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    MAGNETIC RESONANCE COIL DEVICE COMPRISING A FLEXIBLE ARRAY WITH MULTIPLE MAGNETIC RESONANCE RECEIVE COILS
    2.
    发明公开
    MAGNETIC RESONANCE COIL DEVICE COMPRISING A FLEXIBLE ARRAY WITH MULTIPLE MAGNETIC RESONANCE RECEIVE COILS 审中-公开

    公开(公告)号：US20240248158A1

    公开(公告)日：2024-07-25

    申请号：US18290308

    申请日：2022-05-07

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Ingo Schmale ,  Christoph Günther Leussler ,  Oliver Lips ,  Peter Vernickel ,  Peter Caesar Mazurkewitz ,  Christian Findeklee ,  Josef Scholz

    IPC: G01R33/3415 ,  G01R33/34

    CPC classification number: G01R33/3415 ,  G01R33/34084

    Abstract: The invention relates to a magnetic resonance coil device comprising a flexible array (100) with multiple magnetic resonance receive coils (440). According to the invention, a magnetic resonance coil device for a magnetic resonance system is provided, comprising an array (100) with multiple magnetic resonance receive coils (400) which are configured for receiving a magnetic resonance radiofrequency signal, and two outer layers (200, 201), wherein the magnetic resonance receive coils (400) are arranged between the outer layers (200, 201) in such a way that at least some of the magnetic resonance receive coils (400) each partly overlap with at least one other neighboring magnetic resonance receive coil (400) so that respective overlapping regions between two respective neighboring magnetic resonance receive coils (400) are formed, wherein within at least some of these overlapping regions at least one spacer (300) is arranged, respectively, and wherein at least one of the outer layers is flexible. In this way, a versatile magnetic resonance coil device for a magnetic resonance system with an array (100) of multiple magnetic resonance receive coils (400) is provided which can be easily adapted to the shape of different parts of the human body.

    Radio frequency (RF) antenna element with an optical back-end
    3.
    发明授权
    Radio frequency (RF) antenna element with an optical back-end 有权

    公开(公告)号：US11796614B2

    公开(公告)日：2023-10-24

    申请号：US17042368

    申请日：2019-03-25

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Oliver Lips ,  Martinus Bernardus Van Der Mark

    IPC: G01R33/36 ,  H01Q7/00

    CPC classification number: G01R33/3692 ,  G01R33/3621 ,  H01Q7/00

    Abstract: A radio frequency (RF) antenna arrangement comprising an RF antenna element and an optical back-end. The RF antenna element comprises an electrically conductive loop, an electronic pre-amplifier and a photo-electrical conversion element. The optical back-end comprising an optical power source and a photodetector. The RF antenna element and the optical back-end being optically coupled, and wherein the optical power source is optically coupled to the photo-electrical conversion element. The photo-electrical conversion element generates upon incidence of optical power from the optical power source an electrical power signal to the pre-amplifier. The photo-electrical conversion element generates optical data signals from electrical data signals picked-up by the electrically conductive loop. The photo-electrical conversion element applies the optical data signals to the photodetector.

    INDICATION OF A LOADING STATE OF A FLEXIBLE COIL ELEMENT
    5.
    发明申请
    INDICATION OF A LOADING STATE OF A FLEXIBLE COIL ELEMENT 有权

    公开(公告)号：US20230128603A1

    公开(公告)日：2023-04-27

    申请号：US17913455

    申请日：2021-03-24

    Applicant: KONINKLIJKE PHILIPS N.V.

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

    IPC: G01R33/34 ,  G01R33/54

    Abstract: The invention also refers to a flexible coil element for a flexible coil array, for a magnetic resonance imaging apparatus. The invention also refers to a flexible coil array, for a magnetic resonance imaging apparatus, for indicating a loading state of a flexible coil element being positioned on at least one inductive element. The invention also refers to a method for indicating a loading state of a flexible coil element being positioned on at least one inductive element. The flexible coil element is comprised by a flexible coil array, wherein the flexible coil array comprises at least one flexible coil element. Furthermore, the invention refers to a software package comprising instructions for carrying out the method steps.

    RF-SAFE INTERVENTIONAL OR NON-INTERVENTIONAL INSTRUMENT FOR USE IN AN MRI APPARATUS
    6.
    发明申请
    RF-SAFE INTERVENTIONAL OR NON-INTERVENTIONAL INSTRUMENT FOR USE IN AN MRI APPARATUS 有权
    RF安全性传统或非传统仪器用于MRI设备

    公开(公告)号：US20140303485A1

    公开(公告)日：2014-10-09

    申请号：US14359151

    申请日：2012-11-22

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Steffen Weiss ,  Oliver Lips ,  Bernd David

    IPC: G01R33/28

    CPC classification number: G01R33/288

    Abstract: An RF-safe interventional or a non-interventional instrument is disclosed for use during an MR imaging or MR examination of an examination object (A), which instrument is made of or comprises at least one longitudinal or elongated electrically conductive element (1, 3), especially in the form of a conductor or wire or line for feeding electrical signals, or in the form of the instrument itself or a component or a part thereof, which is not provided for feeding electrical signals but nevertheless electrically conductive, wherein all such elements are subject to RF common mode currents which are induced in the element when the instrument or element is exposed to an RF/MR excitation field generated during MR imaging or MR examination by means of an MR imaging apparatus. The instrument is made RF-safe by increasing the energy A loss of an oscillator which is represented by the conductor (1, 3) by means of a damping element (4; 6) in order to prevent or limit RF heating of the examination object (A) at or surrounding the conductor (1, 3).

