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1. 发明授权

US09968277B2 Magnetic resonance guidance of a shaft to a target zone 有权
公开(公告)号：US09968277B2
公开(公告)日：2018-05-15
申请号：US14007990
申请日：2012-04-04
申请人： Steffen Weiss , Ronaldus Frederik Johannes Holthuizen , Sascha Krueger , Peter Koken , Daniel Wirtz , Thomas Erik Amthor , Falk Uhlemann
发明人： Steffen Weiss , Ronaldus Frederik Johannes Holthuizen , Sascha Krueger , Peter Koken , Daniel Wirtz , Thomas Erik Amthor , Falk Uhlemann
IPC分类号： A61B5/055 , G01R33/28 , A61B5/06 , A61B5/00 , G01R33/34
CPC分类号： A61B5/055 , A61B5/064 , A61B5/6832 , A61B5/72 , G01R33/287 , G01R33/34084
摘要： A medical apparatus (1100) comprising a magnetic resonance imaging system and an interventional device (300) comprising a shaft (302, 1014, 1120). The medical apparatus further comprises a toroidal magnetic resonance fiducial marker (306, 600, 800, 900, 1000, 1122) attached to the shaft. The shaft passes through a center point (610, 810, 908, 1006) of the fiducial marker. The medical apparatus further comprises machine executable instructions (1150, 1152, 1154, 1156, 1158) for execution by a processor. The instructions cause the processor to acquire (100, 200) magnetic resonance data, to reconstruct (102, 202) a magnetic resonance image (1142), and to receive (104, 204) the selection of a target volume (1118, 1144, 1168). The instructions further cause the processor to repeatedly: acquire (106, 206) magnetic resonance location data (1146) from the fiducial marker and render (108, 212) a view (1148, 1162) indicating the position of the shaft relative to the target zone.

2. 发明授权

US09575146B2 Method of characterizing 有权
标题翻译：表征方法
公开(公告)号：US09575146B2
公开(公告)日：2017-02-21
申请号：US13882293
申请日：2011-10-26
申请人： Johan Van Den Brink , Ingmar Graesslin , Sascha Krueger , Steffen Weiss , Peter Vernickel
发明人： Johan Van Den Brink , Ingmar Graesslin , Sascha Krueger , Steffen Weiss , Peter Vernickel
IPC分类号： G01R33/36 , G01R33/24 , G01R33/44 , G01R33/561 , G01R33/58
CPC分类号： G01R33/36 , G01R33/246 , G01R33/44 , G01R33/5612 , G01R33/583
摘要： The invention relates to a method of characterizing the RF transmit chain of a magnetic resonance imaging scanner (1) using a local transmit/receive coil system (204; 210), comprising a first local NMR probe and a first local magnetic resonance coil, the first NMR probe being spatially located in immediate neighborhood to the first coil, a local receive coil system (206; 208), comprising a second local NMR probe and a second local magnetic resonance coil, the second NMR probe being spatially located in immediate neighborhood to the second coil, wherein the transmit chain comprises an external MR coil (9; 11; 12; 13), the method comprising: determining with the first magnetic resonance coil, a first MR signal phase evolution of the local RF transmit field generated by MR excitation of the first probe using the first magnetic resonance coil by measuring the RF response of the first probe upon said excitation, determining with the second magnetic resonance coil a second MR signal phase evolution of the local RF transmit field generated by MR excitation of the second probe using the external MR coil (9; 11; 12; 13) by measuring the RF response of the second probe upon said excitation, calculating a phase offset between the first and second MR signal phase evolution.
摘要翻译：本发明涉及一种使用本地发射/接收线圈系统（204; 210）来表征磁共振成像扫描仪（1）的RF发射链的方法，该系统包括第一局部NMR探针和第一局部磁共振线圈，空间上位于第一线圈周围的第一NMR探针，包括第二局部NMR探针和第二局部磁共振线圈的局部接收线圈系统（206; 208），所述第二NMR探针在空间上位于紧邻附近所述第二线圈，其中所述发射链包括外部MR线圈（9; 11; 12; 13），所述方法包括：利用所述第一磁共振线圈确定由MR产生的所述本地RF发射场的第一MR信号相位演变通过在所述激发时测量第一探针的RF响应，使用第一磁共振线圈激发第一探针，用第二磁共振线圈确定第二MR信号相位ev 使用外部MR线圈（9; 9）对第二探针的MR激发产生的局部RF发射场的清零。 11; 12; 13）通过在所述激励时测量第二探针的RF响应，计算第一和第二MR信号相位演变之间的相位偏移。

