公开(公告)号：US10197646B2

公开(公告)日：2019-02-05

申请号：US14705576

申请日：2015-05-06

Applicant: Elfar Adalsteinsson ,  Luca Daniel ,  Bastien Guerin ,  Boris Keil ,  Zohaib Mahmood ,  Markus Vester ,  Lawrence Wald

Inventor： Elfar Adalsteinsson ,  Luca Daniel ,  Bastien Guerin ,  Boris Keil ,  Zohaib Mahmood ,  Markus Vester ,  Lawrence Wald

IPC: G01R33/36 ,  G01R33/34 ,  G01R33/385 ,  G01R33/561 ,  G01R33/3415

Abstract: A magnetic resonance imaging (MRI) system includes a plurality of transmitters to generate a parallel transmission radio frequency (RF) pulse, an array of coils coupled to the plurality of transmitters to apply the parallel transmission RF pulse to a subject, and a decoupling system connected to the plurality of transmitters and the array of coils. The decoupling system includes a plurality of hybrid couplers, each hybrid coupler of the plurality of hybrid couplers being coupled to a respective pair of the plurality of transmitters and to a respective pair of the array of coils. The plurality of hybrid couplers are configured to diagonalize an impedance matrix of the plurality of coils.

公开(公告)号：US20150359301A1

公开(公告)日：2015-12-17

申请号：US14301645

申请日：2014-06-11

Applicant: Mario Christian LAVORATO ,  Tang Heng QUANH ,  Luca Daniel LAVORATO

Inventor： Mario Christian LAVORATO ,  Tang Heng QUANH ,  Luca Daniel LAVORATO

IPC: A44C5/20

CPC classification number: A44C5/20 ,  A44C11/002 ,  A44C15/005 ,  A44C25/001 ,  A44D2203/00

Abstract: An article of jewelry, e.g. necklace, bracelet or the like, comprising a flexible strand and one or more ornaments shaped, configured and dimensioned to be slidably retainable on the strand; one or more spaced apart magnetic components associated with (e.g. embedded) inside the strand; and a magnetic insert embedded in at least one of the ornament or ornaments which magnetic insert is attractable to the magnet components, whereby the one or more ornaments can be releasably retained on the strand by the force of magnetic attraction. Some examples of the strand can also have no ornaments and be stackable together using the force of magnetic attraction, and also a magnetic connector assembly comprising a first part coupled to a first end of the strand, and a second part coupled to a second end of the strand, each part having a magnetic component attractive to each other, the first and second parts being adapted to releasably connect together to form the strand into an endless loop.

Abstract translation: 一件首饰，例如 项链，手镯等，其包括柔性绳和一个或多个成形，构造和尺寸设计成可滑动地保持在绳上的饰物; 与股线内（例如嵌入）相关联的一个或多个间隔开的磁性部件; 以及磁性插入件，其嵌入至所述装饰物或装饰品中的至少一个中，所述磁性插入物可吸引到所述磁性部件，由此所述一个或多个饰物可以通过磁吸引力被可释放地保持在所述绞合线上。 股线的一些示例也可以没有装饰物并且可以使用磁吸引力堆叠在一起，并且还包括磁性连接器组件，其包括耦合到股线的第一端的第一部分和耦合到股线的第二端的第二部分 股线，每个部分具有彼此吸引的磁性部件，第一和第二部分适于可释放地连接在一起，以将股线形成无限循环。

公开(公告)号：US10295624B2

公开(公告)日：2019-05-21

申请号：US13918461

申请日：2013-06-14

Applicant: Elfar Adalsteinsson ,  Luca Daniel ,  Bastien Guerin ,  Zohaib Mahmood ,  Markus Vester ,  Lawrence Wald

Inventor： Elfar Adalsteinsson ,  Luca Daniel ,  Bastien Guerin ,  Zohaib Mahmood ,  Markus Vester ,  Lawrence Wald

IPC: G01V3/00 ,  G01R33/36 ,  G01R33/561

Abstract: A method of determining a decoupling matrix of a decoupling system for an array of coils of a parallel transmission magnetic resonance imaging (MRI) system includes obtaining impedance matrix data for the array of coils without the decoupling system, determining, based on the impedance matrix data for the array of coils, an objective function representative of deviation from a decoupled operating condition for the array of coils in which the array of coils are decoupled via the decoupling system, and defining, with a processor, a decoupling matrix representative of a set of impedances of the decoupling system with an iterative procedure that optimizes elements of the decoupling matrix to minimize the objective function and reach the decoupled operating condition.

