-
公开(公告)号：US20190213761A1
公开(公告)日：2019-07-11
申请号：US16326910
申请日：2017-09-01
发明人： Matthew S. Rosen , Bo Zhu , Bruce R. Rosen
IPC分类号： G06T11/00 , G01R33/56 , G01R33/48 , G06K9/62 , A61B5/00 , A61B5/055 , A61B6/03 , A61B6/00 , A61B8/08 , A61B8/00 , G16H30/40 , G06N3/08
CPC分类号： G06T11/006 , A61B5/0035 , A61B5/0059 , A61B5/055 , A61B5/7267 , A61B5/7425 , A61B6/032 , A61B6/037 , A61B6/463 , A61B6/5247 , A61B8/463 , A61B8/5261 , G01R33/12 , G01R33/4818 , G01R33/4824 , G01R33/5608 , G06K9/623 , G06K9/6274 , G06K2209/05 , G06N3/0454 , G06N3/08 , G06T2210/41 , G16H30/40
摘要： A system may transform sensor data from a sensor domain to an image domain using data-driven manifold learning techniques which may, for example, be implemented using neural networks. The sensor data may be generated by an image sensor, which may be part of an imaging system. Fully connected layers of a neural network in the system may be applied to the sensor data to apply an activation function to the sensor data. The activation function may be a hyperbolic tangent activation function. Convolutional layers may then be applied that convolve the output of the fully connected layers for high level feature extraction. An output layer may be applied to the output of the convolutional layers to deconvolve the output and produce image data in the image domain.
-
公开(公告)号：US11620772B2
公开(公告)日：2023-04-04
申请号：US16326910
申请日：2017-09-01
发明人： Matthew S. Rosen , Bo Zhu , Bruce R. Rosen
IPC分类号： G06T11/00 , G01R33/56 , G06N3/08 , G01R33/12 , G06K9/62 , G06N3/04 , G16H30/40 , A61B5/00 , A61B5/055 , A61B6/03 , A61B6/00 , A61B8/00 , A61B8/08 , G01R33/48
摘要： A system may transform sensor data from a sensor domain to an image domain using data-driven manifold learning techniques which may, for example, be implemented using neural networks. The sensor data may be generated by an image sensor, which may be part of an imaging system. Fully connected layers of a neural network in the system may be applied to the sensor data to apply an activation function to the sensor data. The activation function may be a hyperbolic tangent activation function. Convolutional layers may then be applied that convolve the output of the fully connected layers for high level feature extraction. An output layer may be applied to the output of the convolutional layers to deconvolve the output and produce image data in the image domain.
-
3.发明申请公开(公告)号：US20230029685A1
公开(公告)日：2023-02-02
申请号：US17866069
申请日：2022-07-15
IPC分类号： G01R33/561 , G01R33/56 , A61B5/055 , G01R33/44
摘要： Systems and methods are provided for susceptibility contrast imaging of nanoparticles at low magnetic fields. A susceptibility-based MRI technique, such as imaging with a balanced steady-state free precession (bSSFP) pulse sequence, may be used for imaging a contrast agent such as biocompatible superparamagnetic nanoparticles at ultra-low fields. The contrast agent and imaging technique may be used to improving the visibility of anatomical structures and detecting diseases, such as cancer, with low-field MRI.
-
4.发明申请公开(公告)号：US20180203081A1
公开(公告)日：2018-07-19
申请号：US15872449
申请日：2018-01-16
发明人： Ouri Cohen , Bo Zhu , Matthew S. Rosen
CPC分类号： G01R33/4828 , G01R33/50 , G01R33/5608 , G06N3/04 , G06N3/08 , G06N3/084
摘要： Disclosed is a system and method for estimating quantitative parameters of a subject using a magnetic resonance (“MR”) system using a dictionary. The dictionary may include a plurality of signal templates that sparsely sample acquisition parameters used when acquiring data. The acquired data is compared with the dictionary using a neural network. Thus, systems and methods are provided that are more computationally efficient, and have reduced data storage requirements than traditional MRF reconstruction systems and methods.
-
公开(公告)号：US20180085024A1
公开(公告)日：2018-03-29
申请号：US15562547
申请日：2016-04-01
CPC分类号： A61B5/055 , G01R33/3806 , G01R33/381 , G01R33/445 , G01R33/5601 , G01R33/5614 , G01R33/5635 , G01V3/14
摘要： Systems and methods are provided for performing a medical imaging. The system includes a main magnet system configured to generate a main static magnetic field about at least a region of interest (ROD of a subject arranged in the main magnet system. The system also includes at least one gradient coil configured to establish at least one magnetic gradient field with respect to the main static magnetic field, The system also includes a radio frequency (RF) system configured to deliver excitation pulses to the subject. The system also includes a polarization magnet system configured to generate a polarization static magnetic field in an at least partially shielded region away from the main magnet system, the polarization magnet system configured to at least partially pre-polarize a blood substitute to be injected to the subject.
-
公开(公告)号：US20170010339A1
公开(公告)日：2017-01-12
申请号：US15125860
申请日：2015-03-13
IPC分类号： G01R33/34 , G01R33/561 , A61B5/08 , G01R33/56 , A61B5/055 , A61B5/0402 , G01R33/44 , G01R33/563
摘要： A system and method for system for performing a magnetic resonance imaging (MRI) process using an MRI system is provided. A coil system includes a substrate configured to follow a contour of a portion of a subject to be imaged by the MRI system and at least one coil coupled to the substrate and forming a spiral pattern.
