公开(公告)号：US20150177342A1

公开(公告)日：2015-06-25

申请号：US14401008

申请日：2013-05-03

Applicant: KONINKLIJKE PHILIPS N.V. Q

Inventor： Oliver Lips ,  Christoph Leussler

IPC: G01R33/34 ,  G01R33/28 ,  G01R33/54 ,  G01R33/387 ,  G01R33/36 ,  G01R33/58

CPC classification number: G01R33/34 ,  G01R33/288 ,  G01R33/3415 ,  G01R33/3657 ,  G01R33/3664 ,  G01R33/387 ,  G01R33/543 ,  G01R33/583

Abstract: The invention relates to a feeding circuit arrangement (18) for supplying a radio frequency signal to a plurality of coil elements (14) of a magnetic resonance coil system (12), wherein the circuit arrangement (18) comprises a main line (20) for connecting a radio frequency signal source (16); a plurality of feeding lines (22), each feeding line (22) for connecting a corresponding coil element (14) of the coil system (14); a power divider (24) arranged between the main line (20) and the plurality of feeding lines (22) for distributing the signal on the main line (20) to each of the feeding lines (22), wherein at least one of the feeding lines (22) comprises a controllable switching circuit (26) with a switching element (28) for connecting/disconnecting of two resulting line sections (30, 32) of the feeding line (22), a first line section (30) on the divider side and a second line section (32) on the side connectable to the coil element (14), and wherein the switching circuit (26) further comprises at least one connectable termination element (44) for line termination of the first line section (30) or the main line (20) comprises a circulator device (60) interconnected with a termination means (62). The invention further relates to a corresponding parallel transceiver system (10).

Abstract translation: 本发明涉及一种用于向磁共振线圈系统（12）的多个线圈元件（14）提供射频信号的馈电电路装置（18），其中电路装置（18）包括主线（20） 用于连接射频信号源（16）; 多个供电管线（22），用于连接线圈系统（14）的相应的线圈元件（14）的每个馈送线（22）。 布置在所述主线路（20）和所述多条馈电线路（22）之间的功率分配器（24），用于将所述主线路（20）上的信号分配到所述馈线（22）中的至少一个， 馈送线路（22）包括具有开关元件（28）的可控开关电路（26），用于连接/断开馈送线路（22）的两个所得线路部分（30,32），第一线路段（30）在 分隔器侧和在可连接到线圈元件（14）的一侧上的第二线段（32），并且其中开关电路（26）还包括至少一个可连接终端元件（44），用于第一线路段 （30）或主线（20）包括与端接装置（62）互连的环行器装置（60）。 本发明还涉及相应的并行收发器系统（10）。

公开(公告)号：US20150130466A1

公开(公告)日：2015-05-14

申请号：US14405298

申请日：2013-05-14

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Oliver Lips ,  Falk Uhlemann ,  Volkmar Schulz

IPC: G01R33/345 ,  G01R33/34 ,  G01R33/422

CPC classification number: G01R33/3456 ,  G01R33/34076 ,  G01R33/3453 ,  G01R33/422 ,  G01R33/481 ,  G01R33/56563 ,  G01R33/5659

Abstract: A TEM resonator system is disclosed comprising at least two TEM resonators (21,31; 22, 32), especially in the form of TEM volume coils, and especially for use in an MR imaging system or apparatus for transmitting RF excitation signals and/or for receiving MR signals into/from an examination object or a part thereof, respectively, wherein the TEM resonators are arranged and displaced along a common longitudinal axis and wherein an intermediate RF shield (4) is positioned in longitudinal direction between the two TEM resonators for at least substantially preventing electromagnetic radiation from emanating from between the first TEM resonator and the second TEM resonator into the surroundings. A PET detector and/or another supplementary element can be placed in the volume between the two TEM resonators.

Abstract translation: 公开了一种TEM谐振器系统，其包括至少两个TEM谐振器（21,31; 22,32），特别是TEM体积线圈的形式，并且特别用于用于传输RF激励信号的MR成像系统或装置和/或 用于分别从检查对象或其一部分接收MR信号，其中TEM谐振器沿着共同的纵向轴线布置和移位，并且其中在两个TEM谐振器之间沿纵向定位中间RF屏蔽件（4），用于 至少基本上防止电磁辐射从第一TEM谐振器和第二TEM谐振器之间发射到周围环境中。 PET检测器和/或另外的补充元件可以放置在两个TEM谐振器之间的体积中。

公开(公告)号：US20150035533A1

公开(公告)日：2015-02-05

申请号：US14378116

申请日：2013-02-01

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Oliver Lips ,  Sascha Krueger ,  Marinus Johannes Adrianus Maria Van Helvoort