公开(公告)号：US20140292337A1

公开(公告)日：2014-10-02

申请号：US13918461

申请日：2013-06-14

Applicant: Elfar Adalsteinsson ,  Luca Daniel ,  Bastien Guerin ,  Zohaib Mahmood ,  Markus Vester ,  Lawrence Wald

Inventor： Elfar Adalsteinsson ,  Luca Daniel ,  Bastien Guerin ,  Zohaib Mahmood ,  Markus Vester ,  Lawrence Wald

IPC: G01R33/36

CPC classification number: G01R33/365 ,  G01R33/5612

Abstract: A method of determining a decoupling matrix of a decoupling system for an array of coils of a parallel transmission magnetic resonance imaging (MRI) system includes obtaining impedance matrix data for the array of coils without the decoupling system, determining, based on the impedance matrix data for the array of coils, an objective function representative of deviation from a decoupled operating condition for the array of coils in which the array of coils are decoupled via the decoupling system, and defining, with a processor, a decoupling matrix representative of a set of impedances of the decoupling system with an iterative procedure that optimizes elements of the decoupling matrix to minimize the objective function and reach the decoupled operating condition.

Abstract translation: 确定并行传输磁共振成像（MRI）系统的线圈阵列的去耦系统的去耦矩阵的方法包括：获得用于没有去耦系统的线圈阵列的阻抗矩阵数据，基于阻抗矩阵数据 对于线圈阵列，表示偏离线圈阵列的去耦工作条件的目标函数，其中线圈阵列经由去耦系统去耦，并且用处理器定义代表一组线圈的去耦矩阵 解耦系统的阻抗具有优化去耦矩阵的元素以最小化目标函数并达到解耦操作条件的迭代过程。

公开(公告)号：US20150323623A1

公开(公告)日：2015-11-12

申请号：US14705576

申请日：2015-05-06

Applicant: Elfar Adalsteinsson ,  Luca Daniel ,  Bastien Guerin ,  Boris Keil ,  Zohaib Mahmood ,  Markus Vester ,  Lawrence Wald

Inventor： Elfar Adalsteinsson ,  Luca Daniel ,  Bastien Guerin ,  Boris Keil ,  Zohaib Mahmood ,  Markus Vester ,  Lawrence Wald

IPC: G01R33/36 ,  G01R33/385 ,  G01R33/561 ,  G01R33/34

CPC classification number: G01R33/365 ,  G01R33/34076 ,  G01R33/34092 ,  G01R33/3415 ,  G01R33/3657 ,  G01R33/385 ,  G01R33/5612

Abstract: A magnetic resonance imaging (MRI) system includes a plurality of transmitters to generate a parallel transmission radio frequency (RF) pulse, an array of coils coupled to the plurality of transmitters to apply the parallel transmission RF pulse to a subject, and a decoupling system connected to the plurality of transmitters and the array of coils. The decoupling system includes a plurality of hybrid couplers, each hybrid coupler of the plurality of hybrid couplers being coupled to a respective pair of the plurality of transmitters and to a respective pair of the array of coils. The plurality of hybrid couplers are configured to diagonalize an impedance matrix of the plurality of coils.

Abstract translation: 磁共振成像（MRI）系统包括多个发射器以产生并行传输射频（RF）脉冲，耦合到多个发射器的线圈阵列以将并行发射RF脉冲施加到对象，以及解耦系统 连接到多个发射器和线圈阵列。 解耦系统包括多个混合耦合器，多个混合耦合器的每个混合耦合器耦合到相应的多个发射器对以及相应的一对线圈阵列。 多个混合耦合器被配置为使多个线圈的阻抗矩阵对角化。

公开(公告)号：US07487078B1

公开(公告)日：2009-02-03

申请号：US10326679

申请日：2002-12-20

Applicant: Joel R. Phillips ,  Luca Daniel

Inventor： Joel R. Phillips ,  Luca Daniel

IPC: G06F17/50 ,  G06G7/62

CPC classification number: G06F17/5036

Abstract: A reduced order model of a distributed time invariant system is produced by projecting system matrices onto smaller matrices, interpolating the matrices and placing into a state-space system. The system matrices are an internal representation of the distributed time invariant system which comprises a description of the system to be modeled, mainly, for example, its inputs and outputs. The method is applied to distributed systems and guarantees accuracy in complicated systems and produces well-behaved models appropriate for use in simulators and simulations.

Abstract translation: 通过将系统矩阵投影到较小的矩阵上，内插矩阵并置入状态空间系统，产生分布式时变不变系统的简化阶模型。 系统矩阵是分布式时间不变系统的内部表示，其包括要被建模的系统的描述，主要是例如其输入和输出。 该方法应用于分布式系统，保证了复杂系统的准确性，并且可以生成适用于模拟器和仿真的性能良好的模型。