专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20050110490A1 Phantom for production of controllable fMRI signal 有权
标题翻译： Phantom用于生产可控的fMRI信号
公开(公告)号：US20050110490A1
公开(公告)日：2005-05-26
申请号：US10957822
申请日：2004-10-04
申请人： Qun Zhao , G. Duensing , Hu Cheng , William Edelstein
发明人： Qun Zhao , G. Duensing , Hu Cheng , William Edelstein
IPC分类号： G01R33/32 , G01R33/58 , G01V3/00 , A61B5/05
CPC分类号： G01R33/32 , G01R33/4806 , G01R33/58
摘要： The subject invention relates to a method and apparatus for producing stimulated MRI data. In an embodiment, a remote-controlled “smart phantom” can produce simulated data. The simulated data can be acquired from a MRI system. The subject device can generate control signals and send the generated control signals to secondary coils/probes placed in the subject smart phantom. The control signals determine the current flow in the secondary coils/probes, which act as local spin magnetization amplifiers and thus produce regions of variable contrast to noise ratio. The control signals can be generated with various parameters, such as BOLD models, different levels of contrast-to-noise ratio (CNR), signal intensities, and physiological signals. Comparisons can be made with the widely-used simulated data by computers. Validation of the subject smart phantom can be performed with both theoretical analysis and data of human subjects.
摘要翻译：本发明涉及一种用于产生模拟MRI数据的方法和装置。在一个实施例中，远程控制的“智能幻影”可以产生模拟数据。可以从MRI系统获取模拟数据。主体装置可以产生控制信号，并将产生的控制信号发送到放置在主体智能幻影中的次级线圈/探头。控制信号确定次级线圈/探头中的电流，其作为局部自旋磁化放大器，从而产生可变对比度噪声比的区域。控制信号可以用诸如BOLD模型，不同等级的对比噪声比（CNR），信号强度和生理信号等各种参数产生。可以用计算机广泛使用的模拟数据进行比较。可以通过理论分析和人类受试者的数据进行主体智能幻影的验证。

2. 发明申请

US20070088211A1 Method and apparatus for producing simulated fMRI data 审中-公开
标题翻译：用于产生模拟fMRI数据的方法和装置
公开(公告)号：US20070088211A1
公开(公告)日：2007-04-19
申请号：US11452605
申请日：2006-06-13
申请人： Hu Cheng , Qun Zhao , William Edelstein , G. Duensing
发明人： Hu Cheng , Qun Zhao , William Edelstein , G. Duensing
IPC分类号： A61B5/05
CPC分类号： A61B5/055
摘要： The subject invention relates to a method and apparatus for producing stimulated MRI data. In an embodiment, a remote-controlled “smart phantom” can produce simulated data. The simulated data can be acquired from a MRI system. The subject device can generate control signals and send the generated control signals to secondary coils/probes placed in the subject smart phantom. The control signals determine the current flow in the secondary coils/probes, which act as local spin magnetization amplifiers and thus produce regions of variable contrast to noise ratio. The control signals can be generated with various parameters, such as BOLD models, different levels of contrast-to-noise ratio (CNR), signal intensities, and physiological signals. Comparisons can be made with the widely-used simulated data by computers. Validation of the subject smart phantom can be performed with both theoretical analysis and data of human subjects.
摘要翻译：本发明涉及用于产生刺激的MRI数据的方法和装置。在一个实施例中，远程控制的“智能幻影”可以产生模拟数据。可以从MRI系统获取模拟数据。主体装置可以产生控制信号，并将产生的控制信号发送到放置在主体智能幻影中的次级线圈/探头。控制信号确定次级线圈/探头中的电流，其作为局部自旋磁化放大器，从而产生可变对比度噪声比的区域。控制信号可以用诸如BOLD模型，不同等级的对比噪声比（CNR），信号强度和生理信号等各种参数产生。可以用计算机广泛使用的模拟数据进行比较。可以通过理论分析和人类受试者的数据进行主体智能幻影的验证。

