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1. 发明申请

WO2006076739A2 HIGH FIELD HEAD COIL FOR DUAL-MODE OPERATION IN MAGNETIC RESONANCE IMAGING 审中-公开
标题翻译：用于磁共振成像中双模操作的高场线圈
公开(公告)号：WO2006076739A2
公开(公告)日：2006-07-20
申请号：PCT/US2006002101
申请日：2006-01-17
申请人： INVIVO CORP , SAYLOR CHARLES A , LI YU
发明人： SAYLOR CHARLES A , LI YU
IPC分类号： G01R33/3415 , G01R33/34
CPC分类号： G01R33/3415 , G01R33/34046 , G01R33/3642 , G01R33/365
摘要： Embodiments of the subject invention can utilize a single coil structure for dual-mode operation. In a specific embodiment, a single coil structure can be used as a volume coil in the transmitting phase and as a phase array in the receiving phase. In an embodiment, a transmit coil array in accordance with the subject invention can be utilized for one or more of the following: 1) parallel RF excitation on an MRI scanner equipped with a multiple-channel transmitter; 2) serial RF excitation with the use of a switch system with a single channel transmitter; and 3) generation of a homogeneous B1 field for regular MRI with the use of a power splitter on a standard scanner. In a specific embodiment, the use of a concentric double loop coil with different tunings of inner and outer loops can be implemented. In an embodiment, the coil elements can be decoupled using the CRC mode of a concentric double loop coil. In an embodiment, a surface coil transmit array can provide better compatibility with a receive array. In a specific embodiment, an over-coupled technique can be used to improve the phase control of the transmitting pulse.
摘要翻译：本发明的实施例可以利用单线圈结构进行双模操作。在具体实施例中，单个线圈结构可以用作发射相位中的体积线圈，并且在接收阶段中用作相位阵列。在一个实施例中，根据本发明的发射线圈阵列可用于以下一个或多个：1）配备有多通道发射器的MRI扫描器上的并行RF激励; 2）使用具有单通道发射器的开关系统进行串行RF激励; 和3）在标准扫描仪上使用功率分配器产生用于常规MRI的均匀B1场。在具体实施例中，可以实现具有内圈和外圈的不同调谐的同心双环线圈的使用。在一个实施例中，线圈元件可以使用同心双环线圈的CRC模式去耦合。在一个实施例中，表面线圈发射阵列可以提供与接收阵列更好的兼容性。在具体实施例中，可以使用过耦合技术来改善发射脉冲的相位控制。

2. 发明申请

WO2006076739A3 HIGH FIELD RF HEAD COIL FOR HOMOGENEOUS TRANSMIT AND PHASED ARRAY RECEIVE MODE OPERATION IN MAGNETIC RESONANCE IMAGING 审中-公开
公开(公告)号：WO2006076739A3
公开(公告)日：2006-07-20
申请号：PCT/US2006/002101
申请日：2006-01-17
申请人： INVIVO CORPORATION , SAYLOR, Charles, A. , LI, Yu
发明人： SAYLOR, Charles, A. , LI, Yu
IPC分类号： G01R33/3415 , G01R33/34
摘要： Embodiments of the subject invention can utilize a single coil structure for dual-mode operation. In a specific embodiment, a single coil structure can be used as a volume coil in the transmitting phase and as a phase array in the receiving phase. In an embodiment, a transmit coil array in accordance with the subject invention can be utilized for one or more of the following: 1) parallel RF excitation on an MRI scanner equipped with a multiple-channel transmitter; 2) serial RF excitation with the use of a switch system with a single channel transmitter; and 3) generation of a homogeneous B1 field for regular MRI with the use of a power splitter on a standard scanner. In a specific embodiment, the use of a concentric double loop coil with different tunings of inner and outer loops can be implemented. In an embodiment, the coil elements can be decoupled using the CRC mode of a concentric double loop coil. In an embodiment, a surface coil transmit array can provide better compatibility with a receive array. In a specific embodiment, an over-coupled technique can be used to improve the phase control of the transmitting pulse.

3. 发明申请

WO2006076738A1 HIGH-FIELD MODE-STABLE RESONATOR FOR MRI COMPRISING ADDITIONAL RESONANT STRUCTURE 审中-公开
标题翻译：用于MRI包含附加谐振结构的高场模式稳定谐振器
公开(公告)号：WO2006076738A1
公开(公告)日：2006-07-20
申请号：PCT/US2006/002100
申请日：2006-01-17
申请人： INVIVO CORPORATION , SAYLOR, Charles, A.
发明人： SAYLOR, Charles, A.
IPC分类号： G01R33/34 , G01R33/36
CPC分类号： G01R33/3456 , G01R33/34046 , G01R33/422
摘要： Embodiments of the invention pertain to a resonator for use in magnetic resonance imaging. Embodiments of the subject invention pertain to a high-field mode-stable resonator for use in magnetic resonance imaging. Embodiments also pertain to a method of generating and/or receiving rf magnetic fields in a field of view (FOV) for magnetic resonance imaging. An embodiment can incorporate a shielded cylindrical resonator having 16 elements that are coupled to one another by a transmission line resonator.
摘要翻译：本发明的实施例涉及用于磁共振成像的谐振器。本发明的实施例涉及用于磁共振成像的高场模稳定谐振器。实施例还涉及在用于磁共振成像的视野（FOV）中产生和/或接收rf磁场的方法。实施例可以包括屏蔽的圆柱形谐振器，其具有通过传输线谐振器彼此耦合的16个元件。

