公开(公告)号：US07078897B2

公开(公告)日：2006-07-18

申请号：US10345010

申请日：2003-01-15

申请人： Dmitriy A. Yablonskiy ,  Alexander L. Sukstanskii ,  Mark S. Conradi

发明人： Dmitriy A. Yablonskiy ,  Alexander L. Sukstanskii ,  Mark S. Conradi

IPC分类号： G01V3/00

CPC分类号： G01R33/56341

摘要： An MR method and system of determining elements of the apparent diffusion coefficient tensor in a material with plurality of anisotropic structural units that can be too small to be resolved by direct imaging. MR data is acquired with MR system including pulse sequences, the sequences including imaging or spectroscopy pulse sequences with a series of embedded diffusion-sensitizing gradient waveforms with different gradient strength applied to the material. A nonlinear function of a b-value corresponding to the pulse sequence is defined and the acquired MR data is processed according to defined nonlinear function. Images/maps of the components of the tensor of apparent diffusion coefficients, corresponding to anisotropic structural units, based on the processed MR data, are created. A method of evaluating of the geometrical parameters of lung airways is also described.