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公开(公告)号：DE50011850D1
公开(公告)日：2006-01-19
申请号：DE50011850
申请日：2000-11-16
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor： WEISS STEFFEN , LUEDEKE KAI-MICHAEL
Abstract: The invention relates to a method of and a device for exciting the nuclear magnetization in a limited volume of an object to be examined, utilizing a microcoil (L) which is present in the volume and is attached, for example, to an interventional instrument during the formation of a magnetic resonance image of the object to be examined. The excitation of the nuclear magnetization is performed by at least one RF pulse whose frequency spectrum does not overlap the range of the spin resonance spectrum, so that no nuclear magnetization is excited outside the close range of the microcoil in the object to be examined. The microcoil, however, is provided with an active or passive circuit (for example, it is wired together with at least one capacitance (C) and a non-linear component (D1, D2) so as to form a non-linear resonant circuit) which locally generates an RF signal from the RF pulse. The RF signal overlaps the spin resonance frequency and causes excitation of the nuclear magnetization exclusively in the close range of the microcoil. After measurement and appropriate signal processing, this nuclear magnetization is used either to determine the position of the microcoil for reproduction in the MR image of the object to be examined or to form an MR image of the close range of the microcoil. The invention also relates to a medical instrument for use in conjunction with the method.
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公开(公告)号：WO2009081379A3
公开(公告)日：2009-08-27
申请号：PCT/IB2008055482
申请日：2008-12-22
Applicant: PHILIPS INTELLECTUAL PROPERTY , KONINKL PHILIPS ELECTRONICS NV , KRUEGER SASCHA , WIRTZ DANIEL , WEISS STEFFEN
Inventor： KRUEGER SASCHA , WIRTZ DANIEL , WEISS STEFFEN
IPC: G01R33/28
CPC classification number: G01R33/285 , G01R33/288
Abstract: 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.
Abstract translation: 一种磁共振方法包括：在检查区域（14）中施加射频激励;测量由检查区域中的受检者（16）中的施加的射频激励产生的磁共振信号;在施加期间监测射频参数; 并根据监测评估主体安全。 一种磁共振安全监测器（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， （iii）基于所提取的射频参数评估受试者安全性;以及修复模块（54），其被配置为响应于评估（iii）指示潜在的不安全状况而执行磁共振激励的修复。
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3.发明专利
公开(公告)号：DE602008003929D1
公开(公告)日：2011-01-20
申请号：DE602008003929
申请日：2008-06-27
Inventor： KRUEGER SASCHA , DAVID BERND , LIPS OLIVER , WEISS STEFFEN , WIRTZ DANIEL
IPC: G01R33/28
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公开(公告)号：DE60132004T2
公开(公告)日：2008-12-04
申请号：DE60132004
申请日：2001-10-17
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor： RASCHE VOLKER , WEISS STEFFEN , OP DE BEEK JOHANNES C
IPC: A61B6/00
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公开(公告)号：AU2003248594A1
公开(公告)日：2003-09-16
申请号：AU2003248594
申请日：2003-02-26
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor： SINKUS RALPH , WEISS STEFFEN
IPC: G01R33/28 , A61B5/055 , G01R33/563
Abstract: In a method of elastography, diagnostic performance is improved in that the variation in time of the excursion whereby a region responds to excitation by mechanical oscillations is analyzed and the non-linear distortions are measured. Such non-linear distortions are a measure of the non-linear elastic properties of the region and constitute a diagnostically relevant item of information.
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Patent Agency Ranking
公开(公告)号：WO2013105002A3
公开(公告)日：2013-09-19
申请号：PCT/IB2013050021
申请日：2013-01-02
Applicant: KONINKL PHILIPS NV , PHILIPS INTELLECTUAL PROPERTY
Inventor： SMINK JOUKE , WEISS STEFFEN , KRUEGER SASCHA
IPC: A61B5/0408 , A61B5/055
CPC classification number: A61B5/04085 , A61B5/055 , A61B5/6805 , A61B5/6892 , A61B5/7203 , A61B2562/221
Abstract: The invention relates to an electrocardiograph sensor mat (100), the mat (100) comprising a multitude of electrodes (104) for acquiring cardiac signals and a plug (200), wherein the electrodes (104) are connected to the plug (200) by electric wires (102), wherein the wires (102) are segmented by switches (202), wherein the switches (202) are switchable between a closed state and an open state, wherein in the closed state the electrodes (104) are electrically connected to the plug (200) and wherein in the open state the electrodes (104) are electrically isolated from the plug (200).