IPC: G01R33/28 ,  A61B19/00 ,  A61M25/01 ,  G01R33/36

CPC classification number: G01R33/287 ,  A61B90/39 ,  A61B2090/3954 ,  A61M25/0127 ,  G01R33/36 ,  G01R33/3621 ,  G01R33/3692

Abstract: An active position marker system comprising at least one active position marker (10) and a remote transceiver unit (20) for communicating with the position marker is disclosed. Basically, the position marker (10) comprises a local RF receive coil (11) for receiving MR signals which are excited in a local volume, and a parametric amplifier (14) for amplifying and upconverting the frequency of the received MR signal into at least one microwave sideband frequency signal. This microwave signal is transmitted wirelessly or wire-bound to the transceiver unit for downconverting the same and supplying it to an image processing unit of an MR imaging apparatus.

Abstract translation: 公开了一种包括至少一个有效位置标记（10）和用于与位置标记通信的远程收发器单元（20）的主动位置标记系统。 基本上，位置标记（10）包括用于接收在局部体积中被激励的MR信号的本地RF接收线圈（11）和用于将所接收的MR信号的频率放大和上变频至少至少 一个微波边带频率信号。 该微波信号被无线地或有线地发送到收发器单元，用于对其进行下变频并将其提供给MR成像设备的图像处理单元。

公开(公告)号：US12085598B2

公开(公告)日：2024-09-10

申请号：US17606804

申请日：2020-04-24

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Peter Vernickel ,  Oliver Lips

IPC: G01R31/08 ,  G01R33/36

CPC classification number: G01R31/083 ,  G01R33/36

Abstract: The invention relates to the field of magnetic resonance, and in particular to determining a location of an error in a supply or signal line (12). Due to the rugged environment for MR systems (10) in hospitals supply or signal lines (12) of MR systems (10) are error prone. For serviceability and part replacement it is important to locate the error in the supply or signal line (12) or to identify the subunit (14, 16, 18, 20) of the supply or signal line (12) in which the error occurred. The basic idea of the invention is to use an additional impedance (24), that is coupled to the supply or signal line (12) of the MR system (10) in the region of interconnection (22) for locating the error in the supply or signal line (12). The additional impedance provides a reference impedance value. By measuring the impedance and comparing the measured impedance to the reference impedance value, the error in the supply or signal line (12) can be located. In one embodiment the additional impedance (24) is realized as additional capacitance and provided as a capacitor (28).

公开(公告)号：US20230258749A1

公开(公告)日：2023-08-17

申请号：US18009366

申请日：2021-06-18

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christoph Günther Leussler ,  Oliver Lips ,  Peter Venickel ,  Peter Caesar Mazurkewitz ,  Christian Findeklee ,  Ingo Schmale

IPC: G01R33/36

CPC classification number: G01R33/3685

Abstract: The invention relates to a magnetic resonance coil array (30) of a magnetic resonance system having a distributed cable routing realized by a self-compensated radiofrequency choke (10). The magnetic resonance coil array (30) comprises multiple magnetic resonance receive coils (32), an input-output unit (34), and multiple coaxial cables (14) interconnecting the magnetic resonance receive coils (32) with the input-output unit (34). The coaxial cable (14) comprises the self-compensated radiofrequency choke (10). The self-compensated radiofrequency choke (10) allows to replace conventional bulky resonant radiofrequency traps used in conventional magnetic resonance coil arrays and allows implementing the distributed cable routing. The self-compensated radiofrequency choke (10) comprises a choke housing (12) having a toroidal form and the coaxial cable (14), wherein the coaxial cable (14) is wound around the choke housing (12) in a self-compensated winding pattern. The self-compensated winding pattern provides compensation for a B1-excitation field of a magnetic resonance system and eliminates the need for the self-compensated radiofrequency choke (10) to be resonant to the B1-excitation field.

公开(公告)号：US11163026B2

公开(公告)日：2021-11-02

申请号：US16498454

申请日：2018-03-26

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christoph Leussler ,  Oliver Lips ,  Ingo Schmale

IPC: G01R33/36 ,  G01R33/34

Abstract: A magnetic resonance imaging system (100) comprising a main magnet (104) for generating a main magnetic field within an imaging zone (108); a radio frequency, RF, antenna (114), comprising an RF input terminal (300) and an RF output terminal (302); an RF system for supplying radio-frequency power to the RF input terminal (300) to energize the antenna (114), the antenna (114) being further adapted for picking up magnetic resonance signals (144) from the imaging zone (108); a data acquisition system (126) for receiving the magnetic resonance signals (144) from the RF output terminal (302); wherein the RF input terminal (300) is in galvanic connection to the antenna (114) and the RF output terminal (302) is inductively coupled to the antenna (114).

