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1. 发明授权

US06961455B2 Automatic coil selection of multi-receiver MR data using fast prescan data analysis 有权
标题翻译：使用快速预扫描数据分析自动线圈选择多接收机MR数据
公开(公告)号：US06961455B2
公开(公告)日：2005-11-01
申请号：US10785751
申请日：2004-02-24
申请人： Jingfei Ma , Guosheng Tan
发明人： Jingfei Ma , Guosheng Tan
IPC分类号： A61B5/055 , G01R33/3415 , G01R33/48 , G01R33/54 , G06K9/00
CPC分类号： G01R33/3415 , G01R33/54 , G06Q50/22
摘要： Automatic coil selection is based on determining an index gauge for a corresponding k-space data line acquired for each preselected coil during a prescan. Reliance on manual coil selection and markers is eliminated by adaptively determining the coils of an MR system that produce a preferred sensitivity to a desired field-of-view (FOV). The fast scan data is used to determine those coils most sensitive to the FOV and reject coil(s) least sensitive. Using only data acquired with the most sensitive coils, SNR is increased and unwanted artifacts are reduced in the final data acquisition and image reconstruction. Through automatic and adaptive selection/deselection, the invention reduces the susceptibility to human error, and therefore results in higher quality images.
摘要翻译：自动线圈选择基于在预扫描期间为每个预选线圈获取的相应k空间数据线确定索引量规。通过自适应地确定产生对期望视野（FOV）的优选灵敏度的MR系统的线圈，消除了手动线圈选择和标记的依赖性。快速扫描数据用于确定对FOV和拒绝线圈最敏感的那些线圈。仅使用最敏感线圈获得的数据，在最终的数据采集和图像重建中，SNR增加，并且减少不需要的伪影。通过自动选择/取消选择，本发明降低了对人为错误的敏感性，从而导致更高质量的图像。

2. 发明授权

US06724923B2 Automatic coil selection of multi-receiver MR data using fast prescan data analysis 失效
公开(公告)号：US06724923B2
公开(公告)日：2004-04-20
申请号：US09681473
申请日：2001-04-13
申请人： Jingfei Ma , Guosheng Tan
发明人： Jingfei Ma , Guosheng Tan
IPC分类号： G06K900
CPC分类号： G01R33/3415 , G01R33/54 , G06Q50/22
摘要： Automatic coil selection is based on determining an index gauge for a corresponding k-space data line acquired for each preselected coil during a prescan. Reliance on manual coil selection and markers is eliminated by adaptively determining the coils of an MR system that produce a preferred sensitivity to a desired field-of-view (FOV). The fast scan data is used to determine those coils most sensitive to the FOV and reject coil(s) least sensitive. Using only data acquired with the most sensitive coils, SNR is increased and unwanted artifacts are reduced in the final data acquisition and image reconstruction. Through automatic and adaptive selection/deselection, the invention reduces the susceptibility to human error, and therefore results in higher quality images.

3. 发明授权

US06272369B1 Method for optimizing fat suppression using the chemical shift selective MR imaging technique 失效
标题翻译：使用化学位移选择性MR成像技术优化脂肪抑制的方法
公开(公告)号：US06272369B1
公开(公告)日：2001-08-07
申请号：US09235459
申请日：1999-01-22
申请人： Guosheng Tan
发明人： Guosheng Tan
IPC分类号： A61B5055
CPC分类号： G01R33/4828 , G01R33/485
摘要： The signal from fat is suppressed by a CHESS pulse sequence that precedes each imaging pulse sequence in an MRI scan. The effectiveness of the suppression is optimized by calculating a flip angle for the ChemSat RF saturation pulse in the CHESS pulse sequence based in part on prescribed scan parameters, such as the number of interleaved slices to be acquired.
摘要翻译：来自脂肪的信号被MRI扫描中的每个成像脉冲序列之前的CHESS脉冲序列抑制。通过基于规定的扫描参数（例如要获取的交错切片的数量）计算CHESS脉冲序列中的ChemSat RF饱和脉冲的翻转角来优化抑制的有效性。

4. 发明授权

US06990223B2 Adaptive data differentiation and selection from multi-coil receiver to reduce artifacts in reconstruction 失效
公开(公告)号：US06990223B2
公开(公告)日：2006-01-24
申请号：US10790364
申请日：2004-03-01
申请人： Jingfei Ma , Guosheng Tan
发明人： Jingfei Ma , Guosheng Tan
IPC分类号： G06K9/00
CPC分类号： G01R33/3415 , G01R33/54
摘要： An automatic and adaptive MR data selection technique for use with a multi-receiver coil assembly in an MR imaging device is disclosed. The invention includes acquiring image data from a plurality of receiver coils and determining an index gauge for each of the images. The index gauge is a representation of the position of a given receiver coil within a desired field-of-view (FOV). The index gauges are compared and any image data set having an index gauge demonstrating a less than optimal position of the given receiver coil with respect to the desired FOV is removed based on the index gauges and the comparison. A final image can be reconstructed using the remaining image data sets. The final image is reconstructed from data having overall reduced noise, and therefore reduced artifacts.

5. 发明授权

US06483308B1 Method and apparatus for processing MRI data acquired with a plurality of coils using dixon techniques 有权
标题翻译：用Dixon技术处理用多个线圈获得的MRI数据的方法和装置
公开(公告)号：US06483308B1
公开(公告)日：2002-11-19
申请号：US09652744
申请日：2000-08-31
申请人： Jingfei Ma , Guosheng Tan , Saban Kurucay
发明人： Jingfei Ma , Guosheng Tan , Saban Kurucay
IPC分类号： G01V300
CPC分类号： G01R33/4828 , G01R33/3415
摘要： Three MRI acquisitions are performed to acquire data from which separate water and fat images may be reconstructed using a three-point Dixon technique. The NMR data is acquired with a phased array coil having four separate coil elements. Low resolution images are reconstructed from the acquired NMR data sets and used to calculate phase corrections which are used to correct reconstructed high resolution images. The corrected high resolution images are processed using the Dixon technique to produce fat and water images for each coil element which are combined into a single fat and a single water image.
摘要翻译：执行三次MRI采集以获取可以使用三点Dixon技术来重建单独的水和脂肪图像的数据。用具有四个分开的线圈元件的相控阵线圈获得NMR数据。从获取的NMR数据集重建低分辨率图像，并用于计算用于校正重建的高分辨率图像的相位校正。使用Dixon技术处理校正的高分辨率图像，以将每个线圈元件的脂肪和水图像组合成单个脂肪和单个水图像。

6. 发明授权

US06738501B2 Adaptive data differentiation and selection from multi-coil receiver to reduce artifacts in reconstruction 失效
公开(公告)号：US06738501B2
公开(公告)日：2004-05-18
申请号：US09681472
申请日：2001-04-13
申请人： Jingfei Ma , Guosheng Tan
发明人： Jingfei Ma , Guosheng Tan
IPC分类号： G06K900
CPC分类号： G01R33/3415 , G01R33/54
摘要： An automatic and adaptive MR data selection technique for use with a multi-receiver coil assembly in an MR imaging device is disclosed. The invention includes acquiring image data from a plurality of receiver coils and determining an index gauge for each of the images. The index gauge is a representation of the position of a given receiver coil within a desired field-of-view (FOV). The index gauges are compared and any image data set having an index gauge demonstrating a less than optimal position of the given receiver coil with respect to the desired FOV is removed based on the index gauges and the comparison. A final image can be reconstructed using the remaining image data sets. The final image is reconstructed from data having overall reduced noise, and therefore reduced artifacts.

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