发明名称 |
Accelerated MRI with nonlinear spatial encoding gradients |
摘要 |
In a method of magnetic resonance imaging, a set of nonlinear, mutually orthogonal magnetic gradient encoding fields are sequentially and separately generated in an imaging region [100]. Using multiple receiver coils having nonuniform sensitivity profiles, echo data representing signal intensities in the imaging region is sequentially acquired as the magnetic gradient encoding fields are sequentially generated [102]. A reconstructed image of the imaging region is computed from the acquired echo data [104], and the reconstructed image is then be stored and/or displayed on a display monitor [106]. |
申请公布号 |
US9229081(B2) |
申请公布日期 |
2016.01.05 |
申请号 |
US201013518096 |
申请日期 |
2010.12.22 |
申请人 |
Yale University |
发明人 |
Constable Robert T.;Stockmann Jason;Tam Lick-Kong;Galiana Gigi |
分类号 |
G01V3/00;G01R33/561;G01R33/385 |
主分类号 |
G01V3/00 |
代理机构 |
Lumen Patent Firm |
代理人 |
Lumen Patent Firm |
主权项 |
1. A method of parallel magnetic resonance imaging comprising:
a) sequentially and separately generating magnetic gradient encoding fields in an imaging region; b) sequentially acquiring echo data representing signal intensities; c) computing a reconstructed image from the acquired echo data; and d) displaying the computed image; wherein the sequentially acquired echo data corresponds to the sequentially generated magnetic gradient encoding fields; wherein multiple receiver coils are used to simultaneously acquire echo data at each instant in time; wherein the multiple receiver coils have corresponding nonuniform receiver coil sensitivity profiles; wherein the magnetic gradient encoding fields are nonlinear spatial gradient fields that are solutions to the Laplace equation; and wherein the magnetic gradient encoding fields approximate ideal gradient field shapes that are optimally complementary to spatial information provided by the receiver coil sensitivity profiles. |
地址 |
New Haven CT US |