公开(公告)号：US12099103B2

公开(公告)日：2024-09-24

申请号：US17632244

申请日：2020-08-07

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christoph Gunther Leussler ,  Michael Gunter Helle ,  Daniel Wirtz ,  Gereon Vogtmeier ,  Steffen Weiss ,  Sunil Kumar Vuppala ,  Rajendra Singh Sisodia

IPC: G01R33/34 ,  A61B5/00 ,  A61B5/055 ,  A61M16/06 ,  G01R33/28

CPC classification number: G01R33/34084 ,  A61B5/0036 ,  A61B5/055 ,  A61M16/06 ,  G01R33/283

Abstract: Embodiments of the present application provide a radio frequency head coil (300), RE head coil. The RE head coil (300) comprises a coil former (310) comprising at least a first leg and a second leg arranged at a distance from each other to define a space there between, the coil former (310) being at least sectionally flexible and having at least one first fastening portion (315, 316) arranged adjacent to the space (314), and a respiratory mask (320) comprising a gas outlet (324) and at least one second fastening portion (322, 323), wherein in an operable condition in which the RE head coil (300) is adapted to be arranged at least in sections around a head of a patient (S) and in which the second fastening portion (322, 323) is adapted to be fastened to the first fastening portion (315, 316), the gas outlet (324) is disposed within the space (314).

公开(公告)号：US11226389B2

公开(公告)日：2022-01-18

申请号：US16339858

申请日：2017-10-09

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Karsten Sommer ,  Michael Gunter Helle ,  Thomas Erik Amthor ,  Peter Boernert

IPC: G01R33/563 ,  A61B5/00 ,  A61B5/055 ,  A61B5/026 ,  G01R33/56 ,  G06T7/00 ,  G01R33/561

Abstract: The invention provides for a method of operating a magnetic resonance imaging system for imaging a subject. The method comprises acquiring (700) tagged magnetic resonance data (642) and a first portion (644) of fingerprinting magnetic resonance data by controlling the magnetic resonance imaging system with tagging pulse sequence commands (100). The tagging pulse sequence commands comprise a tagging inversion pulse portion (102) for spin labeling a tagging location within the subject. The tagging pulse sequence commands comprise a background suppression portion (104). The background suppression portion comprises MRF pulse sequence commands for acquiring fingerprinting magnetic resonance data according to a magnetic resonance fingerprinting protocol. The tagging pulse sequence commands comprise an image acquisition portion (106). The method comprises acquiring (702) control magnetic resonance data (646) and a second portion (648) of the fingerprinting magnetic resonance data by controlling the magnetic resonance imaging system with control pulse sequence commands. The control pulse sequence commands comprise a control inversion pulse portion (202). The control pulse sequence commands comprise the background suppression portion (104′). The control pulse sequence commands comprise the image acquisition portion (106). The method comprises reconstructing (704) tagged magnitude images (650) using the tagged magnetic resonance data. The method comprises reconstructing (706) a control magnitude images (652) using the control magnetic resonance data. The method comprises constructing (708) an ASL image by subtracting the control magnitude images and the tagged magnitude images from each other. The method comprises reconstructing (710) a series of magnetic resonance fingerprinting images (656) using the first portion of the fingerprinting magnetic resonance data and/or the second portion of the fingerprinting magnetic resonance data. The method comprises generating (712) at least one magnetic resonance parametric map (658) by comparing the series of magnetic resonance fingerprinting images with a magnetic resonance fingerprinting dictionary.

公开(公告)号：US12241952B2

公开(公告)日：2025-03-04

申请号：US17273741

申请日：2019-09-03

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christoph Leussler ,  Michael Gunter Helle ,  Daniel Wirtz ,  Gereon Vogtmeier ,  Steffen Weiss

IPC: G01R33/34 ,  G01R33/3415 ,  G01R33/565

Abstract: The invention may improve image quality of magnetic resonance imaging (MRI). The invention is directed to a coil arrangement (200) for magnetic resonance imaging. It comprises a base structure having a variable shape, an RF coil arranged on or in the base structure, an actuator means at least partially extending along the base structure such that the base structure is deformable along and/or about at least one axis, a position detecting means adapted to detect a current position of at least a portion of the subject to be examined relative to the RF coil, and control means coupled to the position detecting means and the actuator means, wherein the control means is adapted to adjust the shape of the base structure to maintain a contact of an outer surface of the base structure (210) and/or the RF coil (220) with the at least portion of the subject by driving the actuator means in response to a detected change of the current position relative to a previous position. The invention is further directed to a (MRI) system, a method for positioning an RF coil for a magnetic resonance imaging system relative to a subject to be examined, and a non-transitory computer-readable medium.

