公开(公告)号：US12076111B2

公开(公告)日：2024-09-03

申请号：US17896221

申请日：2022-08-26

申请人： Siemens Healthineers AG ,  Guy's & St. Thomas' NHS Foundation Trust

发明人： Peter Speier ,  Peter Gatehouse

IPC分类号： A61B5/00 ,  G01R33/563 ,  G01R33/567

CPC分类号： A61B5/0044 ,  A61B5/7285 ,  G01R33/56325 ,  G01R33/5673 ,  G01R33/5676

摘要： A method for adapting, per cardiac cycle, the parameters governing interpolation of varying and non-interpolation of fixed fractions of each individual cardiac cycle is provided. A time series of data values associated with a cardiac cycle is received, and the time series is scaled to a reference cardiac cycle, wherein the scaling includes applying a model to the time series to generate a scaled time series of data values associated with the first cardiac cycle. The model is trained using the scaled time series.

公开(公告)号：US11892523B2

公开(公告)日：2024-02-06

申请号：US17848277

申请日：2022-06-23

申请人： ViewRay Technologies, Inc.

发明人： James F. Dempsey

IPC分类号： G01R33/00 ,  A61B5/055 ,  G01R33/48 ,  A61N5/10 ,  G01R33/28 ,  G01R33/3815 ,  G01R33/385 ,  G01R33/381 ,  G01R33/565 ,  G01R33/483 ,  G01R33/38 ,  G01R33/563

CPC分类号： G01R33/0023 ,  A61B5/055 ,  A61N5/1049 ,  G01R33/0017 ,  G01R33/287 ,  G01R33/385 ,  G01R33/3815 ,  G01R33/48 ,  A61N2005/1055 ,  G01R33/381 ,  G01R33/3806 ,  G01R33/4808 ,  G01R33/4835 ,  G01R33/56325 ,  G01R33/56527 ,  G01R33/56536

摘要： Improved magnetic resonance imaging systems, methods and software are described including a low field strength main magnet, a gradient coil assembly, an RF coil system, and a control system configured for the acquisition and processing of magnetic resonance imaging data from a patient while utilizing a sparse sampling imaging technique.

公开(公告)号：US20180031662A1

公开(公告)日：2018-02-01

申请号：US15546770

申请日：2016-01-29

申请人： Northwestern University

发明人： Michael Markl ,  Jeffrey J. Goldberger

IPC分类号： G01R33/563 ,  A61B5/055 ,  A61B5/026 ,  G06T11/00 ,  G06T7/11 ,  G06T7/174 ,  G06T7/20 ,  G06T7/62 ,  G01R33/56 ,  G06T7/00

CPC分类号： G01R33/56325 ,  A61B5/0263 ,  A61B5/055 ,  A61B2576/02 ,  G01R33/5608 ,  G06T7/0016 ,  G06T7/11 ,  G06T7/174 ,  G06T7/20 ,  G06T7/62 ,  G06T11/008 ,  G06T2207/10088 ,  G06T2207/10136 ,  G06T2207/30048 ,  G06T2207/30104

摘要： Described here are systems and methods for producing an image that depicts blood flow stasis using magnetic resonance imaging (MRI), Doppler echocardiography, or other medical instruments for measuring flow velocities in a human body. A time series of three-dimensional (3D) image volumes is provided, where this time series of 3D image volumes contains flow velocity information at voxel locations in a 3D volume in a subject. One or more regions-of-interest are then segmented from the 3D image volumes. For each voxel in the regions-of-interest, velocity magnitudes are calculated. Using the velocity magnitudes, a flow stasis volume is produced by computing a relative stasis value for each voxel location in the corresponding region-of-interest. This flow stasis volume can be provided as a 3D flow stasis image, or a flow stasis map can be produced by projecting the flow stasis volume onto a two-dimensional (2D) plane.

