US 11,815,577 B2
Parallel MR imaging using wave-encoding
Zechen Zhou, Eindhoven (NL); and Peter Bornert, Eindhoven (NL)
Assigned to Koninklijke Philips N.V., Eindhoven (NL)
Appl. No. 17/432,921
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Feb. 18, 2020, PCT No. PCT/EP2020/054159
§ 371(c)(1), (2) Date Aug. 21, 2021,
PCT Pub. No. WO2020/173749, PCT Pub. Date Sep. 3, 2020.
Claims priority of provisional application 62/809,779, filed on Feb. 25, 2019.
Claims priority of application No. 19170549 (EP), filed on Apr. 23, 2019.
Prior Publication US 2022/0155396 A1, May 19, 2022
Int. Cl. G01V 3/00 (2006.01); G01R 33/483 (2006.01); G01R 33/561 (2006.01); G01R 33/565 (2006.01)
CPC G01R 33/4835 (2013.01) [G01R 33/5611 (2013.01); G01R 33/56563 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of magnetic resonance (MR) imaging of an object placed in an examination volume of a MR device comprising a plurality of coils, the method comprising:
generating MR signals by subjecting the object to an imaging sequence using the plurality of coils;
acquiring, using the plurality of coils, MR signal profiles in a superposition of a Cartesian readout employing a linear readout magnetic field gradient and one or more sinusoidally varying magnetic field gradients along one or more phase encoding directions so that each MR signal profile is acquired in presence of a temporally constant magnetic field gradient along a readout direction and the one or more sinusoidally varying magnetic field gradients along the one or more phase encoding directions; and
reconstructing, by a reconstruction processor, an MR image taking a modulation scheme of the one or more sinusoidally varying magnetic field gradients into account,
wherein a frequency of modulation of the sinusoidally varying magnetic field gradients is varied during acquisition of each MR signal profile.