发明名称 |
MRI WITH MOTION CORRECTION USING NAVIGATORS ACQUIRED USING A DIXON TECHNIQUE |
摘要 |
<p>The invention relates to a method of MR imaging of at least a portion of a body (10) placed in a main magnetic field Bo within the examination volume of a MR device. It is an object of the invention to enable MR imaging with reliable motion detection and high image quality. The method of the invention comprises the following steps: - subjecting the portion of the body (10) to an imaging sequence comprising one or more RF pulses and switched magnetic field gradients for acquiring imaging signals; - subjecting the portion of the body (10) to a navigator sequence applied at least once before, during, or after the imaging sequence, the navigator sequence comprising one or more RF pulses and switched magnetic field gradients controlled in such a manner that navigator signals are acquired by means of a single-point or multi-point Dixon technique; - deriving translation and/or rotation and/or shear data from the navigator signals, which translation and/or rotation and/or shear data reflect motion occurring within the body (10) during the acquisition of the imaging signals; - reconstructing a MR image from the imaging signals, wherein the translation and/or rotation and/or shear data are used for adapting the imaging sequence and/or for motion correction during reconstruction of the MR image. Moreover, the invention relates to a MR device (1) and to a computer program to be run on a MR device (1).</p> |
申请公布号 |
WO2013118040(A1) |
申请公布日期 |
2013.08.15 |
申请号 |
WO2013IB50929 |
申请日期 |
2013.02.04 |
申请人 |
KONINKLIJKE PHILIPS N.V.;PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH |
发明人 |
BECK, GABRIELE MARIANNE;NIELSEN, TIM;SIMONETTI, ARJAN WILLEM;HERIGAULT, GWENAEL HENRI;VISSER, MATHIJS |
分类号 |
G01R33/567;G01R33/48;G01R33/565 |
主分类号 |
G01R33/567 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|