    Abstract translation: 公开了用于在检查对象（A）的MR成像或MR检查期间使用的RF安全介入或非介入性仪器，该仪器由或包括至少一个纵向或细长的导电元件（1,3） ），特别是用于馈送电信号的导线或线或线的形式，或以仪器本身或其部件或部分的形式，其不被提供用于馈送电信号但仍然导电，其中所有这些 当仪器或元件暴露于通过MR成像设备的MR成像或MR检查期间产生的RF / MR激励场时，元件受到在元件中感应的RF共模电流。 通过增加由导体（1,3）表示的振荡器的能量A的损失，通过阻尼元件（4; 6）来增加仪器的RF安全性，以便防止或限制检查对象的RF加热 （A）在导体（1,3）处或周围。

    Radio frequency receiver with detection of a malfunction of a detune circuit
    7.
    发明授权
    Radio frequency receiver with detection of a malfunction of a detune circuit 有权

    公开(公告)号：US12292490B2

    公开(公告)日：2025-05-06

    申请号：US18035963

    申请日：2021-11-12

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Christian Findeklee ,  Christopher Günther Leussler ,  Peter Caesar Mazurkewitz ,  Peter Vernickel ,  Ingo Schmale ,  Oliver Lips

    IPC: G01R33/36 ,  G01R33/28

    Abstract: For a radio frequency (RF) receiver system a solution for a safe operation of the radio frequency (RF) receiver system in magnetic resonance imaging shall be ensured. This is achieved by a radio frequency (RF) receiver system for use in a magnetic resonance (MR) imaging system the RF receiver system, wherein the RF receiver system comprises at least one RF receive coil with at least one detune circuit (1). The detune circuit (1) comprises at least a pair of crossed diodes (D1, D2) with an interface, wherein the interface is configured to measure an electrical current in the detune circuit (1) to determine the proper function of the PIN diodes (D1, D2) by measuring the detune direct current for a first detune voltage polarity and for a second reversed detune voltage polarity. The present invention also provides a magnetic resonance (MR) imaging system, a method for ensuring a safe radio frequency (RF) receiver system operation in magnetic resonance imaging, a software package for a magnetic resonance (MR) imaging system, a software package for upgrading a magnetic resonance (MR) imaging system and a computer program product.

    RADIO FREQUENCY (RF) RECEIVER SYSTEM WITH ACTIVE DECOUPLING
    8.
    发明公开
    RADIO FREQUENCY (RF) RECEIVER SYSTEM WITH ACTIVE DECOUPLING 审中-公开

    公开(公告)号：US20240063924A1

    公开(公告)日：2024-02-22

    申请号：US18270002

    申请日：2021-12-22

    Applicant: KONINKLIJKE PHILIPS N.V.

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

    IPC: H04B17/21 ,  G01R33/36

    CPC classification number: H04B17/22 ,  G01R33/365

    Abstract: For a radio frequency (RF) receiver system (1) for use in a magnetic resonance (MR) imaging system, a solution for compensating residual coupling of RF receive coil elements (2) in the radio frequency (RF) receiver (1) system shall be created. This is achieved by a radio frequency (RF) receiver system for use in a magnetic resonance (MR) imaging system, the RF receiver system (1) comprising at least two simultaneously used RF receive coil elements (2), wherein the RF receive coil element (2) comprises a signal generator (3) for providing a compensation signal and an excitation path (4), wherein the excitation path (4) is configured to couple the compensation signal into the RF receive coil element (2), for reducing residual coupling in the RF receiver system (1) by means of the compensation signal coupled into the RF receive coil element (2). The present invention also refers to a magnetic resonance (MR) imaging system, a method for active decoupling of a radio frequency (RF) receiver system (1) of a magnetic resonance (MR) imaging system, a software package for a magnetic resonance (MR) imaging system, a software package for upgrading a magnetic resonance (MR) imaging system and a computer program product comprising instructions which, when the program is executed by a computer, cause the computer to carry out the steps of the method as described in the claims.

    Magnetic resonance receive coil with detune circuit and energy harvesting circuit
    10.
    发明授权
    Magnetic resonance receive coil with detune circuit and energy harvesting circuit 有权

    公开(公告)号：US11372064B2

    公开(公告)日：2022-06-28

    申请号：US16564011

    申请日：2019-09-09

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： Christian Findeklee ,  Oliver Lips

    IPC: G01R33/36 ,  H02J50/12 ,  H02J7/02

    Abstract: The invention relates to a magnetic resonance receive coil including a resonator for use in a magnetic resonance imaging system. The radio frequency receive coil according to the invention comprises a first conducting element of the resonator having a conductive loop wherein the received signal is induced in that loop, configured to form a primary resonant circuit tunable to at least one first resonance frequency and a second conducting element of the resonator configured to form an electric circuit electrically insulated from and reactively coupled to the primary resonant circuit, the electric circuit being adapted to detune the primary resonant circuit to at least one second resonance frequency. The second conducting element of the resonator has a conductive loop with a pair of ends connected to a preamplifier. The radio frequency receive coil further comprises an energy harvesting circuit electrically coupled in parallel over the pair of ends of the second conducting element, wherein the energy harvesting circuit is adapted for being connected to the second conducting element during transmission by a switch. A rechargeable power source is coupled to the energy harvesting circuit, wherein the rechargeable power source is adapted for being charged by the energy harvesting circuit. A switching component is circuited in parallel to the energy harvesting circuit, wherein is adapted to redirect a current as soon as the rechargeable power source is charged to a sufficient voltage. In this way, a magnetic resonance receive coil with a detune circuit and an energy harvesting circuit for energy harvesting is provided without a significant loss of detuning performance.

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