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1. 发明授权

US06400151B1 Method and apparatus for the acquisition of data for magnetic resonance imaging 有权
标题翻译：用于采集磁共振成像数据的方法和装置
公开(公告)号：US06400151B1
公开(公告)日：2002-06-04
申请号：US09482031
申请日：2000-01-13
申请人： Axel Haase , Peter M. Jakob , Claudia Hillenbrand , Dietbert Hahn
发明人： Axel Haase , Peter M. Jakob , Claudia Hillenbrand , Dietbert Hahn
IPC分类号： G01V300
CPC分类号： G01R33/5613 , G01R33/482 , G01R33/5615
摘要： In order to acquire data for an image representation which shows the spatial distribution of the magnetic resonance behavior of an object within a selected localized region, the relevant localized region is arranged in a stationary magnetic field and is subjected to a sequence of high frequency pulses and pulses of magnetic field gradients in different spatial directions, such that a succession of magnetic resonance signals appears. These signals are read out by scanning under the influence of a read gradient and are used as sets of data for the filling of the K-space. In accordance with the invention, at least two different sequences of high frequency pulses and magnetic field gradient pulses are used, which differ in at least one of the features of the signal creation responsible for different aspects of the image quality. These sequences are executed one after another in time, with the magnetic resonance signals read out for the different sequences being collated in different bands of the K-space.
摘要翻译：为了获取图像表示的数据，该图像表示显示选定的局部区域内的对象的磁共振行为的空间分布，相关的局部区域被布置在固定的磁场中并经受一系列的高频脉冲和不同空间方向的磁场梯度的脉冲，使得出现一系列磁共振信号。这些信号通过在读取梯度的影响下的扫描来读出，并被用作用于填充K空间的数据集合。根据本发明，使用至少两个不同的高频脉冲序列和磁场梯度脉冲，其在负责图像质量的不同方面的信号创建中的至少一个特征方面不同。这些序列在时间上一个接一个地执行，其中读出的不同序列的磁共振信号被整理在K空间的不同频带中。

2. 发明申请

US20100034447A1 PARALLEL MRI INVOLVING DENSITY WEIGHTING OR ACQUISITION WEIGHTING 失效
标题翻译：涉及密度加权或采集权重的并行MRI
公开(公告)号：US20100034447A1
公开(公告)日：2010-02-11
申请号：US12161034
申请日：2007-01-04
申请人： Oliver Geier , Dietbert Hahn , Herbert Koestler
发明人： Oliver Geier , Dietbert Hahn , Herbert Koestler
IPC分类号： G06K9/00
CPC分类号： G01R33/5611 , G01R33/482 , G01R33/56545
摘要： In a method for magnetic resonance imaging, k-space is sampled using density weighted data acquisition or acquisition weighted data acquisition, with at least one region of k-space being intentionally undersampled with respect to the Nyquist criterion. Reconstruction of the MR image is performed using a parallel imaging method, with the influence in the reconstructed image of the missing k-space data, as a result of the undersampling, being reduced.
摘要翻译：在用于磁共振成像的方法中，使用密度加权数据采集或采集加权数据采集来对k空间进行采样，其中k空间的至少一个区域有意地相对于奈奎斯特准则被欠采样。使用并行成像方法进行MR图像的重建，由于欠采样的结果，丢失的k空间数据的重建图像的影响减小。

3. 发明授权

US08184879B2 Parallel MRI involving density weighting or acquisition weighting 失效
标题翻译：并行MRI涉及密度加权或采集加权
公开(公告)号：US08184879B2
公开(公告)日：2012-05-22
申请号：US12161034
申请日：2007-01-04
申请人： Oliver Geier , Dietbert Hahn , Herbert Koestler
发明人： Oliver Geier , Dietbert Hahn , Herbert Koestler
IPC分类号： G06K9/00 , G01V3/00
CPC分类号： G01R33/5611 , G01R33/482 , G01R33/56545
摘要： In a method for magnetic resonance imaging, k-space is sampled using density weighted data acquisition or acquisition weighted data acquisition, with at least one region of k-space being intentionally undersampled with respect to the Nyquist criterion. Reconstruction of the MR image is performed using a parallel imaging method, with the influence in the reconstructed image of the missing k-space data, as a result of the undersampling, being reduced.
摘要翻译：在用于磁共振成像的方法中，使用密度加权数据采集或采集加权数据采集来对k空间进行采样，其中k空间的至少一个区域有意地相对于奈奎斯特准则被欠采样。使用并行成像方法进行MR图像的重建，由于欠采样的结果，丢失的k空间数据的重建图像的影响减小。

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