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1. 发明授权

US08483457B2 System and method of image artifact reduction using self-navigated real-time phase correction in echo planar imaging 有权
标题翻译：在回波平面成像中使用自导航实时相位校正的图像伪像减少的系统和方法
公开(公告)号：US08483457B2
公开(公告)日：2013-07-09
申请号：US12831562
申请日：2010-07-07
申请人： Richard Scott Hinks , Dan Xu
发明人： Richard Scott Hinks , Dan Xu
IPC分类号： G06K9/00
CPC分类号： G01R33/56554 , A61B5/055 , A61B5/7285 , G01R33/56563
摘要： An apparatus and method include a computer programmed to implement a scan sequence configured to elicit scan data, wherein the scan sequence comprises an echo planar imaging (EPI) sequence configured to elicit the image data and to acquire the scan data. The computer is also programmed to manipulate the scan data to determine a first plurality of phase errors in the image data responsible for a Nyquist ghost, wherein the manipulated scan data is free of navigator echo data, remove the first plurality of phase errors from the image data, and reconstruct an image based on the image data having the first plurality of phase errors removed therefrom.
摘要翻译：一种装置和方法包括被编程为实现被配置为引出扫描数据的扫描序列的计算机，其中扫描序列包括被配置为引出图像数据并获取扫描数据的回波平面成像（EPI）序列。计算机还被编程为操纵扫描数据以确定负责奈奎斯特幽灵的图像数据中的第一多个相位误差，其中所述被操纵的扫描数据没有导航回波数据，从图像中去除第一多个相位误差数据，并且基于从其中移除了第一多个相位误差的图像数据重建图像。

2. 发明申请

US20120008842A1 SYSTEM AND METHOD OF IMAGE ARTIFACT REDUCTION USING SELF-NAVIGATED REAL-TIME PHASE CORRECTION IN ECHO PLANAR IMAGING 有权
标题翻译：使用自主导航的实时相位校正在ECHO平面图像中的图像艺术减少的系统和方法
公开(公告)号：US20120008842A1
公开(公告)日：2012-01-12
申请号：US12831562
申请日：2010-07-07
申请人： Richard Scott Hinks , Dan Xu
发明人： Richard Scott Hinks , Dan Xu
IPC分类号： G06K9/00 , G01R33/48
CPC分类号： G01R33/56554 , A61B5/055 , A61B5/7285 , G01R33/56563
摘要： An apparatus and method include a computer programmed to implement a scan sequence configured to elicit scan data, wherein the scan sequence comprises an echo planar imaging (EPI) sequence configured to elicit the image data and to acquire the scan data. The computer is also programmed to manipulate the scan data to determine a first plurality of phase errors in the image data responsible for a Nyquist ghost, wherein the manipulated scan data is free of navigator echo data, remove the first plurality of phase errors from the image data, and reconstruct an image based on the image data having the first plurality of phase errors removed therefrom.
摘要翻译：一种装置和方法包括被编程为实现被配置为引出扫描数据的扫描序列的计算机，其中扫描序列包括被配置为引出图像数据并获取扫描数据的回波平面成像（EPI）序列。计算机还被编程为操纵扫描数据以确定负责奈奎斯特幽灵的图像数据中的第一多个相位误差，其中所述被操纵的扫描数据没有导航回波数据，从图像中去除第一多个相位误差数据，并且基于从其中移除了第一多个相位误差的图像数据重建图像。

3. 发明授权

US08680860B2 System and method for reducing localized signal fluctuation 有权
标题翻译：减少局部信号波动的系统和方法
公开(公告)号：US08680860B2
公开(公告)日：2014-03-25
申请号：US12962945
申请日：2010-12-08
申请人： Dan Xu , Jian Zhang , Richard Scott Hinks , Kevin F. King
发明人： Dan Xu , Jian Zhang , Richard Scott Hinks , Kevin F. King
IPC分类号： G01V3/00
CPC分类号： G01R33/4838 , G01R33/5607
摘要： A system and method is disclosed for eliminating localized fluctuation artifacts caused by fat signal contamination in MR images, the system includes a magnetic resonance imaging (MRI) system having a plurality of gradient coils positioned about a bore of a magnet, and an RF transceiver system and an RF switch controlled by a pulse module to transmit RF signals to an RF coil assembly to acquire MR images, and a computer programmed to apply a spectral-spatial fat saturation pulse, apply a slice selection gradient pulse, acquire imaging data of an imaging slice of interest, and generate an image.
摘要翻译：公开了一种用于消除由MR图像中的脂肪信号污染引起的局部波动伪影的系统和方法，该系统包括具有围绕磁体的孔定位的多个梯度线圈的磁共振成像（MRI）系统，以及RF收发器系统以及由脉冲模块控制的RF开关以将RF信号传输到RF线圈组件以获取MR图像，以及被编程为应用频谱 - 空间脂肪饱和脉冲的计算机，应用切片选择梯度脉冲，获取成像的成像数据切片感兴趣，并生成图像。