3. 发明申请

US20050253580A1 Method of pseudopolar acquisition and reconstruction for dynamic MRI 审中-公开
标题翻译：动态MRI的伪极获取和重建方法
公开(公告)号：US20050253580A1
公开(公告)日：2005-11-17
申请号：US11128731
申请日：2005-05-13
申请人： Feng Huang , Hu Cheng , G. Duensing
发明人： Feng Huang , Hu Cheng , G. Duensing
IPC分类号： G01R33/54 , G01R33/56 , G01V3/00
CPC分类号： G01R33/54 , G01R33/56 , G01R33/5608
摘要： The subject invention pertains to a method for magnetic resonance imaging (MRI) involving the acquisition of pseudo-polar K-space data and creation of an MRI image from the pseudo-polar K-space data. In an embodiment, the subject method can incorporate a scan scheme for acquiring pseudo-polar K-space data and corresponding reconstruction technique. Advantageously, the subject method can result in reduced motion artifact in dynamic MRI with short acquisition time and short reconstruction time. In a specific embodiment, the subject method can incorporate a reconstruction method utilizing Fractional FFT in MRI. The subject method can allow the acquisition of pseudo-polar K-space data. In a specific embodiment, the acquisition of the pseudo-polar is accomplished by one shot. Other acquisition techniques can also be utilized in accordance with the subject invention. In an embodiment, the pseudo-polar K-space data can lie at the origin of K-space and on N linearly growing concentric squares, with N≦2, where the distance between adjacent concentric squares is the same as the distance from the origin to the innermost square. The K-space data on the N concentric squares are equally spaced from adjacent data points on the same square, including data points at the corners of each square.
摘要翻译：本发明涉及一种用于磁共振成像（MRI）的方法，其涉及从伪极坐标K空间数据获取伪极坐标K空间数据和创建MRI图像。在一个实施例中，本发明方法可以包括用于获取伪极坐标K空间数据和对应的重建技术的扫描方案。有利地，本方法可以导致动态MRI中的运动伪影减少，获取时间短和重建时间短。在一个具体实施例中，本发明方法可以结合利用MRI中的分数FFT的重建方法。主题方法可以允许获取伪极化K空间数据。在具体实施例中，伪极性的获取通过一次镜头来实现。根据本发明也可以使用其他采集技术。在一个实施例中，伪极化K空间数据可以位于K空间的原点和N个线性增长的同心平方上，其中N <= 2，其中相邻同心正方形之间的距离与距离起源于最内层的广场。 N个同心圆弧上的K空间数据与同一平方的相邻数据点相等间隔，包括每个正方形角的数据点。

4. 发明申请

US20050194975A1 Method and apparatus for serial array excitation for high field magnetic resonance imaging 失效
标题翻译：用于高场磁共振成像的串联阵列激励的方法和装置
公开(公告)号：US20050194975A1
公开(公告)日：2005-09-08
申请号：US11074964
申请日：2005-03-07
申请人： G. Duensing
发明人： G. Duensing
IPC分类号： G01R33/3415 , G01R33/561 , G01V3/00
CPC分类号： G01R33/3415 , G01R33/5611 , G01R33/5659
摘要： The subject invention pertains to methods and apparatus for producing excitation for magnetic resonance imaging (MRI) from a plurality of local exciting elements such that each local exciting element's excitation is independent of the other local exciting elements' excitation. The methods and apparatus of the subject invention can be utilized in magnetic resonance imaging (MRI) and in magnetic resonance spectroscopy (MRS), where MRI produces a magnitude for each pixel that combines many frequency components, typically for magnitude images, and MRS produces a spectrum of outputs over a range of frequencies for each pixel, typically a spectral output. The subject method and apparatus can be utilized for exciting proton, and/or other imaging materials relating to spin magnetization, such as, but not limited to, phosphorous, carbon, and fluorine. In a specific embodiment, the subject invention achieves the independence of the local exciting elements' excitations via serial means, such that excitation is produced by each local exciting element at a different time than the other local exiting elements.
摘要翻译：本发明涉及用于从多个局部激励元件产生用于磁共振成像（MRI）的激励的方法和装置，使得每个局部激发元件的激发独立于其他局部激发元件的激发。本发明的方法和装置可用于磁共振成像（MRI）和磁共振波谱（MRS），其中MRI产生用于组合许多频率分量的每个像素的幅度，通常用于幅度图像，MRS产生每个像素的频率范围内的输出频谱，通常是频谱输出。本发明的方法和装置可以用于激发质子，和/或与自旋磁化有关的其它成像材料，例如但不限于磷，碳和氟。在具体实施例中，本发明通过串联装置实现了局部激励元件的激励的独立性，使得在与其它局部出射元件不同的时间处由每个局部激励元件产生激励。