3. 发明授权

US08847072B2 Transmission cable for use in radio-frequency magnetic or electrical fields 有权
标题翻译：用于射频磁场或电场的传输电缆
公开(公告)号：US08847072B2
公开(公告)日：2014-09-30
申请号：US12665947
申请日：2008-06-27
申请人： Sascha Krueger , Bernd David , Oliver Lips , Steffen Weiss , Daniel Wirtz
发明人： Sascha Krueger , Bernd David , Oliver Lips , Steffen Weiss , Daniel Wirtz
IPC分类号： H02G3/00 , H01R4/00 , H02G3/06 , H02G15/08 , H01B7/00 , H01B11/02 , H01P1/10 , H01H1/20 , H01H1/36 , G01R33/28 , G01R33/36 , A61B19/00 , A61B18/00 , A61N1/08 , A61B18/14
CPC分类号： G01R33/36 , A61B18/14 , A61B2018/00178 , A61B2090/374 , A61N1/086 , G01R33/287 , G01R33/288 , G01R33/3664
摘要： A transmission cable including a transmission line, at least two electrically conductive line segments separated by a non-conductive gap, a bridging unit including at least one electrically conductive bridge segment capable of bridging the non-conductive gap, and a switching unit 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：一种传输电缆，包括传输线，由非导电间隙分开的至少两个导电线段，包括能够桥接非导电间隙的至少一个导电桥接段的桥接单元和布置成移动桥接单元和/或传输线，以通过使用桥接段闭合非导电间隙来电连接两个线段，或通过打开非导电间隙来电连接两个线段。

4. 发明申请

US20140018664A1 MAGNETIC RESONANCE GUIDANCE OF A SHAFT TO A TARGET ZONE 有权
标题翻译：对目标区域的磁共振指导
公开(公告)号：US20140018664A1
公开(公告)日：2014-01-16
申请号：US14007990
申请日：2012-04-04
申请人： Steffen Weiss , Ronaldus Frederik Johannes Holthuizen , Sascha Krueger , Peter Koken , Daniel Wirtz , Thomas Erik Amthor , Alk Uhlemann
发明人： Steffen Weiss , Ronaldus Frederik Johannes Holthuizen , Sascha Krueger , Peter Koken , Daniel Wirtz , Thomas Erik Amthor , Alk Uhlemann
IPC分类号： A61B5/055 , A61B5/00 , A61B5/06
CPC分类号： A61B5/055 , A61B5/064 , A61B5/6832 , A61B5/72 , G01R33/287 , G01R33/34084
摘要： A medical apparatus (1100) comprising a magnetic resonance imaging system and an interventional device (300) comprising a shaft (302, 1014, 1120). The medical apparatus further comprises a toroidal magnetic resonance fiducial marker (306, 600, 800, 900, 1000, 1122) attached to the shaft. The shaft passes through a center point (610, 810, 908, 1006) of the fiducial marker. The medical apparatus further comprises machine executable instructions (1150, 1152, 1154, 1156, 1158) for execution by a processor. The instructions cause the processor to acquire (100, 200) magnetic resonance data, to reconstruct (102, 202) a magnetic resonance image (1142), and to receive (104, 204) the selection of a target volume (1118, 1144, 1168). The instructions further cause the processor to repeatedly: acquire (106, 206) magnetic resonance location data (1146) from the fiducial marker and render (108, 212) a view (1148, 1162) indicating the position of the shaft relative to the target zone.
摘要翻译：一种包括磁共振成像系统和包括轴（302,1014,1120）的介入装置（300）的医疗装置（1100）。医疗装置还包括连接到轴的环形磁共振基准标记（306,600,800,900,1000,1122）。轴通过基准标记的中心点（610,810,908,1006）。医疗设备还包括用于由处理器执行的机器可执行指令（1150,1152,1154,1156,1158）。所述指令使得所述处理器获取（100,200）磁共振数据，以重建（102,202）磁共振图像（1142），并且接收（104,204）所述目标体积（1118,1144， 1168）。所述指令还使所述处理器重复地：从所述基准标记获取（106,206）磁共振位置数据（1146），并且渲染（108,212）指示所述轴相对于所述目标的位置的视图（1148,1162）区。

