公开(公告)号：US20130027037A1

公开(公告)日：2013-01-31

申请号：US13534112

申请日：2012-06-27

Applicant: Hui Xue ,  Yu Ding

Inventor： Hui Xue ,  Yu Ding

IPC: G01R33/48

CPC classification number: G01R33/5611 ,  G01R33/56509

Abstract: Parallel imaging magnetic resonance reconstruction is performed with temporal sensitivity. Rather than estimate the coil sensitivity once for each coil of an array, the coil sensitivity at different times is estimated. The movement of the patient may result in different sensitivities at different times. By using the time varying sensitivity in iterative, self-consistent, non-linear parallel imaging, real-time imaging may be provided with stable artifacts in view of increasing SNR even with higher reduction factors (e.g., 4-6).

Abstract translation: 平行成像磁共振重建以时间灵敏度进行。 不是对阵列的每个线圈估计线圈灵敏度，而是估计不同时间的线圈灵敏度。 患者的运动可能导致不同时间的不同灵敏度。 通过在迭代，自相一致的非线性并行成像中使用时变灵敏度，考虑到即使具有较高的减少因子（例如，4-6）也增加了SNR，可以提供稳定的伪像。

公开(公告)号：US20120087561A1

公开(公告)日：2012-04-12

申请号：US13248309

申请日：2011-09-29

Applicant: Christoph Guetter ,  Jens Gühring ,  Marie-Pierre Jolly ,  Arne Littmann ,  Manuela Rick ,  Michaela Schmidt ,  Hui Xue

Inventor： Christoph Guetter ,  Jens Gühring ,  Marie-Pierre Jolly ,  Arne Littmann ,  Manuela Rick ,  Michaela Schmidt ,  Hui Xue

IPC: G06K9/46

CPC classification number: G06T7/0083 ,  G06T7/12 ,  G06T7/174 ,  G06T2207/10016 ,  G06T2207/10072 ,  G06T2207/10116 ,  G06T2207/20104 ,  G06T2207/30004

Abstract: A method for identifying a region of interest within a time sequence of images includes acquiring a time sequence of images comprising a plurality of image frames. Image segmentation is performed to segment a region of interest (ROI) from within each of the plurality of image frames of the time sequence of images. Manual edits are received for the ROI within one or more of the plurality of image frames. The manual edits are propagated to other image frames of the plurality of images. An extent to which each of the manual edits are propagated to other image frames is dependent upon a transformation function or deformation field used to propagate the manual edits and a weighing factor that is influenced by a distance in time between the other image frames and the frames that have been manually edited.

Abstract translation: 用于识别图像的时间序列内的感兴趣区域的方法包括获取包括多个图像帧的图像的时间序列。 执行图像分割以从图像的时间序列的多个图像帧的每一个内分割感兴趣区域（ROI）。 对于多个图像帧中的一个或多个中的ROI，接收手动编辑。 手动编辑被传播到多个图像的其他图像帧。 每个手动编辑传播到其他图像帧的程度取决于用于传播手动编辑的变换函数或变形字段以及受其他图像帧和帧之间的时间距离的影响的称重因子 已经被手动编辑。

公开(公告)号：US20120078085A1

公开(公告)日：2012-03-29

申请号：US13246910

申请日：2011-09-28

Applicant: Hui Xue ,  Marie-Pierre Jolly ,  Xiaoguang Lu ,  Jens Gühring

Inventor： Hui Xue ,  Marie-Pierre Jolly ,  Xiaoguang Lu ,  Jens Gühring

IPC: A61B5/055 ,  A61B5/02

CPC classification number: A61B5/055 ,  A61B5/0263 ,  G01R33/5601 ,  G01R33/56366 ,  G01R33/56509 ,  G01R33/5659

Abstract: A method (100) of processing myocardial MR perfusion images that corrects imaging errors arising from myocardial motion and B-1 field inhomogeneity (115-135); segments the myocardium images (140, 145); and calculates perfusion measures that enable analysis of the segmented myocardium images (150).

Abstract translation: 一种处理心肌MR灌注图像的方法（100），其校正由心肌运动和B-1场不均匀性引起的成像误差（115-135）; 分割心肌图像（140,145）; 并计算能够分析分段心肌图像的灌注测量（150）。

公开(公告)号：US20110208039A1

公开(公告)日：2011-08-25

申请号：US13031321

申请日：2011-02-21

Applicant: Jens Guehring ,  Hui Xue ,  Sven Zuehlsdorff

Inventor： Jens Guehring ,  Hui Xue ,  Sven Zuehlsdorff

IPC: A61B5/055

CPC classification number: G01R33/56366 ,  G01R33/246 ,  G01R33/5601 ,  G01R33/5659

Abstract: Method of correcting cardiac perfusion MR imaging for inhomogeneities (430) caused by non-uniform receiver coil fields using proton density weighted images (410) and B-Spline Free-Form Deformation (425).

Abstract translation: 使用质子密度加权图像（410）和B样条自由形式变形（425），校正由不均匀接收器线圈场引起的不均匀性（430）的心脏灌注MR成像的方法。