US 12,345,791 B2
Self-navigation in three-dimensional magnetic resonance imaging
Jan Hendrik Wulbern, Hamburg (DE); and Tim Nielsen, Hamburg (DE)
Assigned to Koninklijke Philips N.V., Eindhoven (NL)
Appl. No. 16/982,724
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Mar. 21, 2019, PCT No. PCT/EP2019/057094
§ 371(c)(1), (2) Date Sep. 21, 2020,
PCT Pub. No. WO2019/180145, PCT Pub. Date Sep. 26, 2019.
Claims priority of application No. 18163244 (EP), filed on Mar. 22, 2018.
Prior Publication US 2021/0003653 A1, Jan. 7, 2021
Int. Cl. G06K 9/00 (2022.01); G01R 33/48 (2006.01); G01R 33/56 (2006.01); G01R 33/565 (2006.01); G01R 33/567 (2006.01); G06T 7/20 (2017.01); G06T 11/00 (2006.01)
CPC G01R 33/5676 (2013.01) [G01R 33/4826 (2013.01); G01R 33/5608 (2013.01); G01R 33/56509 (2013.01); G06T 7/20 (2013.01); G06T 11/006 (2013.01); G06T 2200/04 (2013.01); G06T 2207/10088 (2013.01); G06T 2207/30004 (2013.01); G06T 2210/41 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A medical imaging system comprising:
a processor; and
a tangible, non-transitory computer readable medium that stores machine executable instructions, which when executed by the processor, causes the processor to:
receive magnetic resonance imaging data descriptive of a subject, wherein the magnetic resonance imaging data is segmented into sequential data portions, wherein the magnetic resonance imaging data was acquired according to a three-dimensional magnetic resonance imaging protocol, wherein the three-dimensional magnetic resonance imaging protocol is configured to sample the magnetic resonance data within each of the sequential data portions in-plane using a rotating k-space sampling profile, wherein the three-dimensional magnetic resonance imaging protocol is configured to further sample the magnetic resonance data within each of the sequential data portions using a segmented phase encoding in a thru-plane direction, wherein the segmented phase encoding is varied as the rotating k-space sampling profile is rotated, thereby distributing k-space sampling within each of the sequential data portions in a quasi random fashion;
reconstruct a navigator image for each of the sequential data portions based on the k-space sampling within each of the sequential data portions according to the three-dimensional magnetic resonance imaging protocol, and
wherein the non-transitory computer readable medium further contains pulse sequence commands configured to acquire the magnetic resonance imaging data according to the three-dimensional magnetic resonance imaging protocol,
wherein execution of the machine executable instructions further causes the processor to control the magnetic resonance imaging system to
acquire the magnetic resonance imaging data using the pulse sequence commands, wherein the pulse sequence commands are configured to acquire the sequential data portions sequentially;
reconstruct each navigator image as each of the sequential data portions is acquired;
calculate a displacement vector field for each navigator image as each of the sequential data portions is acquired; and
modify the pulse sequence commands to compensate for subject motion detected in the displacement vector field as each of the sequential data portions is acquired.