4. 发明申请

WO2008078289A1 METHOD AND APPARATUS FOR OBTAINING ELECTROCARDIOGRAM (ECG) SIGNALS 审中-公开
标题翻译：用于获取电子信号（ECG）信号的方法和装置
公开(公告)号：WO2008078289A1
公开(公告)日：2008-07-03
申请号：PCT/IB2007/055234
申请日：2007-12-19
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , DUENSING, G., Randy , SAYLOR, Charles, A.
发明人： DUENSING, G., Randy , SAYLOR, Charles, A.
IPC分类号： A61B5/0402 , A61B5/055
CPC分类号： A61B5/0402 , A61B5/055
摘要： Embodiments of the subject invention relate to a method and apparatus for obtaining an electrocardiogram (ECG) signal. Embodiments can separate a true ECG signal from one or more signals due to electric fields caused by moving electrical charges. In a specific embodiment, an ECG signal can be separated from one or more electric fields caused by blood flow. An embodiment pertains to a joint MRI and diagnostic ECG system. In an embodiment, the joint diagnostic quality ECG can add information to a MRI cardiac study. This additional information can be useful for MR guided intervention treatments, such as locating tissue that created bad electrical arrhythmia. In an embodiment, the subject method and apparatus can be utilized to obtain an ECG for patient located in a magnetic field of 1.5 T or higher, such as in MRI systems with 1.5 T or higher magnetic fields. Embodiments of the invention can use flow encoding with a changing magnetic field, with dense electrical sensors and inversion of the EEG data, utilizing this information to extract the flow related signals. Further, inversion to the source distribution of the flow related signals can be accomplished.
摘要翻译：本发明的实施例涉及一种用于获得心电图（ECG）信号的方法和装置。实施例可以由于由移动电荷引起的电场而将真实ECG信号与一个或多个信号分离。在具体实施例中，可以将ECG信号与由血流引起的一个或多个电场分离。实施例涉及MRI和诊断ECG联合系统。在一个实施例中，联合诊断质量ECG可以向MRI心脏研究添加信息。这些附加信息可用于MR引导干预治疗，例如定位产生不良电气心律失常的组织。在一个实施例中，本发明的方法和装置可以用于获得位于1.5T或更高的磁场中的患者的ECG，例如在具有1.5T或更高磁场的MRI系统中。本发明的实施例可以使用具有变化的磁场的流动编码，具有密集的电传感器和EEG数据的反转，利用该信息来提取与流相关的信号。此外，可以实现对流相关信号的源分布的反转。

5. 发明申请

WO2006042267A1 METHOD AND APPARATUS FOR DISCRETE SHIELDING OF VOLUME RF COIL ARRAYS 审中-公开
标题翻译：用于体积RF线圈阵列的离散屏蔽的方法和装置
公开(公告)号：WO2006042267A1
公开(公告)日：2006-04-20
申请号：PCT/US2005/036642
申请日：2005-10-07
申请人： INVIVO CORPORATION , SAYLOR, Charles, A. , DUENSING, G., Randy
发明人： SAYLOR, Charles, A. , DUENSING, G., Randy
IPC分类号： G01R33/422 , G01R33/34
CPC分类号： G01R33/422 , G01R33/34046
摘要： The subject invention pertains to a technique and device that can isolate and separate resultant electromagnetic fields of volume coils at high frequency. In an embodiment, an RF shield can be used to isolate and separate resultant electromagnetic fields. In an embodiment, the shield can have a cylindrical shape that can form a partially closed volume in which an object to be imaged, or sample, can be inserted. In an embodiment, the RF shield can be part of a RF coil. In a specific embodiment, some parts of a volume coil can be inside a shield, and the other parts of a volume coil can be outside the shield. The shielding of some of the parts of a volume coil can create conductor patterns corresponding to the specific parts inside the shield and the specific parts outside the shield. In an embodiment, two or more conductor patterns can be placed in proximity to the same shield and either be driven independently, driven together, or act as receiving elements, combined or uncombined. This embodiment is advantageous because the combination of conductor patterns can be optimized by the flexibility of separating the fields of end-rings from the fields of leg currents.
摘要翻译：本发明涉及一种能够以高频隔离并分离体积线圈的合成电磁场的技术和装置。在一个实施例中，可以使用RF屏蔽来隔离和分离所得到的电磁场。在一个实施例中，屏蔽件可以具有可以形成部分闭合的体积的圆柱形形状，其中待成像对象或样品可插入其中。在一个实施例中，RF屏蔽可以是RF线圈的一部分。在具体实施例中，体积线圈的一些部分可以在屏蔽内部，并且体积线圈的其它部分可以在屏蔽外部。体积线圈的一些部分的屏蔽可以产生对应于屏蔽内的特定部分和屏蔽外部的特定部分的导体图案。在一个实施例中，可以将两个或更多个导体图案放置在相同屏蔽附近，并且独立地驱动，一起驱动，或者用作组合或未组合的接收元件。该实施例是有利的，因为可以通过将端环的领域与腿部电流的场分离的灵活性来优化导体图案的组合。

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