公开(公告)号：US20200088822A1

公开(公告)日：2020-03-19

申请号：US16618959

申请日：2018-06-08

申请人： KONINKLIJKE PHILIPS N.V.

发明人： Michel Paul Jurriaan Jurrissen ,  Arthur Filipe Nisti Grigoletto Borgonovi ,  Thomas Hendrik Rozijn

IPC分类号： G01R33/483 ,  G01R33/561 ,  G01R33/565

摘要： The invention relates to a method of MR imaging of an object (10) placed in an examination volume of a MR device (1). The method comprises the steps of: —generating MR signals by subjecting the object (10) to a number N of shots of a multi-echo imaging sequence comprising multi-slice RF pulses (21) for simultaneously exciting two or more spatially separate image slices, with a phase offset in the slice direction being imparted to the MR signals, wherein the phase offset is varied from shot to shot, —acquiring the MR signals, wherein the MR signals are received in parallel via a set of at least two RF coils (11, 12, 13) having different spatial sensitivity profiles within the examination volume, and—reconstructing a MR image for each image slice from the acquired MR signals using a parallel reconstruction algorithm, wherein the MR signal contributions from the different image slices are separated on the basis of the spatial encodings of the MR signals according to the spatial sensitivity profiles of the RF coils (11, 12, 13) and on the basis of the phase offsets attributed to the respective image slices and shots. Moreover, the invention relates to a MR device for carrying out this method as well as to a computer program to be run on a MR device.

公开(公告)号：US11112475B2

公开(公告)日：2021-09-07

申请号：US16618959

申请日：2018-06-08

申请人： KONINKLIJKE PHILIPS N.V.

发明人： Michel Paul Jurriaan Jurrissen ,  Arthur Filipe Nisti Grigoletto Borgonovi ,  Thomas Hendrik Rozijn

IPC分类号： G01R33/483 ,  G01R33/561 ,  G01R33/565

摘要： A method of magnetic resonance (MR) imaging of an object includes: generating MR signals by subjecting the object to a number N of shots of a multi-echo imaging sequence comprising multi-slice RF pulses for simultaneously exciting two or more spatially separate image slices, with a phase offset in the slice direction being imparted to the MR signals; acquiring the MR signals that are received in parallel via a set of at least two RF coils having different spatial sensitivity profiles; and reconstructing a MR image for each image slice from the acquired MR signals using a parallel reconstruction algorithm, wherein the MR signal contributions from the different image slices are separated on the basis of the spatial encodings of the MR signals according to the spatial sensitivity profiles of the RF coils and of the phase offsets attributed to the respective image slices and shots.