4. 发明授权

US07420370B2 Method and apparatus of echo planar imaging with real-time determination of phase correction coefficients 有权
标题翻译：回波平面成像的方法和装置，实时确定相位校正系数
公开(公告)号：US07420370B2
公开(公告)日：2008-09-02
申请号：US11841542
申请日：2007-08-20
申请人： Richard Scott Hinks , Bryan James Mock , Frederick Joseph Frigo , Xiaoli Zhao
发明人： Richard Scott Hinks , Bryan James Mock , Frederick Joseph Frigo , Xiaoli Zhao
IPC分类号： G01V3/00
CPC分类号： G01R33/56341 , G01R33/4806 , G01R33/4835 , G01R33/5611 , G01R33/56554
摘要： The present invention provides an apparatus and method of phase correction whereby changes in phase characteristics are measured during data acquisition and, accordingly, phase correction parameters that are applied during image reconstruction are updated in real-time. This adaptive and dynamic phase correction reduces variability in image fidelity during the course of long MR scans, such as EPI scans, and provides consistent artifact reduction during the course of an MR scan.
摘要翻译：本发明提供一种相位校正的装置和方法，其中在数据采集期间测量相位特性的变化，因此，在图像重构期间应用的相位校正参数被实时更新。这种自适应和动态相位校正减少了长MR扫描过程（如EPI扫描）过程中图像保真度的变异性，并在MR扫描过程中提供了一致的假象减少。

5. 发明授权

US06983181B2 Spatial encoding MR data of a moving subject using a higher-order gradient field 失效
公开(公告)号：US06983181B2
公开(公告)日：2006-01-03
申请号：US10063507
申请日：2002-05-01
申请人： Richard Scott Hinks , Kevin F. King , Jason A. Polzin
发明人： Richard Scott Hinks , Kevin F. King , Jason A. Polzin
IPC分类号： A61B5/55
CPC分类号： G01R33/56375 , G01R33/385
摘要： The present invention includes a technique for use with magnetic resonance imaging that includes the application of a non-linear, higher-order gradient field in the presence of a moving object to be scanned. MR data is acquired as the object moves through the non-linear gradient field. Resulting images are contiguous and do not require the patching together of data in either k-space or image space and result in an image with expanded FOV in a longitudinal direction of the moving object.

6. 发明授权

US06507190B1 Method and apparatus for compensating polarizing fields in magnetic resonance imaging 有权
标题翻译：用于补偿磁共振成像中的偏振场的方法和装置
公开(公告)号：US06507190B1
公开(公告)日：2003-01-14
申请号：US09630101
申请日：2000-08-01
申请人： Richard Scott Hinks , John E. Lorbiecki
发明人： Richard Scott Hinks , John E. Lorbiecki
IPC分类号： G01V300
CPC分类号： G01R33/389 , G01R33/56563 , G01R33/58
摘要： Monitor signals are acquired in an interleaved manner during a scan with an MRI system. Frequency changes caused by variations in the polarizing field B0 are measured using the monitor signals, and these measured frequency changes are employed to compensate image data acquired during the scan. Electrical currents are produced in a set of shim coils that shim the polarizing field B0 in the immediate vicinity proximal to the monitor coil.
摘要翻译：在使用MRI系统的扫描期间，以交错方式获取监视信号。使用监视信号测量由偏振场B0的变化引起的频率变化，并且采用这些测量的频率变化来补偿在扫描期间获取的图像数据。在一组垫片线圈中产生电流，该偏振线圈使偏振场B0靠近监视器线圈附近。

7. 发明授权

US06160397A Fast spin echo prescan for magnetic resonance imaging systems 有权
标题翻译：用于磁共振成像系统的快速自旋回波预扫描
公开(公告)号：US06160397A
公开(公告)日：2000-12-12
申请号：US223527
申请日：1998-12-30
申请人： Sheila S. Washburn , Richard Scott Hinks
发明人： Sheila S. Washburn , Richard Scott Hinks
IPC分类号： G01R33/561 , G01V3/00
CPC分类号： G01R33/56554 , G01R33/5617
摘要： Correcting gradients for a phase encoding axis in an MRI imaging system are provided in an FSE pulse sequence to correct phase errors in echo signals, such as due to effects of cross term eddy currents induced by slice select gradients. Correcting gradients to be applied to the logical phase encoding axis are identified in a prescan sequence. An initial correcting gradient is identified for correcting phase errors resulting from an initial slice select gradient pulse. Subsequent, bipolar gradient pulses for the phase encoding axis are then derived from the initial correcting gradient. The prescan technique may be used in conjunction with other prescanning sequences used to determine additional corrections for the FSE sequence. The correcting gradients reduce or eliminate image artifacts resulting from such factors as cross term eddy currents in oblique scans. An averaging sequence may be implemented to reduce the likelihood for influencing the compensation pulse calculation errors. When implemented, the logical axes may be rotated to provide any desired oblique orientation.
摘要翻译： MRI成像系统中的相位编码轴的校正梯度以FSE脉冲序列提供，以校正回波信号中的相位误差，例如由于切片选择梯度引起的交叉涡流的影响。以预扫描序列识别要应用于逻辑相位编码轴的校正梯度。识别用于校正由初始切片选择梯度脉冲产生的相位误差的初始校正梯度。随后，然后从初始校正梯度导出用于相位编码轴的双极梯度脉冲。预扫描技术可以与用于确定FSE序列的附加校正的其他预扫描序列结合使用。校正梯度减少或消除由倾斜扫描中的横向涡流等因素引起的图像伪影。可以实现平均序列以减少影响补偿脉冲计算误差的可能性。当实现时，可以旋转逻辑轴以提供任何期望的倾斜取向。