摘要翻译： 提供了一种使用MRI系统进行磁共振成像（MRI）处理的系统和方法。 线圈系统包括被配置为跟随由MRI系统成像的对象的一部分的轮廓的衬底和耦合到衬底并形成螺旋图案的至少一个线圈。
-
公开(公告)号：US20170003365A1
公开(公告)日：2017-01-05
申请号：US15125670
申请日：2015-03-13
CPC分类号： G01R33/50 , G01R33/243 , G01R33/445 , G01R33/4804 , G01R33/4822 , G01R33/4824 , G01R33/4826
摘要： A system and method for generating a report about a subject positioned within a bore of a magnetic resonance imaging (MRI) system includes controlling the MRI system to perform a magnetic resonance fingerprinting (MRF) pulse sequence that at least partially samples k-space using either fractional Cartesian or non-Cartesian sequential sampling pattern to acquire imaging data from the subject. The process also includes estimating quantitative parameters by comparing the acquired imaging data with at least one database comprising a plurality signal templates.
摘要翻译： 用于产生关于位于磁共振成像（MRI）系统的孔内的对象的报告的系统和方法包括控制MRI系统以执行磁共振指纹（MRF）脉冲序列，其使用以下任一方法至少部分地采样k空间 分数笛卡尔或非笛卡尔顺序采样模式，以从主体获取成像数据。 该过程还包括通过将所获取的成像数据与包括多个信号模板的至少一个数据库进行比较来估计定量参数。
-
公开(公告)号：US20170000377A1
公开(公告)日：2017-01-05
申请号：US15125676
申请日：2015-03-16
发明人： Matthew S. Rosen , Mathieu Sarracanie , Brandon Armstrong , Cenk Ayata , Fanny Herisson , Peter Caravan , Eric Gale
IPC分类号： A61B5/055 , G01R33/60 , G01R33/28 , A61B5/00 , G01R33/385
CPC分类号： A61B5/055 , A61B5/0022 , A61B5/0263 , A61B5/4064 , A61B5/4848 , A61B5/7275 , A61B5/742 , A61B5/7475 , G01R33/281 , G01R33/381 , G01R33/385 , G01R33/445 , G01R33/5608 , G01R33/5614 , G01R33/60 , G01R33/62
摘要： A system and method performing a medical imaging process includes arranging a subject to receive an exogenously administered free radical probe, performing an Overhauser-enhanced MRI (OMRI) imaging process to acquire data from the subject, and reconstructing the data to generate a report indicating a spatial distribution of free radicals in the subject.
摘要翻译： 执行医学成像过程的系统和方法包括安排受试者接受外源给予的自由基探针，执行Overhauser增强MRI（OMRI）成像过程以从受试者获取数据，以及重建数据以产生指示 受试者自由基的空间分布。
-
公开(公告)号：US20160291107A1
公开(公告)日：2016-10-06
申请号：US15088353
申请日：2016-04-01
发明人： Matthew S. Rosen , Mathieu Sarracanie , Ouri Cohen
IPC分类号： G01R33/48 , G01R33/561 , G01R33/54
摘要： Provided is a system and method for performing a magnetic resonance fingerprinting imaging process. The process includes determining acquisition parameters including at least one of repetition time (TR) or flip angle (FA), selected to control one of a duration and a number of repetitions of for a pulse sequence that samples k-space in a Cartesian acquisition pattern by acquiring an echo train. The process also includes controlling a magnetic resonance imaging (MRI) system to perform the pulse sequence a plurality of times to acquire magnetic resonance fingerprinting (MRF) data corresponding to signals from the subject excited by the pulse sequence. The process also includes estimating quantitative tissue properties of the subject by comparing the MRF data to a database and reconstructing, from the MRF data, at least one image of the subject indicating the estimated quantitative tissue properties.
摘要翻译： 提供了一种用于执行磁共振指纹图像处理的系统和方法。 该过程包括确定包括重复时间（TR）或翻转角（FA）中的至少一个的采集参数，被选择用于控制在笛卡尔采集模式中采样k空间的脉冲序列的持续时间和重复次数之一 通过获取回波列车。 该过程还包括控制磁共振成像（MRI）系统以多次执行脉冲序列以获取对应于由脉冲序列激发的对象的信号的磁共振指纹（MRF）数据。 该过程还包括通过将MRF数据与数据库进行比较来估计受试者的定量组织性质，并从MRF数据重建指示所估计的定量组织性质的受试者的至少一个图像。
-
公开(公告)号：US10830848B2
公开(公告)日：2020-11-10
申请号：US15125514
申请日：2015-03-13
IPC分类号： G01R33/00 , G01R33/10 , G01R33/20 , G01V3/00 , A61B5/05 , G01R33/36 , G01R33/44 , G01R33/561 , G01R33/3415 , G01R33/34 , G01R33/563 , G01R33/567
摘要： A system and method for performing parallel magnetic resonance imaging (pMRI) process using a low-field magnetic resonance imaging (IfMRI) system includes a substrate configured to follow a contour of a portion of a subject to be imaged by the IfMRI system using a pMRI process. A plurality of coils are coupled to the substrate. Each coil in the plurality of coils has a number of turns and an associated decoupling mechanism selected to operate the plurality of coils to effectuate the pMRI process using the IfMRI system.
-
-
-
-
-
-
-
-
-
搜索结果
15 条记录 (耗时 0.019 秒)