5. 发明授权

US08628525B2 Wireless interventional device and a system for wireless energy transmission 失效
标题翻译：无线介入设备和无线能量传输系统
公开(公告)号：US08628525B2
公开(公告)日：2014-01-14
申请号：US12519785
申请日：2007-12-17
申请人： Daniel Wirtz , Oliver Lips , Sascha Krueger , Bernd David , Steffen Weiss
发明人： Daniel Wirtz , Oliver Lips , Sascha Krueger , Bernd David , Steffen Weiss
IPC分类号： A61B18/18 , A61B19/00 , A61B5/05 , A61B5/00
CPC分类号： A61B5/07 , A61B5/055 , A61B2017/00221 , A61B2560/0219 , A61N1/3787 , G01R33/287
摘要： An interventional device (12) is configured to be positioned in a body and includes an electrically operable unit (E1, E2) configured to carry out an interaction with the body upon a receipt of electric power. The device further includes a sensor (2) configured for wirelessly receiving electromagnetic energy from a remote source. The sensor is configured as a resonant circuit (2a, 2b) which converts the received electromagnetic energy into the electric power. The electrically operable device may include a diagnostic and/or therapeutic module.
摘要翻译：介入装置（12）被配置为定位在主体中，并且包括电可操作单元（E1，E2），其被配置为在接收到电力时执行与身体的相互作用。该装置还包括被配置为从远程源无线地接收电磁能量的传感器（2）。传感器被配置为将接收到的电磁能转换成电力的谐振电路（2a，2b）。电可操作装置可以包括诊断和/或治疗模块。

6. 发明申请

US20120165653A1 MR imaging system with cardiac coil and defibrillator 审中-公开
标题翻译：具有心脏线圈和除颤器的MR成像系统
公开(公告)号：US20120165653A1
公开(公告)日：2012-06-28
申请号：US13391849
申请日：2010-09-15
申请人： Steffen Weiss , Bernd David , Oliver Lips , Sascha Krueger
发明人： Steffen Weiss , Bernd David , Oliver Lips , Sascha Krueger
IPC分类号： A61B5/055 , A61N1/39 , A61N1/04
CPC分类号： G01R33/3415 , A61B5/0044 , G01R33/28
摘要： The invention relates to a magnetic resonance imaging system comprising a main magnet coil (2) for generating a uniform, steady magnetic field within an examination volume, a number of gradient coils (4, 5, 6) for generating switched magnetic field gradients in different spatial directions within the examination volume, at least one cardiac RF coil (11) for transmitting RF pulses to and/or receiving MR signals from the chest region of a body (10) of a patient positioned in the examination volume, a control unit (13) for controlling the temporal succession of RF pulses and switched magnetic field gradients, and a reconstruction unit (15) for reconstructing a MR image from the MR signals. In order to enable quick and safe defibrillation at any time during a MR imaging procedure, the invention proposes that at least one opening (19, 22) is provided in the cardiac RF coil (11), through which opening (19, 22) a portion of the skin surface in the chest region of the body (10) is accessible, wherein the magnetic resonance imaging system further comprises a defibrillator unit (17) connected to at least one defibrillator electrode (23) fitting through the at least one opening (19, 22) provided in the cardiac RF coil (11). Alternatively, the invention proposes that at least one defibrillator cable (30) is affixed to the cardiac RF coil (11), wherein the defibrillator unit (17) is connectable to at least one defibrillator electrode pad (26) via the at least one defibrillator cable (30).
摘要翻译：本发明涉及一种磁共振成像系统，包括用于在检查体积内产生均匀的稳定磁场的主磁体线圈（2），用于产生不同的开关磁场梯度的梯度线圈（4,5,6）在检查体积内的空间方向，至少一个心脏RF线圈（11），用于将RF脉冲发送到和/或从定位在检查体积中的患者的身体（10）的胸部区域接收MR信号;控制单元 13），用于控制RF脉冲和切换磁场梯度的时间连续性;以及重建单元（15），用于从MR信号重构MR图像。为了在MR成像过程中的任何时间实现快速和安全的除颤，本发明提出在心脏RF线圈（11）中提供至少一个开口（19,22），开口（19,22）a 身体（10）的胸部区域中的皮肤表面的部分是可接近的，其中所述磁共振成像系统还包括除颤器单元（17），所述除颤器单元连接到至少一个除颤器电极（23），所述除颤器电极（23）通过所述至少一个开口 19，22）设置在心脏RF线圈（11）中。或者，本发明提出，至少一个除颤器电缆（30）固定到心脏RF线圈（11），其中除颤器单元（17）可以经由至少一个除颤器（17）连接到至少一个除颤器电极焊盘（26）电缆（30）。