公开(公告)号：US11137459B2

公开(公告)日：2021-10-05

申请号：US17042403

申请日：2019-03-26

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Oliver Lips ,  Martinus Bernardus Van Der Mark

IPC: G01R33/36

Abstract: An RF antenna element with a detuning system in which the RF antenna element comprises a resonant electrically conductive loop. The (de)tuning system comprising a switching element to (de)tune the resonant electrically conductive loop. The (de)tuning system element includes an electroluminescent element coupled to the resonant electrically conductive loop. The (de)tuning system includes a photo-electrical conversion element to detect an electro-luminescent signal from the electroluminescent element.

公开(公告)号：US10989772B2

公开(公告)日：2021-04-27

申请号：US14761346

申请日：2013-12-30

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Oliver Lips

IPC: G01V3/00 ,  G01R33/345 ,  G01R33/34 ,  G01R33/385

Abstract: A TEM RF antenna device (40) for a magnetic resonance MR imaging system (10), ⋅the RF antenna device (40) comprising a plurality of rungs (44), and each rung (44) having at least one axial member (46) that in an operational state is substantially arranged parallel to the axial direction (38) wherein ⋅the axial members (46) of the plurality of rungs (44) are arranged along an azimuthal direction (34) in a substantially equally spaced relationship about a center axis (42), and wherein ⋅the at least one axial member (46) of each of the rungs (44) has two end regions (48, 50) and wherein ⋅for at least two rungs (44′, 44″) of the plurality of rungs (44) that are adjacently arranged with regard to the azimuthal direction (34), each rung (44′, 44″) comprising at least one transversal member (52, 54) that is galvanically connected to one of the end regions (48, 50) of the axial member (46) of that rung (44′, 44″) only, in the operational state, the at least one transversal members (52, 54) of the adjacent rungs (44′, 44″) are substantially arranged such that there exists at least one location on each of the transversal members (52, 54) of the two rungs (44′, 44″) that at least have substantially identical azimuthal coordinates, thereby reducing the RF field outside of the antenna device.

公开(公告)号：US10578685B2

公开(公告)日：2020-03-03

申请号：US15547103

申请日：2016-01-21

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Falk Uhlemann ,  Oliver Lips

IPC: G01R33/34 ,  G01R33/48

Abstract: A radio frequency coil (34), for use in a medical modality including at least a magnetic resonance examination system (10), comprises: a right hollow cylinder-shaped patient bore lining (36), an inner carrier member (40) that is fixedly attached to an outwardly directed surface of the patient bore lining (36), a radio frequency antenna (42), fixedly attached to an antenna carrier member (44) made from a composite material, which in turn is fixedly attached to an outwardly directed surface of the inner carrier member (40), at least one outer carrier spacer member (48), arranged on at least one out of the at least one radio frequency antenna (42) or an outwardly directed surface of the antenna carrier member (44), and providing a free end-to-end space (50) in a direction parallel to the center axis (38) of the patient bore lining (36), a right hollow cylinder-shaped outer carrier member (52) with a center axis (54), which in an operational state is arranged in parallel to the center axis (38) of the patient bore lining (36), and is in mechanical contact with outwardly directed surfaces of the outer carrier spacer members (48), and a shell member (58) that is in mechanical contact with an outwardly directed surface of the outer carrier member (52); and a medical modality including at least a magnetic resonance examination system (10) with such radio frequency coil (34).

公开(公告)号：US10470662B2

公开(公告)日：2019-11-12

申请号：US15317480

申请日：2015-06-03

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Oliver Lips ,  Johannes Adrianus Overweg ,  Falk Uhlemann

IPC: G01R33/26 ,  A61B5/00 ,  G01T1/16 ,  A61B6/03 ,  A61B6/00 ,  A61B5/055 ,  G01R33/48 ,  G01R33/385

Abstract: A magnetic resonance imaging gradient coil assembly (110) includes a cylindrical coil carrier tube (129). The cylindrical coil carrier tube has an inner surface (125) and an outer surface (129). The cylindrical coil carrier tube has a cylindrical axis of symmetry (200). The cylindrical coil carrier tube has a center (203). The cylindrical coil carrier tube has a photon detector ring receptacle (122) recessed into the inner surface of the cylindrical coil carrier tube. The detector ring receptacle is centered about the center. The photon detector ring receptacle includes side walls (126) formed from the cylindrical carrier tube and a solid back wall (128) formed from the cylindrical carrier tube. The magnetic resonance imaging gradient coil assembly further includes a set of magnetic resonance imaging gradient coils (208, 210) attached to the cylindrical coil carrier tube.