Abstract translation: 本发明涉及一种心电图仪传感器垫（100），所述垫（100）包括用于获取心脏信号的多个电极（104）和插头（200），其中所述电极（104）连接到所述插头（200） 通过电线（102），其中电线（102）由开关（202）分段，其中开关（202）可在闭合状态和打开状态之间切换，其中在闭合状态下，电极（104）是电气 连接到插头（200），并且其中在打开状态下，电极（104）与插头（200）电隔离。
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公开(公告)号：WO2008032249A3
公开(公告)日：2008-06-12
申请号：PCT/IB2007053611
申请日：2007-09-07
Applicant: KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , LIPS OLIVER , DAVID BERND , GLEICH BERNHARD , KRUEGER SASCHA , WEISS STEFFEN , WIRTZ DANIEL
Inventor： LIPS OLIVER , DAVID BERND , GLEICH BERNHARD , KRUEGER SASCHA , WEISS STEFFEN , WIRTZ DANIEL
IPC: A61B5/055 , A61B5/042 , A61B5/0428
CPC classification number: A61B5/042 , A61B5/0428 , A61B5/055 , A61B2562/222 , A61N1/056 , A61N1/086 , A61N1/3625 , A61N1/3718 , G01R33/287
Abstract: 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 kO, in particular of at least 5 kO. 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.
Abstract translation: 本发明涉及一种导管（6），其包括：位于导管近侧的连接器（65,66），用于将导管连接到用于发送和/或接收信号的外部信号发送/接收单元（10）; 位于所述导管的远侧处的电极（63,64）以及包括用于电连接所述电极和所述连接器以在所述电极和所述连接器之间传输信号的电线（61,62）的电连接，其中所述电 连接具有至少1kO，特别是至少5kO的高电阻。 因此，本发明提供了一种解决方案，通过使用高电阻导线和/或集总电阻器作为导管内的连接件，在MR引导下的EP介入期间防止过度加热。
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公开(公告)号：DE602007005007D1
公开(公告)日：2010-04-08
申请号：DE602007005007
申请日：2007-09-07
Inventor： LIPS OLIVER , DAVID BERND , GLEICH BERNHARD , KRUEGER SASCHA , WEISS STEFFEN , WIRTZ DANIEL
Abstract: 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 kOmega, in particular of at least 5 kOmega. Thus, the present invention provides a solution to prevent excessive heating during EP interventions under MR guidance by using highly resistive wires and or lumped resistors as connections within catheters.
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公开(公告)号：DE50012524D1
公开(公告)日：2006-05-18
申请号：DE50012524
申请日：2000-11-27
Inventor： SCHAEFFTER TOBIAS DR , WEISS STEFFEN
Abstract: The invention relates to an MR device with means for localizing and/or visualizing a medical instrument (2) inserted into an object (1) to be examined. In order to construct such a device in a more economical and more reliable manner, according to the invention the medical instrument (2) is provided with a magnet device (3) which is controllable by means of a control unit (4, 5) in such a manner that information concerning the position of the magnet device (3) in MR data sets can be specifically changed. The invention also relates to a corresponding MR method.
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公开(公告)号：DE10209257A1
公开(公告)日：2003-09-11
申请号：DE10209257
申请日：2002-03-01
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor： SINKUS RALPH , WEISS STEFFEN
Abstract: In a method of elastography, diagnostic performance is improved in that the variation in time of the excursion whereby a region responds to excitation by mechanical oscillations is analyzed and the non-linear distortions are measured. Such non-linear distortions are a measure of the non-linear elastic properties of the region and constitute a diagnostically relevant item of information.
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