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1. 发明授权

US06831460B2 Coil structure with tapered conductive members for improved homogeneity in MRI 失效
标题翻译：具有锥形导电构件的线圈结构，用于改善MRI中的均匀性
公开(公告)号：US06831460B2
公开(公告)日：2004-12-14
申请号：US10068300
申请日：2002-02-05
申请人： Theodore J. Reisker , William J. Monski , Eric D. Reid , George J. Misic
发明人： Theodore J. Reisker , William J. Monski , Eric D. Reid , George J. Misic
IPC分类号： G01V300
CPC分类号： G01R33/34046
摘要： A coil for creating improved homogeneity in magnetic flux density in a radio frequency resonator for magnetic resonance imaging and spectroscopy of the human head. The coil has a plurality of conductive members. Each of the conductive members has a linear portion and a tapered portion. The conductive members are arranged to form a first opening having a first diameter and a second opening having a second diameter, with the second diameter being different from the first diameter. The tapered portions of the conductive members provide the coil with a substantially homogeneous pattern of magnetic flux density in at least one of three orthogonal imaging planes of the coil.
摘要翻译：一种线圈，用于在用于磁共振成像和人头的光谱的射频谐振器中产生改善的磁通密度均匀性。线圈具有多个导电构件。每个导电构件具有直线部分和锥形部分。导电构件布置成形成具有第一直径的第一开口和具有第二直径的第二开口，第二直径不同于第一直径。导电构件的锥形部分在线圈的三个正交成像平面中的至少一个中为线圈提供基本均匀的磁通密度图案。

2. 发明授权

US06344745B1 Tapered birdcage resonator for improved homogeneity in MRI 失效
标题翻译：锥形鸟笼共振器可改善MRI的均匀性
公开(公告)号：US06344745B1
公开(公告)日：2002-02-05
申请号：US09449256
申请日：1999-11-24
申请人： Theodore J. Reisker , William J. Monski , Eric D. Reid , George J. Misic
发明人： Theodore J. Reisker , William J. Monski , Eric D. Reid , George J. Misic
IPC分类号： G01V300
CPC分类号： G01R33/34046
摘要： A method for creating improved homogeneity in magnetic flux density in a radio frequency resonator for magnetic resonance imaging and spectroscopy of the human head. A tapered birdcage resonator is also provided. The tapered birdcage resonator includes two electrically conductive rings and a plurality of rods or conductor legs. The first electrically conductive ring forms an inferior end of the coil. The plurality of legs extends from the first electrically conductive ring. Each of the plurality of legs has a linear portion and a tapered portion. The second electrically conductive ring forms a superior end of the coil and is connected to the tapered portion of the plurality of legs.
摘要翻译：用于在用于磁共振成像和人头的光谱的射频谐振器中产生改善的磁通密度均匀性的方法。还提供了锥形鸟笼谐振器。锥形鸟笼谐振器包括两个导电环和多个杆或导体腿。第一导电环形成线圈的下端。多个腿从第一导电环延伸。多个腿部中的每一个具有直线部分和锥形部分。第二导电环形成线圈的上端并且连接到多个腿的锥形部分。

3. 发明授权

US5998999A Volume RF coils with integrated high resolution focus coils for magnetic resonance imaging 失效
标题翻译：具有集成高分辨率聚焦线圈的体积RF线圈用于磁共振成像
公开(公告)号：US5998999A
公开(公告)日：1999-12-07
申请号：US989487
申请日：1997-12-12
申请人： Mark A. Richard , Theodore J. Reisker
发明人： Mark A. Richard , Theodore J. Reisker
IPC分类号： G01R33/34 , G01R33/36 , G01V3/00
CPC分类号： G01R33/34046 , G01R33/3628
摘要： A magnetic resonance imaging apparatus includes a main magnet (12) for generating a main magnetic field in an examination region (14) and a radio frequency coil assembly. The radio frequency coil assembly transmits radio frequency pulses into the examination region (14) to induce magnetic resonance in selected dipoles disposed therein. The radio frequency coil assembly also receives signals from selected resonating dipoles. The radio frequency coil assembly includes a birdcage coil (60) having a plurality of conductive elements (64) constructed on a dielectric form positioned about the examination region (14). The birdcage coil (60) includes a plurality of capacitors (C1-C24) and corresponding plurality of series connected diode inductor pairs connected in parallel with each capacitor to form resonant trap circuits. The radio frequency coil assembly also includes at least one focus coil (62a-c) having a conductive loop placed on a thin dielectric layer attached to the birdcage coil (60) such that the focus coil (62a-c) is electrically insulated from the birdcage coil (60). The focus coil includes a plurality of capacitors connected in series and corresponding plurality of series connected diode inductor pairs connected in parallel with each capacitor.
摘要翻译：磁共振成像装置包括用于在检查区域（14）中产生主磁场的主磁体（12）和射频线圈组件。无线电频率线圈组件将射频脉冲发射到检查区域（14）中以在其中设置的选定偶极子中引起磁共振。射频线圈组件还接收来自所选谐振偶极子的信号。射频线圈组件包括鸟笼线圈（60），其具有构造在位于检查区域（14）周围的电介质形式上的多个导电元件（64）。鸟笼线圈（60）包括多个电容器（C1-C24）和与每个电容器并联连接的相应多个串联连接的二极管电感器对以形成谐振陷波电路。射频线圈组件还包括至少一个聚焦线圈（62a-c），其具有放置在连接到鸟笼线圈（60）的薄介电层上的导电回路，使得聚焦线圈（62a-c）与鸟笼线圈（60）。聚焦线圈包括串联连接的多个电容器和与每个电容器并联连接的多个串联的二极管电感器对。

