公开(公告)号：EP3765863B1

公开(公告)日：2024-05-29

申请号：EP19709496.4

申请日：2019-03-11

IPC分类号： G01R33/54 ,  G01R33/56 ,  A61B5/055 ,  G01R33/50 ,  G01R33/24 ,  G01R33/44 ,  G01R33/48 ,  G01R33/483 ,  G01R33/485 ,  A61N5/10

CPC分类号： G01R33/243 ,  G01R33/246 ,  G01R33/443 ,  G01R33/4828 ,  G01R33/4838 ,  G01R33/485 ,  G01R33/50 ,  G01R33/543 ,  G01R33/546 ,  G01R33/5608 ,  A61B5/055 ,  A61N5/1039 ,  A61N2005/100520130101

公开(公告)号：EP3878361B1

公开(公告)日：2024-04-24

申请号：EP20162742.9

申请日：2020-03-12

IPC分类号： A61B5/055 ,  G01R33/563 ,  G01R33/567

CPC分类号： A61B5/055 ,  A61B2576/02320130101 ,  A61B5/0044 ,  A61B5/7267 ,  A61B5/7289 ,  G01R33/56325 ,  G01R33/5676 ,  G01R33/56509 ,  G01R33/5608 ,  G01R33/4824

公开(公告)号：EP3391069A1

公开(公告)日：2018-10-24

申请号：EP16806191.9

申请日：2016-12-12

申请人： Koninklijke Philips N.V.

发明人： MEINEKE, Jan Jakob ,  KATSCHER, Ulrich

IPC分类号： G01R33/48 ,  G01R33/56

CPC分类号： G01R33/56 ,  G01R33/5608

摘要： The invention provides for a medical imaging system (100, 400) comprising: a memory (112) for storing machine executable instructions and a processor (106) for controlling the medical imaging system. Execution of the machine executable instructions cause the processor to: receive (200) a preliminary segmentation (124) from a preliminary magnetic resonance image (122) of a region of interest (409), wherein the preliminary segmentation comprises preliminary segmentation edges; reconstruct (202) a first QSM image (124) for the region of interest from QSM magnetic resonance data (122), wherein the reconstruction of the QSM image is at least partially performed using a regularization function, wherein the regularization function is dependent upon the preliminary segmentation edges during reconstruction of the first QSM image; calculate (204) a first segmentation (126) by segmenting the first QSM image using a QSM image segmentation algorithm (134), wherein the first segmentation comprises first segmentation edges; and reconstruct (206) a second QSM image (128) for the region of interest from the QSM magnetic resonance data, wherein the reconstruction of the second QSM image is at least partially performed using the regularization function, wherein the regularization function is dependent upon the first segmentation edges.

公开(公告)号：EP3380971A1

公开(公告)日：2018-10-03

申请号：EP16869357.0

申请日：2016-11-29

申请人： Arterys Inc.

发明人： DORMER, Kyle ,  PATNI, Hussein ,  BIDULOCK, Darryl ,  AXERIO-CILIES, John ,  TAERUM, Torin, Arni

IPC分类号： G06F19/00 ,  G06F21/62 ,  H04L9/32 ,  H04L29/06

CPC分类号： A61B5/0263 ,  A61B5/0013 ,  A61B5/0022 ,  A61B5/0044 ,  A61B5/02 ,  A61B5/02007 ,  A61B5/02014 ,  A61B5/021 ,  A61B5/026 ,  A61B5/055 ,  A61B5/7203 ,  A61B5/7207 ,  A61B5/725 ,  A61B5/7257 ,  A61B2576/023 ,  G01R33/5608 ,  G01R33/56316 ,  G06T7/0012 ,  G06T7/269 ,  G06T2207/10076 ,  G06T2207/10088 ,  G06T2207/30104 ,  G16H30/20 ,  G16H30/40 ,  H04L9/3213 ,  H04L63/0209

摘要： An MRI image processing and analysis system may identify instances of structure in MRI flow data, e.g., coherency, derive contours and/or clinical markers based on the identified structures. The system may be remotely located from one or more MRI acquisition systems, and perform: perform error detection and/or correction on MRI data sets (e.g., phase error correction, phase aliasing, signal unwrapping, and/or on other artifacts); segmentation; visualization of flow (e.g., velocity, arterial versus venous flow, shunts) superimposed on anatomical structure, quantification; verification; and/or generation of patient specific 4-D flow protocols. An asynchronous command and imaging pipeline allows remote image processing and analysis in a timely and secure manner even with complicated or large medical imaging data sets and metadata.