公开(公告)号：US09858687B2

公开(公告)日：2018-01-02

申请号：US13742648

申请日：2013-01-16

申请人： EMORY UNIVERSITY ,  GEORGIA TECH RESEARCH CORPORATION

发明人： John N. Oshinski ,  Jonathan D. Suever ,  Michael S. Lloyd ,  Angel R. Leon

IPC分类号： G06T11/00 ,  G01R33/563 ,  A61B5/04 ,  G06T7/33 ,  A61B90/00 ,  G06T3/00

CPC分类号： G06T11/005 ,  A61B5/04012 ,  A61B2090/374 ,  G01R33/56325 ,  G06T3/0068 ,  G06T7/33 ,  G06T2207/10072 ,  G06T2207/10088 ,  G06T2207/10096 ,  G06T2207/20221 ,  G06T2207/30048

摘要： Systems, methods and computer-readable storage mediums relate to generating an image that includes functional, anatomical, and physiological images. The generated image may be an integrated image based on the functional image on which the anatomical and physiological images are mapped. The generated image may indicate more than one location of optimal lead placement. The generated image may be useful in pre-planning cardiac intervention procedures.

公开(公告)号：US20170307712A1

公开(公告)日：2017-10-26

申请号：US15493825

申请日：2017-04-21

申请人： UNIVERSITY OF VIRGINIA PATENT FOUNDATION

发明人： Xiaoying Cai ,  Frederick H. Epstein ,  Xiaodong Zhong

IPC分类号： G01R33/567 ,  G01R33/561

CPC分类号： G01R33/5676 ,  G01R33/561 ,  G01R33/56316 ,  G01R33/56325

摘要： Some aspects of the present disclosure relate to systems and methods for free-breathing cine DENSE MRI using self-navigation. In one embodiment, a method includes acquiring magnetic resonance data for an area of interest of a subject, wherein the acquiring comprises performing sampling with phase-cycled, cine displacement encoding with stimulated echoes (DENSE) during free-breathing of the subject; identifying, from the acquired magnetic resonance data, a plurality of phase-cycling data pairs corresponding to matched respiratory phases of the free-breathing of the subject; reconstructing, from the plurality of phase-cycling data pairs, a plurality of intermediate self-navigation images; performing motion correction by estimating, from the plurality of intermediate self-navigation images, the respiratory position associated with the plurality of phase-cycling data pairs; and reconstructing a plurality of motion-corrected cine DENSE images of the area of interest of the subject.

公开(公告)号：US20170234952A1

公开(公告)日：2017-08-17

申请号：US15352420

申请日：2016-11-15

申请人： The Board of Trustees of the Leland Stanford Junior University

发明人： Tao ZHANG ,  Yuxin CHEN ,  John M. PAULY ,  Shreyas S. VASANAWALA

IPC分类号： G01R33/48 ,  G01R33/561 ,  G01R33/56

CPC分类号： G01R33/4828 ,  G01R33/5601 ,  G01R33/5611 ,  G01R33/56308 ,  G01R33/56325

摘要： A method for creating a first MRI image and a second MRI image is provided. A first echo is read out. A second echo is read out. The first echo readout is used to generate a first image set, with each image pixel being a first linear combination of the first species and the second species. The second echo readout is used to generate a second image set, with each image pixel being a second linear combination of the first species and the second species. The first image set and second image set are combined to obtain a first combined image containing only the first species and a second combined image containing only the second species, comprising combining the first image set and the second image set to generate two pairs of solutions and using a mathematical optimization to choose a correct pair of solutions.

公开(公告)号：US09724015B2

公开(公告)日：2017-08-08

申请号：US14987356

申请日：2016-01-04

申请人： Duke University

发明人： Hal Cecil Charles ,  Brian J. Soher

IPC分类号： A61B5/055 ,  A61B5/08 ,  A61B5/00 ,  A61M16/00 ,  A61M16/12 ,  G01R33/56 ,  G01R33/563 ,  A61B5/087 ,  G01R33/567 ,  A61M16/10 ,  G01R33/50

CPC分类号： A61B5/0813 ,  A61B5/055 ,  A61B5/08 ,  A61B5/082 ,  A61B5/087 ,  A61B5/7285 ,  A61B2560/0223 ,  A61B2576/02 ,  A61M16/0054 ,  A61M16/085 ,  A61M16/1055 ,  A61M16/107 ,  A61M16/12 ,  A61M2016/1025 ,  A61M2202/0476 ,  A61M2230/432 ,  A61M2230/435 ,  G01R33/50 ,  G01R33/5601 ,  G01R33/56325 ,  G01R33/56366 ,  G01R33/5673

摘要： Systems and methods for generating MRI images of the lungs and/or airways of a subject using a medical grade gas mixture comprises between about 20-79% inert perfluorinated gas and oxygen gas. The images are generated using acquired 19F magnetic resonance image (MRI) signal data associated with the perfluorinated gas and oxygen mixture.