7. 发明申请

US20130241553A1 METHOD OF CHARACTERIZING 有权
标题翻译：表征方法
公开(公告)号：US20130241553A1
公开(公告)日：2013-09-19
申请号：US13882293
申请日：2011-10-26
申请人： Johan Van Den Brink , Ingmar Graesslin , Sascha Krueger , Steffen Weiss , Peter Vernickel
发明人： Johan Van Den Brink , Ingmar Graesslin , Sascha Krueger , Steffen Weiss , Peter Vernickel
IPC分类号： G01R33/36 , G01R33/44
CPC分类号： G01R33/36 , G01R33/246 , G01R33/44 , G01R33/5612 , G01R33/583
摘要： The invention relates to a method of characterizing the RF transmit chain of a magnetic resonance imaging scanner (1) using a local transmit/receive coil system (204; 210), comprising a first local NMR probe and a first local magnetic resonance coil, the first NMR probe being spatially located in immediate neighborhood to the first coil, a local receive coil system (206; 208), comprising a second local NMR probe and a second local magnetic resonance coil, the second NMR probe being spatially located in immediate neighborhood to the second coil, wherein the transmit chain comprises an external MR coil (9; 11; 12; 13), the method comprising: determining with the first magnetic resonance coil, a first MR signal phase evolution of the local RF transmit field generated by MR excitation of the first probe using the first magnetic resonance coil by measuring the RF response of the first probe upon said excitation, determining with the second magnetic resonance coil a second MR signal phase evolution of the local RF transmit field generated by MR excitation of the second probe using the external MR coil (9; 11; 12; 13) by measuring the RF response of the second probe upon said excitation, calculating a phase offset between the first and second MR signal phase evolution.
摘要翻译：本发明涉及一种使用本地发射/接收线圈系统（204; 210）来表征磁共振成像扫描仪（1）的RF发射链的方法，该系统包括第一局部NMR探针和第一局部磁共振线圈，空间上位于第一线圈周围的第一NMR探针，包括第二局部NMR探针和第二局部磁共振线圈的局部接收线圈系统（206; 208），所述第二NMR探针在空间上位于紧邻附近所述第二线圈，其中所述发射链包括外部MR线圈（9; 11; 12; 13），所述方法包括：利用所述第一磁共振线圈确定由MR产生的所述本地RF发射场的第一MR信号相位演变通过在所述激发时测量第一探针的RF响应，使用第一磁共振线圈激发第一探针，用第二磁共振线圈确定第二MR信号相位ev 使用外部MR线圈（9; 9）对第二探针的MR激发产生的局部RF发射场的清零。 11; 12; 13）通过在所述激励时测量第二探针的RF响应，计算第一和第二MR信号相位演变之间的相位偏移。

8. 发明申请

US20110275951A1 ELECTROPHYSIOLOGY CATHETER 有权
标题翻译：电生理导管
公开(公告)号：US20110275951A1
公开(公告)日：2011-11-10
申请号：US13142432
申请日：2010-01-07
申请人： Oliver Lips , Bernd David , Sascha Krueger , Steffen Weiss
发明人： Oliver Lips , Bernd David , Sascha Krueger , Steffen Weiss
IPC分类号： A61B5/053 , A61B5/04
CPC分类号： A61B5/0422
摘要： The invention relates to electrophysiology catheter systems and their use, such as in an MRI environment, and in particular to analysis of electric signals from such. An electrophysiology (EP) catheter with a plurality of electrically isolated electrode segments arranged in longitudinally spaced bands around the catheter is used to detect electric signals. A workstation receives the electrical signals which are then processed by a processing unit. Electric signals from electrode segments can be used to determine roll angle information of the catheter in relation to patient anatomy by determining signals from electrode segments in contact with tissue. Also, electric signals can be used to extract a reference signal that can be used to correct for gradient induced artefacts.
摘要翻译：本发明涉及电生理学导管系统及其用途，例如在MRI环境中，特别涉及从其中分析电信号。使用具有多个电隔离电极段的电生理学（EP）导管，其围绕导管以纵向间隔的带布置，以检测电信号。工作站接收然后由处理单元处理的电信号。来自电极段的电信号可用于通过确定与组织接触的电极段的信号来确定导管相对于患者解剖结构的侧倾角信息。此外，电信号可以用于提取可用于校正梯度诱导伪像的参考信号。