公开(公告)号：US11754649B2

公开(公告)日：2023-09-12

申请号：US17615846

申请日：2020-06-02

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Johan Partomo Djajadiningrat ,  Michael Gunter Helle ,  Gereon Vogtmeier ,  Steffen Weiss ,  Jaap Knoester

IPC: G01R33/28 ,  G01R33/038

CPC classification number: G01R33/288 ,  G01R33/038

Abstract: The invention is directed to a sensor system (100) for increasing security of a use of at least one magnetic object (102) in vicinity of an MR imaging device (200), wherein at least one magnetic property of the magnetic object (102) can be measure and evaluated in order to increase the safe use of the magnetic object (102) within MR environments.

公开(公告)号：US20210156940A1

公开(公告)日：2021-05-27

申请号：US17047749

申请日：2019-04-17

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Karsten Sommer ,  Axel Saalbach ,  Michael Gunter Helle ,  Steffen Weiss ,  Christophe Michael Jean Schulke

IPC: G01R33/54 ,  G01R33/56 ,  G01R33/565 ,  A61B5/055

Abstract: The invention provides for a magnetic resonance imaging system (100, 300). The execution of machine executable instructions causes a processor (130) controlling the magnetic resonance imaging system to control (200) the magnetic resonance imaging system to acquire the magnetic resonance imaging data (144) using pulse sequence commands (142) and reconstruct (202) a magnetic resonance image (148). Execution of the machine executable instructions causes the processor to receive (204) a list of suggested pulse sequence command changes (152) by inputting the magnetic resonance image and image metadata (150) into an MRI artifact detection module (146, 146′, 146″). The MRI artifact detection module comprises at least one neural network, which has been trained using images from failed magnetic resonance imaging protocols and/or magnetic resonance data extracted from the magnetic resonance imaging protocols labeled as failed accessed from a log file (312) which logs the execution of previous magnetic resonance imaging protocols. Execution of the machine executable instructions further causes the processor to receive (206) a selection of a chosen pulse sequence command change (158) from the list of suggested pulse sequence command changes. Execution of the machine executable instructions further causes the processor to modify (208) the pulse sequence commands using the chosen pulse sequence command change.

公开(公告)号：US20200294286A1

公开(公告)日：2020-09-17

申请号：US16767613

申请日：2017-11-29

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Michael Gunter Helle ,  Thomas Lindner

IPC: G06T11/00 ,  G01R33/563 ,  G01R33/56 ,  G01R33/48 ,  G06T15/08 ,  G06T7/00

Abstract: The invention provides for a medical imaging system (100, 300) comprising a processor (106) for controlling the medical imaging system. Execution of machine executable instructions (112) causes the processor to receive (200) a static angiographic image (114) of a region of interest (322), receive (202) a time series of angiographic images (116, 116′) of the region of interest, construct (204) an image mask (118) using the static angiographic image, determine (206) a time dependent signal (120) for each voxel within the image mask using the time series of angiographic images, construct (208) a composite angiographic image by: assigning (210) a fill time (126) to each voxel within the image mask using an extremum (124) of the time dependent signal if the extremum deviates from an average of the time dependent signal more than a predetermined threshold, and identifying (212) voxels within the image mask as being unfilled voxels.

