请号:US13516747

    申请日:2010-12-28

    IPC分类号: G01R33/28

    摘要: The invention relates to a dynamic nuclear polarization apparatus (116) for continuous provision of hyperpolarized samples (114) comprising dynamically nuclear polarized nuclear spins, the apparatus (116) comprising a polarization region (106) for polarization of said nuclear spins resulting in said hyperpolarized samples, wherein the apparatus (116) further comprises: a cryostat (102) for cooling the samples (114) in the polarization region (106), a magnet (100) for providing a magnetic field to the cooled samples in the polarization region (106), a radiation source (112) for concurrently to the magnetic field provision providing a nuclear polarizing radiation to the polarization region (106) for receiving the hyperpolarized samples, a sample transport system (104) for continuously receiving unpolarized samples (114), transporting the unpolarized samples to the polarization region (106) for nuclear spin polarization and providing the resulting hyperpolarized samples (114).

    摘要翻译: 本发明涉及用于连续提供包括动态核偏振核自旋的超极化样本(114)的动态核极化装置(116),所述装置(116)包括用于所述核自旋的极化的偏振区域(106),导致所述超极化 样品,其中所述装置(116)还包括:用于冷却所述偏振区域(106)中的样品(114)的低温恒温器(102),用于向所述偏振区域中的所述冷却样品提供磁场的磁体(100) 106),用于与磁场提供同时提供用于接收超极化样本的偏振区域(106)的核偏振辐射的辐射源(112),用于连续接收非偏振样本(114)的样本传输系统(104) 将非偏振样品运送到用于核自旋极化的偏振区域(106),并提供所得到的超极化样本(114)。

    SUPERCONDUCTING MAGNET SYSTEM WITH COOLING SYSTEM
    3.
    发明申请
    SUPERCONDUCTING MAGNET SYSTEM WITH COOLING SYSTEM 审中-公开
    具有冷却系统的超级磁体系统

    公开(公告)号:US20100267567A1

    公开(公告)日:2010-10-21

    申请号:US12746778

    申请日:2008-12-03

    IPC分类号: H01F6/04 G01R33/3815

    CPC分类号: G01R33/3815 H01F6/04

    摘要: A magnet system, in particular for a magnetic resonance examination system, comprises a superconductive main magnet having a near group of coil windings and a remote group of coil windings. A gradient coil system forms a source of power dissipation into at least part of the coil windings. The near group of coil windings and the remote group of coil windings are near and remote from the source of power dissipation, respectively A cooling system has a high-temperature cooling station and a low-temperature cooling station. The high-temperature cooling station cools mainly the near group of coil windings. The low temperature cooling station cools mainly the remote group of coil windings. The near and remote group optionally are made of different superconductive materials. Thus, additional degrees of freedom are achieved which allow less expensive magnet design.

    摘要翻译: 特别是用于磁共振检查系统的磁体系统包括具有近组线圈绕组和远程线圈绕组的超导主磁体。 梯度线圈系统形成至少部分线圈绕组的功率耗散源。 近组线圈绕组和远端线圈绕组分别靠近和远离功率源,A冷却系统有一个高温冷却站和一个低温冷却站。 高温冷却站主要冷却近组线圈绕组。 低温冷却站主要冷却远程组的线圈绕组。 近距离和远程组可选地由不同的超导材料制成。 因此,实现了允许较便宜的磁体设计的附加自由度。

    ELECTROMAGNET WITH LAMINATED FERROMAGNETIC CORE AND SUPERCONDUCTING FILM FOR SUPPRESSING EDDY MAGNETIC FIELD
    4.
    发明申请
    ELECTROMAGNET WITH LAMINATED FERROMAGNETIC CORE AND SUPERCONDUCTING FILM FOR SUPPRESSING EDDY MAGNETIC FIELD 审中-公开
    具有层压铁磁芯的电磁体和用于抑制EDDY磁场的超导膜

    公开(公告)号:US20100304976A1

    公开(公告)日:2010-12-02

    申请号:US12808411

    申请日:2008-12-19

    摘要: An electromagnet comprises: a ferromagnetic core (50, 72); electrically conductive windings (34, 76) disposed around the ferromagnetic core such that current flowing in the windings magnetizes the ferromagnetic core; and a superconducting film (60, 80, 82) arranged to support eddy current cancelling supercurrent that suppresses eddy current formation in the ferromagnetic core when the windings magnetize the ferromagnetic core. A magnetic resonance scanner embodiment includes a main magnet (20) generating a static magnetic field and a magnetic field gradient system (30) with a plurality of said electromagnets (34, 50, 60) configured to superimpose selected magnetic field gradients on the static magnetic field.