9. 发明申请

US20100312091A1 MAGNETIC RESONANCE SAFETY MONITORING SYSTEMS AND METHODS 有权
标题翻译：磁共振安全监测系统及方法
公开(公告)号：US20100312091A1
公开(公告)日：2010-12-09
申请号：US12808404
申请日：2008-12-22
申请人： Sascha Krueger , Daniel Wirtz , Steffen Weiss
发明人： Sascha Krueger , Daniel Wirtz , Steffen Weiss
IPC分类号： A61B5/055 , G08B23/00
CPC分类号： G01R33/285 , G01R33/288
摘要： A magnetic resonance method comprises applying a radio frequency excitation in an examination region (14), measuring a magnetic resonance signal generated by the applied radio frequency excitation in a subject (16) in the examination region, monitoring a radio frequency parameter during the applying, and evaluating subject safety based on the monitoring. A magnetic resonance safety monitor (40) comprises an analyzer (42, 44, 46, 50) configured to (i) receive a radio frequency signal during magnetic resonance excitation, (ii) extract a radio frequency parameter from the received radio frequency signal, and (iii) evaluate subject safety based on the extracted radio frequency parameter, and a remediation module (54) configured to perform a remediation of the magnetic resonance excitation responsive to the evaluation (iii) indicating a potentially unsafe condition.
摘要翻译：磁共振方法包括在检查区域（14）中施加射频激励，测量由所述检查区域中的被检体（16）施加的射频激励产生的磁共振信号，在施加期间监视射频参数，并根据监测评估受试者的安全性。磁共振安全监视器（40）包括分析器（42,44,46,50），其被配置为（i）在磁共振激励期间接收射频信号，（ii）从所接收的射频信号中提取射频参数，以及（iii）基于提取的射频参数来评估对象安全性;以及修复模块（54），其被配置为响应于指示潜在不安全状况的评估（iii）来执行磁共振激励的修复。

10. 发明申请

US20100094123A1 TRANSMISSION LINE FOR RF SIGNALS WITHOUT MATCHING NETWORKS 有权
标题翻译：无匹配网络的射频信号传输线
公开(公告)号：US20100094123A1
公开(公告)日：2010-04-15
申请号：US12524001
申请日：2008-01-24
申请人： Oliver Lips , Bernd David , Sascha Krueger , Steffen Weiss
发明人： Oliver Lips , Bernd David , Sascha Krueger , Steffen Weiss
IPC分类号： A61B5/05
CPC分类号： G01R33/287 , G01R33/288 , G01R33/3628
摘要： The present invention relates to an electrically conductive transmission line for transmitting RF signals, in particular for transmitting MR signals between a transmission and/or receiving coil (11) and a transmitting and/or receiving unit (12), by which separate known matching networks can be avoided or reduced. A transmission line is proposed comprising a plurality of lead segments (31) coupled only by transformers (32, 33) having a transformer impedance ZL placed between two neighbouring lead segments, wherein for power matching of the two transformers (32, 33) placed at opposite ends of a lead segment (31) said lead segment (31) has a low lead segment impedance Zo and/or a high dielectric constant εr and wherein said lead segment (31) has a short length 1. Thus, the lead segments themselves provide the matching of the transformers, and separate matching circuits are no longer needed.
摘要翻译：本发明涉及一种用于发送RF信号的导电传输线，特别是用于在发射和/或接收线圈（11）与发射和/或接收单元（12）之间发射MR信号，通过该传输线单独的已知匹配网络可以避免或减少。提出一种传输线，其包括多个引线段（31），其仅由放置在两个相邻引线段之间的变压器阻抗ZL的变压器（32,33）耦合，其中为了将两个变压器（32,33）的功率匹配放置在引线段（31）的相对端，所述引线段（31）具有低引线段阻抗Zo和/或高介电常数ε，并且其中所述引线段（31）具有短的长度1.因此，引线段本身提供变压器的匹配，不再需要单独的匹配电路。

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