公开(公告)号：WO2013046158A3

公开(公告)日：2013-06-13

申请号：PCT/IB2012055175

申请日：2012-09-28

Applicant: KONINKL PHILIPS ELECTRONICS NV

Inventor： PERKINS THOMAS

IPC: A61B5/055 ,  G01R33/38 ,  G01R33/383 ,  G01R33/48 ,  G01R33/50

CPC classification number: G01R33/4828 ,  A61B5/055 ,  A61B5/4244 ,  A61B5/4872 ,  G01R33/3808 ,  G01R33/383 ,  G01R33/50

Abstract: A probe unit (100) including a magnet (102, 103) generates a static magnetic B0 field in an examination region and a RF coil (105). An input-output module (201) includes a transmitter (203) which controls the RF coil (105) to excite resonance and cause echoes (210) and a receiver (204) which demodulates and digitizes the echoes (210). A data processing module (206) includes at least one processor programmed to calculate a T2 relaxation distribution plot from a digitized echo (210) train, calculate a first area under the fat peak on the T2 distribution plot, calculate a second area under a water peak on the T2 distribution plot, and normalize the first and second area to determine a fat-to-water ratio.

Abstract translation: 包括磁体（102,103）的探测单元（100）在检查区域和RF线圈（105）中产生静态磁场B0场。 输入 - 输出模块（201）包括控制RF线圈（105）激发共振并引起回波（210）的发射器（203）和解调和数字化回声（210）的接收器（204）。 数据处理模块（206）包括至少一个处理器，其被编程为从数字化回波（210）列中计算T2弛豫分布图，计算T2分布图上脂肪峰下的第一面积，计算水下第二面积 峰值在T2分布图上，并且将第一和第二区域归一化以确定脂肪与水的比例。

公开(公告)号：WO2011089551A3

公开(公告)日：2011-11-10

申请号：PCT/IB2011050230

申请日：2011-01-19

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  SENEGAS JULIEN ,  PERKINS THOMAS

Inventor： SENEGAS JULIEN ,  PERKINS THOMAS

IPC: G01R33/565

CPC classification number: G01R33/56536 ,  G01R33/286 ,  G01R33/5601 ,  G01R33/5615

Abstract: The invention relates to a method of determining a susceptibility gradient map, the method comprising acquiring (300) a magnetic resonance k- space dataset, said dataset comprising magnetic resonance echo data, wherein a recursive iteration is used to determine the susceptibility gradient map. Further, the invention relates to a method of determining a susceptibility gradient map, the method comprising acquiring a magnetic resonance k-space dataset, said dataset comprising magnetic resonance echo data, wherein the acquired dataset comprises magnetic resonance echo data of multiple echoes with different echo times, wherein a susceptibility gradient map is determined separately for each echo time resulting in a temporary susceptibility gradient map, wherein the method further comprises calculating a total susceptibility gradient map by combining all determined temporary susceptibility gradient maps.

Abstract translation: 本发明涉及一种确定磁敏度梯度图的方法，所述方法包括获取（300）磁共振k空间数据集，所述数据集包括磁共振回波数据，其中使用递归迭代来确定磁敏度梯度图。 此外，本发明涉及一种确定磁敏度梯度图的方法，所述方法包括获取磁共振k空间数据集，所述数据集包括磁共振回波数据，其中所获取的数据集包括具有不同回波的多个回波的磁共振回波数据 时间，其中针对导致临时磁敏度梯度图的每个回波时间分别确定敏感度梯度图，其中所述方法还包括通过组合所有确定的临时磁敏度梯度图来计算总磁敏度梯度图。