    摘要翻译: 电磁铁包括:铁磁芯(50,72); 布置在铁磁芯周围的导电绕组(34,76),使得在绕组中流动的电流使铁磁芯磁化; 以及布置成支撑涡流消除超导电流的超导膜(60,80,82),当绕组磁化铁磁芯时,其抑制铁磁芯中的涡流形成。 磁共振扫描器实施例包括产生静磁场的主磁体(20)和具有多个所述电磁体(34,50,60)的磁场梯度系统(30),所述多个所述电磁体被配置为将选定的磁场梯度叠加在静磁 领域。

    TRANSMISSION CABLE FOR USE IN RADIO-FREQUENCY MAGNETIC OR ELECTRICAL FIELDS
    5.
    发明申请
    TRANSMISSION CABLE FOR USE IN RADIO-FREQUENCY MAGNETIC OR ELECTRICAL FIELDS 有权
    用于无线电频率电磁场的变速电缆

    公开(公告)号:US20100181109A1

    公开(公告)日:2010-07-22

    申请号:US12665947

    申请日:2008-06-27

    IPC分类号: H01B7/00

    摘要: A transmission cable for use in an elongate medical device (420) such as a catheter, guide wire, etc., wherein the transmission cable is capable of being switched to an MR-safe mode only when necessary, while retaining its optimal electrical transmission properties otherwise, is disclosed herein. The transmission cable comprises a transmission line including at least two electrically conductive line segments (104a, 104b) separated by a non-conductive gap (106a), a bridging unit comprising at least one electrically conductive bridge segment (108a) capable of bridging the non-conductive gap, and a switching unit (112) arranged to move the bridging unit and/or the transmission line to electrically connect the two line segments by closing the non-conductive gap using the bridge segment or to electrically disconnect the two line segments by opening the non-conductive gap.

    摘要翻译: 一种用于诸如导管,导丝等细长医疗设备(420)的传输电缆,其中传输电缆仅在必要时能够切换到MR安全模式,同时保持其最佳电气传输特性 否则,在此公开。 传输电缆包括传输线,传输线包括由非导电间隙(106a)隔开的至少两个导电线段(104a,104b);桥接单元,包括至少一个导电桥段(108a) 以及开关单元(112),其布置成使桥接单元和/或传输线移动以通过使用桥接段闭合非导电间隙来电连接两个线段,或者通过 打开非导电间隙。

    CATHETER AND MEDICAL ASSEMBLY
    6.
    发明申请
    CATHETER AND MEDICAL ASSEMBLY 有权
    导管和医疗装置

    公开(公告)号:US20100041977A1

    公开(公告)日:2010-02-18

    申请号:US12440252

    申请日:2007-09-07

    摘要: The present invention relates to a catheter (6) comprising: a connector (65, 66) at a proximal side of the catheter for connecting the catheter to an external signal transmission/receiving unit (10) for transmitting and/or receiving signals, an electrode (63, 64) at a distal side of the catheter, and an electrical connection including an electrical wire (61, 62) for electrically connecting the electrode and the connector for the transmission of signals between the electrode and the connector, wherein the electrical connection has a high electrical resistance of at least 1 kΩ, in particular of at least 5 kΩ. Thus, the present invention provides a solution to prevent excessive heating during EP interventions under MR guidance by using by using highly resistive wires and or lumped resistors as connections within catheters.

    摘要翻译: 本发明涉及一种导管(6),包括:在导管的近侧的连接器(65,66),用于将导管连接到用于传输和/或接收信号的外部信号传输/接收单元(10), 电极(63,64),以及包括用于电连接电极和连接器以用于在电极和连接器之间传输信号的电线(61,62)的电连接,其中电气 连接具有至少1kΩ和OHgr的高电阻,特别是至少5kΩ。 因此,本发明提供了一种用于在MR引导下的EP干预期间通过使用高电阻丝和/或集中电阻器作为导管内的连接使用来防止过度加热的解决方案。

    TRANSMISSION LINE FOR USE IN MAGNETIC RESONANCE SYSTEM
    7.
    发明申请
    TRANSMISSION LINE FOR USE IN MAGNETIC RESONANCE SYSTEM 有权
    用于磁共振系统的传输线

    公开(公告)号:US20100013484A1

    公开(公告)日:2010-01-21

    申请号:US12520182

    申请日:2007-12-20

    IPC分类号: G01R33/44

    CPC分类号: G01R33/287 G01R33/288

    摘要: An electrically conductive transmission cable for supplying a DC signal safely to an electrical device in the presence of radio-frequency (RF) fields in a magnetic resonance (MR) is disclosed herein. The transmission cable comprises a transmission line (STL) comprising at least a first segment (S1) and a second segment (S2), wherein the first and second segments are electrically connected to each other by a reactive coupling unit (103), and a rectifier unit (101) connected to the transmission line and configured to extract the DC signal (203) from the modulated DC signal (201). The extracted DC signal may be supplied to an electrical device or used for cardiac pacing. The transmission cable finds application in auxiliary devices used in an MR environment, for example an interventional catheter with or without an active tracking circuit (301).