公开(公告)号：EP3295194B1

公开(公告)日：2018-09-19

申请号：EP16718716.0

申请日：2016-04-28

申请人： Koninklijke Philips N.V.

发明人： NEHRKE, Kay ,  BOERNERT, Peter

IPC分类号： G01R33/24 ,  G01R33/561

CPC分类号： G01R33/5611 ,  G01R33/243 ,  G01R33/246 ,  G01R33/5608 ,  G01R33/5612

摘要： The invention relates to a method of MR imaging of an object (10). The problem of the invention is to provide an improved MR imaging technique that enables fast and robust determination of spatial sensitivity profiles of RF receiving antennas (11, 12, 13) used in parallel imaging as well as B1 and/or B0 mapping. The method of the invention comprises subjecting the object (10) to a stimulated echo sequence. Two or more stimulated echo signals (STE, STE*) are acquired, namely a direct stimulated echo signal (STE) and a conjugated stimulated echo signal (STE*), wherein at least one of the stimulated echo signals (STE, STE*) is received in parallel via an array of two or more RF receiving antennas (11, 12, 13) having different spatial sensitivity profiles, and wherein at least another one of the stimulated echo signals (STE, STE*)is received via a body RF coil (9) having an essentially homogeneous spatial sensitivity profile. Sensitivity maps indicating the spatial sensitivity profiles of the individual RF receiving antennas (11, 12, 13) of the array are derived by comparing the stimulated echo signals (STE, STE*) received via the array of RF receiving antennas (11, 12, 13) with the stimulated echo signals (STE, STE*) received via the body RF coil (9). Moreover, the invention relates to a MR device (1) and to a computer program for a MR device (1).

公开(公告)号：EP3114646B1

公开(公告)日：2018-08-29

申请号：EP15709313.9

申请日：2015-03-04

申请人： St. George's Hospital Medical School

发明人： HE, Taigang ,  FENG, Yanqiu

IPC分类号： G06T7/00 ,  G06T7/11 ,  G06T7/12 ,  G06T7/136 ,  G06T7/149

CPC分类号： G06T7/0012 ,  A61B5/055 ,  A61B5/14546 ,  A61B2576/023 ,  G01R33/5607 ,  G01R33/5608 ,  G01R33/5616 ,  G06T7/11 ,  G06T7/12 ,  G06T7/136 ,  G06T7/149 ,  G06T2207/10088 ,  G06T2207/20116 ,  G06T2207/30048

摘要： Methods and apparatus are described for detecting myocardial iron content using black-blood magnetic resonance imaging data. In one arrangement a method comprises fitting contours to the epicardial and endocardial margins of the left ventricle in the imaging data;creating a binary map by segmenting voxels of the imaging data according to whether the voxel values are above or below a threshold, the threshold being chosen so as to distinguish between blood and ventricular tissue;using the created binary map and the fitted contours to identify the portion of the tissue between the fitted contours corresponding to the interventricular septum; and detecting myocardial iron content by performing T2* measurements on a portion of the imaging data corresponding to the identified interventricular septum.

公开(公告)号：EP3362984A1

公开(公告)日：2018-08-22

申请号：EP16790780.7

申请日：2016-10-12

申请人： Elekta, Inc.

