MEAN DIFFUSIVITY MEASUREMENT CORRECTIONS FOR GRADIENT NON-LINEARITY
摘要
<p>Techniques for correcting gradient non-linearity bias in mean diffusivity measurements by MRI systems are shown and include minimal number of spatial correction terms to achieve sufficient error control using three orthogonal diffusion weighted imaging (DWI) gradients. The correction is based on rotation of system gradient nonlinearity tensor into a DWI gradient frame where spatial bias of b-matrix is described by its Euclidian norm. The techniques obviate time consuming multi-direction acquisition and noise-sensitive mathematical diagonalization of a full diffusion tensor for medium of arbitrary anisotropy.</p>
申请公布号
EP2845023(A1)
申请公布日期
2015.03.11
申请号
EP20130784497
申请日期
2013.05.03
申请人
THE REGENTS OF THE UNIVERSITY OF MICHIGAN
发明人
CHENEVERT, THOMAS, L.;ROSS, BRIAN, D.;MALYARENKO, DARIYA, I.