US 11,940,517 B2
MR imaging using Dixon-type water/fat separation with suppression of flow-induced leakage and/or swapping artifacts
Holger Eggers, Veldhoven (NL); and Christian Stehning, Hamburg (DE)
Assigned to Koninklijke Philips N.V., Eindhoven (NL)
Appl. No. 17/793,422
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Jan. 25, 2021, PCT No. PCT/EP2021/051542
§ 371(c)(1), (2) Date Jul. 18, 2022,
PCT Pub. No. WO2021/151805, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. 20154518 (EP), filed on Jan. 30, 2020.
Prior Publication US 2023/0038530 A1, Feb. 9, 2023
Int. Cl. G01R 33/48 (2006.01); G01R 33/561 (2006.01); G01R 33/563 (2006.01)
CPC G01R 33/4828 (2013.01) [G01R 33/5615 (2013.01); G01R 33/56316 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method of magnetic resonance (MR) imaging of a body of a patient placed in an examination volume of a MR device, the method comprising:
subjecting the body to an imaging sequence, which comprises at least one excitation RF pulse and switched magnetic field gradients, wherein a number of pairs of echo signals is generated at two different echo times (TE1, TE2) with different phase encodings to sample a region of k-space, and wherein the generation of each pair of echo signals is repeated during two or more different cardiac phases (AW1, AW2);
acquiring the echo signals from the body;
reconstructing phase images from the acquired echo signal data, wherein a phase image is reconstructed for each echo time and for each cardiac phase; and
reconstructing a final diagnostic image from the echo signal data using water/fat separation, wherein regions of at least one of flow or estimates of flow-induced phase errors are derived from the phase images to suppress or compensate for flow-induced leakage and/or swapping artifacts in the final diagnostic image.