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.

公开(公告)号：US20240154287A1

公开(公告)日：2024-05-09

申请号：US18279894

申请日：2022-03-01

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christian Findeklee ,  Christoph Günther Leussler

IPC: H01P3/06 ,  G01R33/36

CPC classification number: H01P3/06 ,  G01R33/36

Abstract: According to the invention, a transmission line (10) for transmitting data and electrical power, comprising a first coaxial cable (20) with a first inner conductor (21) and a first outer conductor (22), and a second coaxial (30) cable with a second inner conductor (31) and a second outer conductor (32), wherein the first coaxial cable (20) and the second coaxial cable (30) are provided with an additional shield which is surrounding the first coaxial cable (20) and the second coaxial cable (30) and/or the first coaxial cable (20) and the second coaxial cable (30) are twisted around each other to form a twisted transmission line (10), and the first outer conductor (22) and the second outer conductor (32) are galvanically insulated from each other. In this way, a transmission line (10) for transmitting data and electrical power is provided which is compatible with use within an MRI apparatus and can be manufactured at low costs.

公开(公告)号：US11940521B2

公开(公告)日：2024-03-26

申请号：US17612066

申请日：2020-05-18

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christoph Gunther Leussler ,  Christian Findeklee ,  Jan Jakob Meineke ,  Peter Vernickel ,  Peter Koken

IPC: G01R33/56 ,  A61B6/00 ,  A61B6/03 ,  G01R33/565 ,  G01R33/567

CPC classification number: G01R33/56509 ,  A61B6/037 ,  A61B6/4417 ,  A61B6/5264 ,  G01R33/5673

Abstract: Disclosed is a medical system (100, 300, 500, 700) comprising: a memory (128) storing machine executable instructions (130); a processor (122) configured for controlling the medical system; and a pilot tone system (106). The pilot tone system comprises a radio frequency system (108) comprising multiple transmit channels (110) and multiple receive channels (112). The multiple transmit channels are configured for each transmitting unique pilot tone (132) signals via multiple transmit coils. The multiple receive channels are configured for receiving multi-channel pilot tone data (134) via multiple receive coils. Execution of the machine executable instructions causes the processor to: transmit (200) multi-channel pilot tone signals by controlling at least a portion of the multiple transmit channels to transmit the unique pilot tone signals; acquire (202) multi-channel pilot tone data (134) by controlling at least a portion of the multiple receive channels to receive the multi-channel pilot tone data; and determine (204) a motion state (136) of the subject using the multi-channel pilot tone data.

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.

公开(公告)号：US20250102602A1

公开(公告)日：2025-03-27

申请号：US18850616

申请日：2023-03-22

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christian Findeklee ,  Christopher Günther Leussler ,  Peter Vernickel

IPC: G01R33/36

Abstract: In the case of a radio frequency (RF) coil assembly for a magnetic resonance (MR) imaging system, interference in a galvanic transmission line (1) configured to transmit a digital signal should be avoided. This is achieved in that a signal circuit (Pr2) is provided, configured to monitor non-differential asymmetries around the Larmor frequency in a signal through the galvanic transmission line (1), wherein the signal circuit (Pr2) is configured to provide feedback to a digital adjustment circuit (4), wherein the digital adjustment circuit (4) is configured to compensate for non-differential asymmetries around the Larmor frequency in the digital signal by adjusting phase and/or amplitude of the digital signal based on monitored measured values of the signal circuit (Pr2). Furthermore, the invention relates to a method for compensating for non-differential asymmetries around the Larmor frequency in a digital signal in a galvanic transmission line (1) of a radio frequency (RF) coil assembly.

公开(公告)号：US12092712B2

公开(公告)日：2024-09-17

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：US11982722B2

公开(公告)日：2024-05-14

申请号：US17421759

申请日：2020-01-10

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Peter Vernickel ,  Christoph Gunther Leussler ,  Oliver Lips ,  Ingo Schmale ,  Christian Findeklee

IPC: A61B5/05 ,  A61B5/055 ,  G01R33/28 ,  G01R33/341 ,  G01R33/54 ,  G06T7/70 ,  G06T7/80

CPC classification number: G01R33/283 ,  A61B5/055 ,  G01R33/341 ,  G01R33/543 ,  G06T7/70 ,  G06T7/80

Abstract: The invention provides for a magnetic resonance imaging system (100, 300). The magnetic resonance imaging system comprises: a subject support (120) configured for moving a subject between a loading position (121) and an imaging position (200); a receive magnetic resonance imaging coil (114) configured for being placed on the subject; and a light detection system (115) comprising at least one ambient light sensor for measuring light data (144). The light detection system is any one of the following: mounted to the main magnet such that the light data is measured from the imaging zone and mounted to the receive magnetic resonance imaging coil. The execution of the machine executable (140) instructions by a processor (130) cause the processor to: move (500) the subject support from the loading position to the imaging position; acquire (502) the light data using the at least one ambient light sensor when the subject support is in the imaging position; determine (504) if the receive magnetic resonance imaging coil is positioned for acquiring magnetic resonance imaging data using the light data; and provide (506) a signal (146) if the receive magnetic resonance imaging coil is positioned for acquiring the magnetic resonance imaging data.

公开(公告)号：US11519982B2

公开(公告)日：2022-12-06

申请号：US17312967

申请日：2019-12-09

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： George Randall Duensing ,  Sascha Krueger ,  Christian Findeklee ,  Oliver Lips

IPC: G01R33/3415 ,  G01R33/28 ,  G01R33/36

Abstract: A radio frequency (RF) system comprises an RF-array of antenna elements, a regulating arrangement to tune the antenna elements' impedances and a camera system to acquire image information of the RF-array. An analysis module is provided to derive operational settings such as resonant tuning settings, decoupling and impedance matchings of the antenna elements' impedances from the image information. The image information also represents the actual impedances and resonant properties of the RF-array. From the image information appropriate impedance settings can be derived that are the tuning parameters to render the RF-array resonant.

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.

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.