8. 发明申请

US20090108843A1 METHOD AND APPARATUS FOR CORRECTING DISTORTION IN MR IMAGES CAUSED BY METALLIC IMPLANTS 有权
标题翻译：用于校正由金属植入物引起的MR图像中的失真的方法和装置
公开(公告)号：US20090108843A1
公开(公告)日：2009-04-30
申请号：US11925141
申请日：2007-10-26
申请人： Kevin M. Koch , Richard Scott Hinks , David Thomas Gering
发明人： Kevin M. Koch , Richard Scott Hinks , David Thomas Gering
IPC分类号： G01R33/565
CPC分类号： G01R33/56536 , G01R33/5616
摘要： A technique for reconstructing a corrected MR image from MR images distorted by foreign object induced magnetic fields includes locating a foreign object in a subject and defining a localized area of a field of view about the foreign object where a magnetic field distortion adversely affects a first magnetic distortion correction technique. The first magnetic distortion correction technique is applied to the field of view other than in the localized area. A second magnetic distortion correction technique is applied to the localized area and the results of the application of the first and second magnetic distortion correction techniques are combined. An image is reconstructed based on the results of the application of the first and second magnetic distortion correction techniques.
摘要翻译：用于由异物感应磁场扭曲的MR图像重建校正的MR图像的技术包括将异物定位在对象中并且定义关于异物的视场的局部区域，其中磁场失真对第一磁场有不利影响畸变校正技术。第一磁失真校正技术被应用于局部区域以外的视场。将第二磁失真校正技术应用于局部区域，并且结合第一和第二磁失真校正技术的应用结果。基于第一和第二磁失真校正技术的应用结果重建图像。

9. 发明授权

US07098662B2 Method and system of MR imaging with variable readout gradient filtering 有权
公开(公告)号：US07098662B2
公开(公告)日：2006-08-29
申请号：US11083272
申请日：2005-03-17
申请人： Richard Scott Hinks , Bryan J. Mock , Bruce D. Collick , Frederick Joseph Frigo
发明人： Richard Scott Hinks , Bryan J. Mock , Bruce D. Collick , Frederick Joseph Frigo
IPC分类号： G01V3/00
CPC分类号： G01R33/56554
摘要： A method and system of MR imaging where variable readout gradient filtering (VRGF) is carried out after MR data acquired during gradient field transitions has been phase-corrected. Thus, phase errors can be removed prior to VRGF re-sampling of the MR data. As such, image artifacts due to phase errors can be reduced, improving image fidelity and reducing ghosting especially for poorly calibrated systems.

10. 发明授权

US06492815B2 Method and apparatus for evaluating signals produced in a magnetic resonance imaging system 失效
标题翻译：用于评估在磁共振成像系统中产生的信号的方法和装置
公开(公告)号：US06492815B2
公开(公告)日：2002-12-10
申请号：US09748576
申请日：2000-12-22
申请人： Richard Scott Hinks , John E. Lorbiecki, Sr. , Robert S. Stormont , Cherik Bulkes
发明人： Richard Scott Hinks , John E. Lorbiecki, Sr. , Robert S. Stormont , Cherik Bulkes
IPC分类号： G01V300
CPC分类号： G01R33/28
摘要： A plurality of magnetic field induction coils and a radio frequency (RF) detection coil are supported by a frame which is inserted into the bore of an MRI system to detect magnetic fields produced by gradient pulses and RF pulses produced during a scan. The detected magnetic fields are processed to produce gradient waveforms and RF pulse waveforms that are displayed to the user.
摘要翻译：多个磁场感应线圈和射频（RF）检测线圈由插入到MRI系统的孔中的框架支撑，以检测由扫描期间产生的梯度脉冲和RF脉冲产生的磁场。检测到的磁场被处理以产生向用户显示的梯度波形和RF脉冲波形。

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