公开(公告)号：US10114098B2

公开(公告)日：2018-10-30

申请号：US15300052

申请日：2015-03-17

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Nicole Schadewaldt ,  Michael Gunter Helle ,  Heinrich Schulz ,  Steffen Renisch

IPC: G01R33/56 ,  G06T7/00 ,  G06T7/11 ,  G01R33/48 ,  A61B5/055 ,  A61B5/00

Abstract: A pseudo CT Hounsfield Unit value for a volume element within a subject is estimated from a plurality of magnetic resonance images having different contrasts. The method includes determining a relative prevalence of a first tissue class and second tissue class within the volume element from a first magnetic resonance image and a second magnetic resonance image, respectively. Then a relative prevalence of a third tissue class is determined within the volume element based on substraction of a relative prevalence of the first and/or second tissue class from a total tissue prevalence. A reference Hounsfield Unit value is provided for the first, second and third tissue class. Finally, a pseudo Housfield value is estimated for the volume element by determining a weighted sum of the first, second and third reference Hounsfield unit value, with weight factors which are based on the determined relative prevalences of the first, second and third tissue class.

公开(公告)号：US12111373B2

公开(公告)日：2024-10-08

申请号：US17294698

申请日：2019-11-19

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Karsten Sommer ,  Michael Gunter Helle

IPC: G01R33/54 ,  G01R33/56 ,  G01R33/563 ,  G06N3/045 ,  G06N3/084 ,  G06T7/00 ,  G06V10/764 ,  G06V10/82

CPC classification number: G01R33/543 ,  G01R33/546 ,  G01R33/5608 ,  G01R33/56308 ,  G01R33/56366 ,  G06T7/0012 ,  G06V10/764 ,  G06V10/82 ,  G06T2207/10096 ,  G06T2207/20081 ,  G06T2207/20084 ,  G06T2207/20101 ,  G06T2207/30016

Abstract: The invention provides for a method of training a neural network (322) configured for providing a further processing location (326). The method comprises providing (200) a labeled medical image (100), wherein the labeled medical image comprises multiple labels each indicating a truth processing location (102, 104, 106). The method further comprises inputting (202) the labeled medical image into the neural network to obtain one trial processing location. The one trial processing location comprises a most likely trial processing location (108). The method further comprises determine (204) the closest truth processing location (106) for the most likely trial processing location. The method further comprises calculating (206) an error vector (110) using the closest truth processing location and the most likely trial processing location. The method further comprises training (208) the neural network using the error vector.

公开(公告)号：US11571138B2

公开(公告)日：2023-02-07

申请号：US16470274

申请日：2017-12-18

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Eberhard Sebastian Hansis ,  Michael Gunter Helle ,  Tim Philipp Harder ,  Thomas Netsch

IPC: G16H40/63 ,  A61B5/055 ,  A61B6/00 ,  G16H30/40 ,  A61B5/00 ,  G01R33/54 ,  G16H40/67

Abstract: The present disclosure relates to a method for configuring a medical device. The method comprises: providing a set of one or more parameters for configuring the medical device. Each parameter of the set has predefined values. A set of values of the set of parameters may be selected from the predefined values. Using the selected values the set of parameters may be set, which results in an operational configuration of the medical device. The medical device may be controlled to operate in accordance with the operational configuration, thereby an operating status of the medical device may be determined. Based on at least the operating status the operational configuration may be maintained or the selecting, setting and controlling may be repeatedly performed until a desired operating status of the medical device can be determined based on the operating statuses resulting from the controlling.

公开(公告)号：US10987020B2

公开(公告)日：2021-04-27

申请号：US15772149

申请日：2016-10-17

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Steffen Weiss ,  Ulrich Katscher ,  Christian Stehning ,  Michael Gunter Helle

IPC: A61B5/055 ,  A61B5/107 ,  G01R33/56 ,  G06T7/00 ,  G01R33/48

Abstract: It is an object of the invention to improve tissue classification in MRI images. In particular it is an object of the invention to improve the classification of bone and air in MRI images. This object is achieved by a method for tissue classification in a region of interest in a magnetic resonance (MR) image comprising a first region and a second region, wherein the first region represents air and the second region represents bone. The method comprises the steps of: —acquiring a first magnetic resonance image comprising the first and the second region and; —acquiring a second magnetic resonance image comprising the first and the second region, wherein the first region has a different shape in the second magnetic resonance image compared to the first magnetic resonance image and; —identifying the first region and second region in the first and second image and; —comparing the first image and the second image with respect to the first region and the second region and; —classifying the first region as region representing air based on a presence of a shape difference between the first and the second image and classifying the second region as bone based on an absence of the shape difference between the first and second image.