4. 发明授权

US6051974A MRI endocavitary coils and decontamination 失效
标题翻译： MRI内脏线圈和去污
公开(公告)号：US6051974A
公开(公告)日：2000-04-18
申请号：US979053
申请日：1997-11-26
申请人： Theodore J. Reisker , David A. Molyneaux , John T. Carlon , Benjamin R. Stern , William O. Braum
发明人： Theodore J. Reisker , David A. Molyneaux , John T. Carlon , Benjamin R. Stern , William O. Braum
IPC分类号： A61B5/055 , G01R33/28 , H01F6/00 , H01F7/20 , G01V3/00
CPC分类号： G01R33/285
摘要： An endocavity RF coil assembly for an MRI apparatus includes a reusable probe (30). The reusable probe has a hollow outer cover (60) having a closed distal end and (62) an open proximate end (64). The distal end (62) is formed to fit into a cavity of a subject being examined. An active RF coil element (72) is rigidly formed about an internal sleeve (70) which is located within the distal end (62) of the outer cover (60). A tuning and matching circuit is disposed within the outer cover (60) on the proximate end (64) side of the active RF coil element (72). The tuning and matching circuit is arranged on a printed circuit board (74) and attached to the active RF coil element (72). An over-molded form (90) is connected to the proximate end (64) of the outer cover (60). The over-molded form (90) is arranged such that it seals the proximate end (64) of the outer cover (60) closed.
摘要翻译：用于MRI装置的内腔RF线圈组件包括可重复使用的探针（30）。可重复使用的探针具有中空的外盖（60），其具有封闭的远端和（62）敞开的近端（64）。远端（62）形成为适合被检查对象的空腔。主动RF线圈元件（72）围绕位于外盖（60）的远端（62）内部的内套筒（70）而刚性地形成。调谐和匹配电路设置在有源RF线圈元件（72）的近端（64）侧上的外盖（60）内。调谐和匹配电路布置在印刷电路板（74）上，并连接到有源RF线圈元件（72）。外模（90）连接到外盖（60）的近端（64）。整体模制形式（90）被布置成使得其封闭外盖（60）的近端（64）。

5. 发明授权

US5209233A Temperature sensing and control system for cardiac monitoring electrodes 失效
标题翻译：心脏监测电极温度感应和控制系统
公开(公告)号：US5209233A
公开(公告)日：1993-05-11
申请号：US653628
申请日：1991-02-11
申请人： G. Neil Holland , Douglas M. Blakeley , Theodore J. Reisker , David A. Molyneaux
发明人： G. Neil Holland , Douglas M. Blakeley , Theodore J. Reisker , David A. Molyneaux
IPC分类号： A61B5/0456 , A61B5/055 , A61B5/113 , A61B6/00 , G01N33/00 , G01R33/28 , G01R33/56 , G01R33/567
CPC分类号： G01R33/5673 , A61B5/0456 , A61B5/055 , A61B5/1135 , A61B5/411 , G01R33/28 , A61B5/7285 , A61B6/541 , Y10S128/901
摘要： A cardiac electrode (40) has a plug (48) which is frictionally received in a socket (50) of an electrical lead (56). An impedance (54) is connected in series between the electrical lead and the socket to pass ECG signals substantially unattenuated and for blocking radio frequency signals induced in the lead from reaching the socket and the electrode and heating the electrode to a sufficient temperature to burn the patient. The impedance includes an LC circuit (66, 68) which freely passes low frequency signals, such as cardiac signals, but which is tuned to resonance at radio frequencies, particularly at the frequency of resonance excitation and manipulation pulses of a magnetic resonance imager (A). Alternately, the impedance may include a resistive element for blocking the induced currents. A temperature sensor (60) is mounted in intimate contact with an electrically and thermally conductive socket portion (52) to sense the temperature of the electrode, indirectly. A temperature sensor lead (62), the cardiac lead (56), and a respiratory or other anatomical condition sensor are connected with a multiplexing means (140) which cyclically connects the output signals thereof with an analog to digital converter (142). The digital signals are converted to digital optical signals (102) to be conveyed along a light path (104) out of the examination region. The bits of the received digital signal are sorted (144) between an R-wave detector (120), a temperature limit check (122) which checks whether the temperature of the electrode exceeds preselected limits, and a respiratory detector (132).
摘要翻译：心电极（40）具有摩擦地容纳在电引线（56）的插座（50）中的插头（48）。阻抗（54）串联连接在电引线和插座之间以使ECG信号基本上不衰减，并阻止在引线中感应的射频信号到达插座和电极，并将电极加热到足够的温度以烧毁患者。该阻抗包括一个LC电路（66,68），它可以自由地通过诸如心脏信号的低频信号，但被调谐到无线电频率的共振，特别是在磁共振成像器（A）的共振激励和操纵脉冲的频率）。或者，阻抗可以包括用于阻挡感应电流的电阻元件。温度传感器（60）安装成与导电和导热插座部分（52）紧密接触以间接地感测电极的温度。温度传感器引线（62），心脏引线（56）以及呼吸或其他解剖条件传感器与将其输出信号与模数转换器（142）循环连接的多路复用装置（140）连接。数字信号被转换成数字光信号（102），沿着光路（104）输送出检查区域。所接收的数字信号的比特在R波检测器（120），检查电极的温度是否超过预定极限的温度极限检查（122）和呼吸检测器（132）之间进行排序（144）。

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