公开(公告)号：US10203387B2

公开(公告)日：2019-02-12

申请号：US14895242

申请日：2014-06-05

申请人： KONINKLIJKE PHILIPS N.V.

发明人： Zhaolin Chen ,  Miha Fuderer ,  Elizabeth Anne Moore ,  Gwenael Herigault ,  Kim Van De Ven

IPC分类号： A61B5/00 ,  A61B5/055 ,  G01R33/36 ,  G01R33/56 ,  G01R33/385 ,  G01R33/561

摘要： An object (10) in an examination volume of a MR device (1) is imaged with improved susceptibility weighted contrast. The imaging includes the steps of: a) generating at least two echo signals at different echo times by subjecting the object (10) to an imaging sequence of RF pulses and switched magnetic field gradients; b) acquiring the echo signals; c) repeating steps a) and b) for a plurality of phase encoding steps; d) reconstructing an intermediate MR image for each echo time from the acquired echo signals; and e) generating a susceptibility weighted MR image by computing, for each voxel of the susceptibility weighted MR image, a non-linear combination of the voxel values of the intermediate MR images at the respective image position. The non-linear combination emphasizes lower voxel magnitude values more than higher voxel magnitude values.