发明人： HAN, Xiao

IPC分类号： G06T3/00 ,  G06T5/00 ,  G06T11/00

CPC分类号： A61B5/7267 ,  A61B5/0035 ,  A61B5/055 ,  A61B5/7278 ,  A61B2090/3762 ,  A61B2576/00 ,  A61N5/1039 ,  G01R33/5608 ,  G06T5/007 ,  G06T11/008 ,  G06T2207/10081 ,  G06T2207/10088 ,  G06T2207/20081 ,  G16H30/20 ,  G16H30/40 ,  G16H50/50

摘要： Systems and methods are provided for generating a pseudo-CT prediction model that can be used to generate pseudo-CT images. An exemplary system may include a processor configured to retrieve training data including at least one MR image and at least one CT image for each of a plurality of training subjects. For each training subject, the processor may extract a plurality of features from each image point of the at least one MR image, create a feature vector for each image point based on the extracted features, and extract a CT value from each image point of the at least one CT image. The processor may also generate the pseudo-CT prediction model based on the feature vectors and the CT values of the plurality of training subjects.

公开(公告)号：EP1876464B1

公开(公告)日：2018-08-22

申请号：EP07013026.5

申请日：2007-07-03

申请人： Toshiba Medical Systems Corporation

发明人： Ichinose, Nobuyasu

IPC分类号： G01R33/563 ,  G01R33/56

CPC分类号： G01R33/56341 ,  G01R33/5608

摘要： A magnetic resonance imaging apparatus (100) includes a unit (17) which generates a diffusion weighted image based on a magnetic resonance signal from a object, a unit (17) which calculates an apparent diffusion coefficient based on the diffusion weighted image, and a processing unit (17) which subjects the diffusion weighted image to a process of indicating a region having the apparent diffusion coefficient of less than a threshold value with a highlight in contrast with other region.

公开(公告)号：EP3351956A1

公开(公告)日：2018-07-25

申请号：EP17152234.5

申请日：2017-01-19

申请人： Siemens Healthcare GmbH

发明人： Feiweier, Thorsten ,  Huwer, Stefan ,  Nittka, Mathias

IPC分类号： G01R33/56 ,  A61B5/055

CPC分类号： G06K9/00114 ,  A61B5/055 ,  G01R33/24 ,  G01R33/4818 ,  G01R33/50 ,  G01R33/5608 ,  G01R33/561 ,  G06K9/00087

摘要： Die Erfindung betrifft ein Verfahren zur Klassifikation von mittels einer Magnetresonanz-Fingerprinting Methode von einem Untersuchungsobjekt erfassten Magnetresonanz-Messdaten, eine Klassifikationseinheit, ein Magnetresonanzgerät und ein Computerprogrammprodukt.
Das Verfahren zur Klassifikation von mittels einer Magnetresonanz-Fingerprinting Methode von einem Untersuchungsobjekt erfassten Magnetresonanz-Messdaten umfasst folgende Verfahrensschritte:
- Erfassen von Magnetresonanz-Messdaten des Untersuchungsobjekts, wobei die Magnetresonanz-Messdaten mehrere mittels einer Magnetresonanz-Fingerprinting Methode erfasste Magnetresonanz-Signalverläufe umfassen,
- Ableiten zumindest eines Texturparameters aus den Magnetresonanz-Messdaten,
- Klassifikation der Magnetresonanz-Messdaten in zumindest eine Gewebeklasse unter Verwendung des zumindest einen Texturparameters und
- Bereitstellen der klassifizierten Magnetresonanz-Messdaten.

公开(公告)号：EP2886052B1

公开(公告)日：2018-07-18

申请号：EP13837210.7

申请日：2013-09-17

申请人： Toshiba Medical Systems Corporation

发明人： ZHOU, Xiangzhi ,  MIYAZAKI, Mitsue ,  HOSHINO, Tsutomu

IPC分类号： A61B5/055

CPC分类号： A61B5/055 ,  A61B5/0044 ,  A61B5/0263 ,  A61B5/742 ,  G01R33/385 ,  G01R33/4833 ,  G01R33/5608 ,  G01R33/56366

摘要： A magnetic resonance imaging apparatus according to an embodiment includes a sequence controller (30) and a display controller (20). The sequence controller (30) performs, for multiple given times of different lengths, data acquisition for acquiring data on slices of a heart after the multiple given times since application of a tag pulse on a tag region. The display controller (20) displays multiple results of analysis of the data acquired for the multiple given times such that a relationship between the multiple given times and the slices can be identified.