US 12,228,635 B2
Motion tracking in magnetic resonance imaging using RADAR and a motion detection system
Daniel Wirtz, Hamburg (DE); Tim Nielsen, Hamburg (DE); and Christoph Leussler, Hamburg (DE)
Assigned to Koninklijke Philips N.V., Eindhoven (NL)
Appl. No. 17/045,163
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Mar. 29, 2019, PCT No. PCT/EP2019/057988
§ 371(c)(1), (2) Date Oct. 3, 2020,
PCT Pub. No. WO2019/192929, PCT Pub. Date Oct. 10, 2019.
Claims priority of application No. 18165812 (EP), filed on Apr. 5, 2018.
Prior Publication US 2021/0146158 A1, May 20, 2021
Int. Cl. G01S 13/86 (2006.01); A61N 5/10 (2006.01); G01R 33/28 (2006.01); G01R 33/48 (2006.01); G01R 33/567 (2006.01); G01S 13/88 (2006.01); G01S 17/894 (2020.01)
CPC G01S 13/86 (2013.01) [A61N 5/1049 (2013.01); G01R 33/283 (2013.01); G01R 33/4814 (2013.01); G01R 33/5673 (2013.01); G01S 13/88 (2013.01); A61N 2005/1055 (2013.01); G01S 17/894 (2020.01)] 20 Claims
OG exemplary drawing
 
1. An instrument, comprising:
a magnetic resonance imaging system, wherein the magnetic resonance imaging system is configured to acquire magnetic resonance imaging data from an imaging zone;
a subject support, wherein the subject support is configured to support at least a portion of a subject within the imaging zone, wherein the subject support comprises a support surface, wherein the support surface is configured to receive the subject, wherein the subject support comprises a plurality of radar sensors embedded below the support surface, wherein the plurality of radar sensors are configured as a radar array;
a radar system, wherein the radar system is configured to acquire a radar signal from the subject via the plurality of radar sensors of the radar array;
a motion detection system, wherein the motion detection system comprises at least one motion detection system sensor, wherein the at least one motion detection system sensor is distinct from the radar sensors, wherein the motion detection system is configured to acquire a movement signal via the at least one motion detection system sensor, wherein the movement signal is produced in response to movement by the subject, wherein the motion detection system is separate and distinct from the radar system, and wherein the movement signal is distinct from the radar signal;
a memory, wherein the memory is arranged to store machine executable instructions and pulse sequence commands;
a processor circuit, wherein the processor circuit is arranged to control the medical instrument,
wherein execution of the machine executable instructions causes the processor circuit to:
continuously receive the radar signal from the radar system;
continuously receive the movement signal from the motion detection system;
continuously calculate a combined motion signal from the radar signal and the movement signal; and
control the magnetic resonance imaging system with the pulse sequence commands to acquire the magnetic resonance imaging data, wherein the acquisition of the magnetic resonance imaging data is controlled using the combined motion signal.