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    Externally moveable intracavity probe for MRI imaging and spectroscopy
    1.
    发明授权
    Externally moveable intracavity probe for MRI imaging and spectroscopy 失效
    外部可动的腔内探针，用于MRI成像和光谱学

    公开(公告)号：US5307814A

    公开(公告)日：1994-05-03

    申请号：US760463

    申请日：1991-09-17

    申请人： Herbert Y. Kressel ,  Edward J. Rhinehart ,  Mitchell Schnall ,  Robert E. Lenkinski ,  Yutaka Imai

    发明人： Herbert Y. Kressel ,  Edward J. Rhinehart ,  Mitchell Schnall ,  Robert E. Lenkinski ,  Yutaka Imai

    IPC分类号： G01R33/48 ,  A61B5/055 ,  A61F2/958 ,  A61M25/00 ,  G01R33/28 ,  G01R33/34 ,  A61M25/10

    CPC分类号： G01R33/341 ,  A61B5/055 ,  A61B5/4255 ,  G01R33/285 ,  A61M25/1011 ,  G01R33/34084

    摘要： An insertable intracavity probe for use in magnetic resonance imaging of an area of interest in a body cavity particularly the colon, has an elongate shaft with a handle at its proximal end and an inflatable balloon structure at its distal end. The balloon structure has an outer balloon containing a loop-type pickup coil for connection to an interfacing network. The coil is sandwiched between two internal separately inflatable balloons, and when the probe is inserted, the coil can be optimally positioned relative to the area of interest by controlled differential inflation of the balloons. The probe also has an insertable rod-like mandrel for providing twisting orbital-type movement of the balloon structure on the shaft, by rotation of the mandrel, useful to steer the probe along curves or bends in the body cavity when it is being inserted. In a modified form of the probe, the mandrel can be used to rotate the coil and the internal balloons as a unit within the outer balloon for optimal in situ angular positioning of the coil.

    摘要翻译： 用于在体腔特别是结肠中的感兴趣区域的磁共振成像的可插入腔内探针具有在其近端具有手柄的细长轴和在其远端处的可充气球囊结构。 球囊结构具有外球囊，其包含用于连接到接口网络的环形拾取线圈。 线圈被夹在两个内部单独可充气的气球之间，并且当插入探头时，线圈可以通过气囊的可控差动充气相对于感兴趣区域进行最佳定位。 探针还具有可插入的杆状心轴，用于通过心轴的旋转来提供气球结构在轴上的扭转轨道式运动，其用于在探测器被插入时沿曲线或弯曲部弯曲弯曲。 在探针的改进形式中，心轴可以用于将线圈和内部气球作为单元旋转到外部球囊内，用于线圈的最佳原位角定位。

    Intracavity probe and interface device for MRI imaging and spectroscopy
    2.
    发明授权
    Intracavity probe and interface device for MRI imaging and spectroscopy 失效
    用于MRI成像和光谱学的腔内探针和界面装置

    公开(公告)号：US5348010A

    公开(公告)日：1994-09-20

    申请号：US949918

    申请日：1992-09-24

    申请人： Mitchell D. Schnall ,  Robert E. Lenkinski ,  Herbert Y. Kressel ,  Howard M. Pollack ,  Theodore C. Claiborne ,  George J. Misic ,  Thomas R. Welch ,  Edward J. Rhinehart

    发明人： Mitchell D. Schnall ,  Robert E. Lenkinski ,  Herbert Y. Kressel ,  Howard M. Pollack ,  Theodore C. Claiborne ,  George J. Misic ,  Thomas R. Welch ,  Edward J. Rhinehart

    IPC分类号： A61B5/055 ,  A61F2/958 ,  A61M25/095 ,  G01R33/34 ,  G01R33/36 ,  A61B5/55

    CPC分类号： G01R33/341 ,  A61B5/055 ,  A61B5/4381 ,  A61M25/1011 ,  G01R33/34084 ,  A61M2025/1013 ,  A61M25/1002 ,  G01R33/34007 ,  G01R33/3657

    摘要： An insertable pickup probe and interface network for magnetic resonance imaging and spectroscopy. The pickup probe in the preferred embodiment is for use in imaging the male prostate and comprises an elongated shaft supporting a patient interface balloon at its distal end which contains a RF receiving coil. The interface balloon comprises an inflatabe inner balloon enclosed by a flexible outer balloon. The receiving coil is positioned between the inner and outer balloons and placed intimately adjacent the region of interest by inflating the inner balloon to expand outwardly against the outer balloon. In addition, a non-stretchable planar material is provided on the surface on the inner balloon adjacent the receiving coil for ensuring that the receiving coil is placed adjacent the region of interest. The inner balloon is inflated by an inflator cuff connected to the shaft and communicated to the inner balloon by a first lumen in the shaft. The receiving coil is electrically connected to an interconnecting cable which is connected to the proximal end of the shaft and communicated to the receiving coil by a second lumen in the shaft. An interface network is also provided which receives the interconnecting cable of the pickup probe and includes impedance matching means, tuning means, and decoupling means for interfacing the probe with a magnetic resonance imaging scanner. In addition, the interface includes an electronic circuit for automatically adjusting the control voltage of a varactor diode in a Pi network which comprises the tuning means.