    摘要翻译: 本文公开了一种用于在磁共振(MR)中存在射频(RF)场的情况下将DC信号安全地提供给电气设备的导电传输电缆。 传输电缆包括至少包括第一段(S1)和第二段(S2)的传输线(STL),其中第一和第二段通过无功耦合单元(103)彼此电连接,并且 整流单元(101),连接到所述传输线并且被配置为从所述调制的DC信号(201)提取所述DC信号(203)。 所提取的DC信号可以被提供给电气设备或用于心脏起搏。 传输电缆可用于在MR环境中使用的辅助设备中,例如具有或不具有主动跟踪电路(301)的介入导管。

    Transmission line for RF signals without matching networks
    8.
    发明授权
    Transmission line for RF signals without matching networks 有权
    射频信号传输线,无匹配网络

    公开(公告)号:US08571630B2

    公开(公告)日:2013-10-29

    申请号:US12524001

    申请日:2008-01-24

    IPC分类号: A61B5/05

    摘要: An electrically conductive transmission line for transmitting RF signals, in particular for transmitting MR signals between a transmission and/or receiving coil and a transmitting and/or receiving unit, by which separate known matching networks can be avoided or reduced. A transmission line is proposed comprising a plurality of lead segments coupled by transformers having a transformer impedance ZL placed between two neighboring lead segments, wherein for power matching of the two transformers placed at opposite ends of a lead segment, the lead segment has a lead segment impedance Z0 or a dielectric constant ∈r and wherein the lead segment has a short length l. Thus, the lead segments themselves provide the matching of the transformers, and separate matching circuits are no longer needed.

    摘要翻译: 用于发送RF信号的导电传输线,特别是用于在发射和/或接收线圈与发射和/或接收单元之间发射MR信号,通过该传输线可以避免或减少单独的已知匹配网络。 提出了一种传输线,其包括由变压器耦合的多个引线段,所述变压器具有置于两个相邻引线段之间的变压器阻抗ZL,其中对于放置在引线段相对端的两个变压器的功率匹配,引线段具有引线段 阻抗Z0或介电常数Er,并且其中引线段具有短的长度l。 因此,引线段本身提供变压器的匹配,并且不再需要单独的匹配电路。

    Transmission line for use in magnetic resonance system
    9.
    发明授权
    Transmission line for use in magnetic resonance system 有权
    用于磁共振系统的传输线

    公开(公告)号:US08228065B2

    公开(公告)日:2012-07-24

    申请号:US12520182

    申请日:2007-12-20

    IPC分类号: G01V3/00 A61B5/05

    CPC分类号: G01R33/287 G01R33/288

    摘要: An electrically conductive transmission cable for supplying a DC signal safely to an electrical device in the presence of radio-frequency (RF) fields in a magnetic resonance (MR) is disclosed herein. The transmission cable comprises a transmission line (STL) comprising at least a first segment (S1) and a second segment (S2), wherein the first and second segments are electrically connected to each other by a reactive coupling unit (103), and a rectifier unit (101) connected to the transmission line and configured to extract the DC signal (203) from the modulated DC signal (201). The extracted DC signal may be supplied to an electrical device or used for cardiac pacing. The transmission cable finds application in auxiliary devices used in an MR environment, for example an interventional catheter with or without an active tracking circuit (301).

    摘要翻译: 本文公开了一种用于在磁共振(MR)中存在射频(RF)场的情况下将DC信号安全地提供给电气设备的导电传输电缆。 传输电缆包括至少包括第一段(S1)和第二段(S2)的传输线(STL),其中第一和第二段通过无功耦合单元(103)彼此电连接,并且 整流单元(101),连接到所述传输线并且被配置为从所述调制的DC信号(201)提取所述DC信号(203)。 所提取的DC信号可以被提供给电气设备或用于心脏起搏。 传输电缆可用于在MR环境中使用的辅助设备中,例如具有或不具有主动跟踪电路(301)的介入导管。

    CATHETER INTERFACING
    10.
    发明申请
    CATHETER INTERFACING 审中-公开
    导管接口

    公开(公告)号:US20110227694A1

    公开(公告)日:2011-09-22

    申请号:US13130369

    申请日:2009-11-18

    IPC分类号: G05B23/02

    摘要: The present invention relates to a device (100) and method for interfacing a signal transmission/reception device (200) and a catheter (300). A signal transmitted by the signal transmission/reception device (200) and supplied to the device (100) via a first interface (102, 104, 106, 108) can be sensed by a first sensor (114). The sensed signal may be adjusted by an adjustment unit (116). The adjusted signal can be output via a second interface (110, 112) and supplied to the catheter (300). In this way, a resistance loss caused by a conductor (302, 304) of the catheter (300) may be compensated for.

    摘要翻译: 本发明涉及一种用于连接信号发送/接收装置(200)和导管(300)的装置(100)和方法。 信号发送/接收设备(200)发送并通过第一接口(102,104,106,108)提供给设备(100)的信号可由第一传感器(114)感测。 可以通过调节单元(116)来调节感测到的信号。 经调节的信号可经由第二接口(110,112)输出并提供给导管(300)。 以这种方式,可以补偿由导管(300)的导体(302,304)引起的电阻损耗。