公开(公告)号：US09341693B2

公开(公告)日：2016-05-17

申请号：US13413812

申请日：2012-03-07

申请人： Hui Xue ,  Christoph Guetter ,  Yu Ding ,  Marie-Pierre Jolly ,  Orlando P. Simonetti ,  Jens Guehring ,  Sven Zuehlsdorff ,  Arne Littmann

发明人： Hui Xue ,  Christoph Guetter ,  Yu Ding ,  Marie-Pierre Jolly ,  Orlando P. Simonetti ,  Jens Guehring ,  Sven Zuehlsdorff ,  Arne Littmann

IPC分类号： G01R33/44 ,  G01R33/565 ,  G01R33/561 ,  G01R33/563

CPC分类号： G01R33/56509 ,  G01R33/5611 ,  G01R33/56325

摘要： Magnetic resonance reconstruction includes motion compensation. Inverse-consistent non-rigid registration is used to determine motion between shots. The motion is incorporated into reconstruction. The incorporation compensates for the motion resulting from the period over which the MR data is acquired.

摘要翻译： 磁共振重建包括运动补偿。 反向一致的非刚性配准用于确定镜头之间的运动。 动议被纳入重建。 该并入补偿了获取MR数据的期间产生的运动。

公开(公告)号：US20150346304A1

公开(公告)日：2015-12-03

申请号：US14440346

申请日：2013-11-01

申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

发明人： Peng HU

IPC分类号： G01R33/56 ,  A61K49/10 ,  A61N1/05 ,  A61B5/02 ,  A61B5/044

CPC分类号： G01R33/5602 ,  A61B5/02028 ,  A61B5/044 ,  A61B5/055 ,  A61K49/103 ,  A61K49/105 ,  A61N1/05 ,  G01R33/5601 ,  G01R33/56325 ,  G01R33/5635

摘要： Disclosed herein are methods and systems for clinical practice of medical imaging on patients with metal-containing devices, such as implanted cardiac devices. In particular, Disclosed herein are methods and systems for improved late gadolinium enhancement (LGE) MRI for assessing myocardial viability for patients with implanted cardiac devices, i.e., cardiac pacemakers and implantable cardiac defibrillators.

摘要翻译： 本文公开了用于具有含金属的装置的患者的医学成像的临床实践的方法和系统，例如植入的心脏装置。 特别地，本文公开了用于改善用于植入心脏装置的患者，即心脏起搏器和可植入的心脏除颤器的患者的心肌存活力的改进的晚期钆增强（LGE）MRI的方法和系统。

公开(公告)号：US20150223703A1

公开(公告)日：2015-08-13

申请号：US14423037

申请日：2013-08-21

申请人： The United States of America, as represented by Secretary, Dept. of Health & Human Services

发明人： Khaled Z. Abd-Elmoniem ,  Ahmed M. Gharib ,  Roderic I. Pettigrew

IPC分类号： A61B5/02 ,  A61B5/00 ,  A61B5/0456 ,  A61B5/055

CPC分类号： A61B5/02007 ,  A61B5/004 ,  A61B5/0456 ,  A61B5/055 ,  A61B5/7207 ,  A61B5/7221 ,  A61B5/7278 ,  A61B5/7285 ,  A61B5/7425 ,  A61B2576/02 ,  G01R33/5602 ,  G01R33/56325 ,  G01R33/5635 ,  G01R33/5673 ,  G01R33/5676

摘要： One aspect of the present subject matter provides an imaging method including: receiving a trigger signal; after a period substantially equal to a trigger delay minus an inversion delay, applying a non-selective inversion radiofrequency pulse to a region of interest followed by a slice-selective reinversion radiofrequency pulse to a slice of the region of interest of a subject; and after lapse of the trigger delay commenced at the cardiac cycle signal, acquiring a plurality of time-resolved images of the slice of the region of interest from an imaging device.

摘要翻译： 本发明的一个方面提供了一种成像方法，包括：接收触发信号; 在基本上等于触发延迟减去反相延迟的时间之后，将非选择性反转射频脉冲施加到感兴趣区域，随后是切片选择性再变换射频脉冲到被摄体感兴趣区域的切片; 并且在心跳周期信号开始触发延迟经过之后，从成像装置获取感兴趣区域的切片的多个时间分辨图像。