    摘要翻译： 可插入的探头和用于磁共振成像和光谱学的接口网络。 优选实施例中的拾取探头用于成像男性前列腺，并且包括在其远端支撑患者接口球囊的细长轴，其包含RF接收线圈。 界面气囊包括由柔性外气囊包围的发泡内气囊。 接收线圈定位在内气囊和外气囊之间，通过使内气囊膨胀而相对于外球囊向外膨胀而紧密地邻近感兴趣区域。 此外，在邻近接收线圈的内球囊的表面上设置非伸缩平面材料，以确保接收线圈位于感兴趣区域附近。 内球囊被连接到轴的充气器套筒充气，并且通过轴中的第一内腔与内球囊相通。 接收线圈电连接到互连电缆，该互连电缆连接到轴的近端并通过轴中的第二内腔连接到接收线圈。 还提供接口网络，其接收拾取探针的互连电缆，并且包括阻抗匹配装置，调谐装置和用于将探针与磁共振成像扫描器对接的去耦装置。 此外，该接口包括用于在包括调谐装置的Pi网络中自动调节变容二极管的控制电压的电子电路。

    Probe for MRI imaging and spectroscopy particularly in the cervical region
    3.
    发明授权
    Probe for MRI imaging and spectroscopy particularly in the cervical region 失效
    探测MRI成像和光谱特别是在宫颈区域

    公开(公告)号：US5451232A

    公开(公告)日：1995-09-19

    申请号：US132152

    申请日：1993-10-05

    申请人： Edward J. Rhinehart ,  Herbert Y. Kresel ,  Mitchell Schnall ,  Robert E. Lenkinski ,  Barton Milestone

    发明人： Edward J. Rhinehart ,  Herbert Y. Kresel ,  Mitchell Schnall ,  Robert E. Lenkinski ,  Barton Milestone

    IPC分类号： A61B5/055 ,  A61F2/958 ,  A61M25/095 ,  G01R33/28 ,  G01R33/34 ,  A61M25/10

    CPC分类号： B82Y15/00 ,  A61B5/055 ,  G01R33/285 ,  A61M25/1002 ,  G01R33/34084

    摘要： An insertable intracavity probe for use in magnetic resonance imaging of an area of interest in a relatively inaccessible region of the body particularly the cervix is disclosed. The probe has an inflatable balloon structure with an internal pickup coil carried at the distal end of a shaft for rectal insertion of the coil and an inflatable anti-migration cuff to hold the probe in position and prevent outward migration thereof during a procedure. The balloon structure has an outer balloon shaped to facilitate insertion and accommodation of the coil to areas of the anatomy adjacent the cervix. Internally, the balloon structure has an inflatable balloon which can be used to adjust the shape of the coil to accommodate uniquely shaped anatomical areas.

    摘要翻译： 公开了一种可插入的腔内探针，用于在身体的相对不可接近的区域，特别是子宫颈中的感兴趣区域的磁共振成像。 探头具有可膨胀的球囊结构，其内部拾取线圈承载在轴的远端，用于直线插入线圈，以及可膨胀的防移动箍，以将探针保持在适当位置并防止在手术过程中向外移动探针。 球囊结构具有形状为便于将线圈插入和容纳到与子宫颈相邻的解剖结构的区域的外部球囊。 在内部，球囊结构具有可膨胀气球，其可用于调节线圈的形状以适应独特形状的解剖区域。

    System and method of obtaining images and spectra of intracavity structures using 3.0 Tesla magnetic resonance systems
    9.
    发明授权
    System and method of obtaining images and spectra of intracavity structures using 3.0 Tesla magnetic resonance systems 有权
    使用3.0特斯拉磁共振系统获得腔内结构的图像和光谱的系统和方法

    公开(公告)号：US07747310B2

    公开(公告)日：2010-06-29

    申请号：US10483945

    申请日：2003-03-13

    申请人： George J. Misic ,  Edward J. Rhinehart

    发明人： George J. Misic ,  Edward J. Rhinehart

    IPC分类号： A61B5/055

    CPC分类号： G01R33/285 ,  A61B5/055 ,  G01R33/34084 ,  G01R33/3628

    摘要： An MR system features an intracavity probe and associated interface device. The probe includes a shaft, a balloon at one end thereof, and a coil loop within the balloon. The loop has two drive capacitors and a tuning capacitor, all of which in series. A junction node between the drive capacitors serves as a ground for electrically balancing the loop. Diametrically opposite the node, the tuning capacitor enables the loop to resonate at the operating frequency of the MR system. The interface allows the MR system to couple the loop to a port of the MR system during a receive cycle thereof and decouple it from the port during a transmit cycle thereof. With its balloon inserted and inflated within a cavity of a patient, the probe allows the MR system to generate images and/or spectra of the region of interest using the MR signals received by the loop.

    摘要翻译： MR系统具有腔内探针和相关接口装置。 探针包括轴，其一端处的气囊和气囊内的线圈环。 该回路具有两个串联的驱动电容器和一个调谐电容器。 驱动电容器之间的结节点用作电平衡环路的接地。 与节点完全相反，调谐电容使得环路在MR系统的工作频率下谐振。 该接口允许MR系统在其接收周期期间将环路耦合到MR系统的端口，并在其发射周期期间将其与端口分离。 通过将气球插入并充气到患者的腔内，探针允许MR系统使用循环接收的MR信号来产生感兴趣区域的图像和/或光谱。