5. 发明申请

US20060055405A1 Method and apparatus for enhanced multiple coil imaging 失效
公开(公告)号：US20060055405A1
公开(公告)日：2006-03-16
申请号：US11269968
申请日：2005-11-08
申请人： G. Duensing , Steve Varosi , Scott King
发明人： G. Duensing , Steve Varosi , Scott King
IPC分类号： G01V3/00
CPC分类号： G01R33/3415 , G01R33/5608 , G01R33/5611
摘要： The subject invention pertains to a method and apparatus for enhanced multiple coil imaging. The subject invention is advantageous for use in imaging devices, such as MRIs where multiple images can be combined to form a single composite image. In one specific embodiment, the subject method and apparatus utilize a novel process of converting from the original signal vector in the time domain to allow the subject invention to be installed in-line with current MRI devices.

6. 发明申请

US20070013375A1 Method and apparatus for adaptive channel reduction for parallel imaging 失效
标题翻译：用于并行成像的自适应信道减少的方法和装置
公开(公告)号：US20070013375A1
公开(公告)日：2007-01-18
申请号：US11430384
申请日：2006-05-08
申请人： James Akao , G. Duensing , Feng Huang
发明人： James Akao , G. Duensing , Feng Huang
IPC分类号： G01V3/00
CPC分类号： G01R33/5611
摘要： The subject invention pertains to method and apparatus for parallel imaging. The subject method can be utilized with imaging systems utilizing parallel imaging techniques. In a specific embodiment, the subject invention can be used in magnetic resonance imaging (MRI). A specific embodiment of the subject invention can reduce parallel reconstruction CPU and system resources usage by reducing the number of channels employed in the parallel reconstruction from the M channel signals to a lower number of channel signals. In a specific embodiment, sensitivity map information can be used in the selection of the M channel signals to be used, and how the selected channel signals are to be combined, to create the output channel signals. In an embodiment, for a given set of radio-frequency (RF) elements, an optimal choice of reconstructed channel modes can be made using prior view information and/or sensitivity data for the given slice. The subject invention can utilize parallel imaging speed up in multiple directions.
摘要翻译：本发明涉及用于并行成像的方法和装置。本方法可以利用利用并行成像技术的成像系统。在具体实施方案中，本发明可用于磁共振成像（MRI）。本发明的具体实施例可以通过将并行重建中采用的信道数量从M个信道信号减少到较少数量的信道信号来减少并行重建CPU和系统资源的使用。在具体实施例中，灵敏度映射信息可以用于选择要使用的M个信道信号，以及如何组合所选择的信道信号，以产生输出信道信号。在一个实施例中，对于给定的一组射频（RF）元件，可以使用给定切片的先前视图信息和/或灵敏度数据来进行重建信道模式的最佳选择。本发明可以在多个方向上利用并行成像加速。

7. 发明申请

US20060076955A1 Method and apparatus for discrete shielding of volume RFcoil arrays 失效
公开(公告)号：US20060076955A1
公开(公告)日：2006-04-13
申请号：US11245500
申请日：2005-10-07
申请人： Charles Saylor , G. Duensing
发明人： Charles Saylor , G. Duensing
IPC分类号： G01V3/00
CPC分类号： G01R33/422 , G01R33/34046
摘要： The subject invention pertains to a technique and device that can isolate and separate resultant electromagnetic fields of volume coils at high frequency. In an embodiment, an RF shield can be used to isolate and separate resultant electromagnetic fields. In an embodiment, the shield can have a cylindrical shape that can form a partially closed volume in which an object to be imaged, or sample, can be inserted. In an embodiment, the RF shield can be part of a RF coil. In a specific embodiment, some parts of a volume coil can be inside a shield, and the other parts of a volume coil can be outside the shield. The shielding of some of the parts of a volume coil can create conductor patterns corresponding to the specific parts inside the shield and the specific parts outside the shield. In an embodiment, two or more conductor patterns can be placed in proximity to the same shield and either be driven independently, driven together, or act as receiving elements, combined or uncombined. This embodiment is advantageous because the combination of conductor patterns can be optimized by the flexibility of separating the fields of end-rings from the fields of leg currents.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式