US 11,841,414 B2
Respiratory detection transceiver
JianMin Wang, Shenzhen (CN); Qiu Yi Zhang, Shenzhen (CN); Markus Vester, Nuremberg (DE); and Jia Wen, Shenzhen (CN)
Assigned to Siemens Healthcare GmbH, Erlangen (DE)
Filed by Siemens Healthcare GmbH, Erlangen (DE)
Filed on Sep. 1, 2021, as Appl. No. 17/464,087.
Claims priority of application No. 202010908566.X (CN), filed on Sep. 2, 2020.
Prior Publication US 2022/0065968 A1, Mar. 3, 2022
Int. Cl. G01R 33/36 (2006.01); G01R 33/567 (2006.01); A61B 5/055 (2006.01)
CPC G01R 33/5676 (2013.01) [A61B 5/055 (2013.01); G01R 33/3635 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A magnetic resonance imaging (MRI) device configured to exert a high-frequency electromagnetic field on an object under test in a static magnetic field, and to reconstruct an image based on acquired magnetic resonance signals, the MRI device comprising:
a receiving coil comprising a plurality of receiving coil elements, the receiving coil being configured to receive magnetic resonance signals and to couple the magnetic resonance signals to a receiver; and
a coupler configured to be coupled with at least a first receiving coil element of the plurality of receiving coil elements of the receiving coil, the coupler being directionally coupled with the receiver, and the first receiving coil element being configured to receive a high-frequency electromagnetic wave signal through the coupler,
wherein the receiver is connected to the coupler, the receiver being configured to receive high-frequency electromagnetic wave signals reflected from the object under test, and
wherein a directional coupling between the coupler and the receiver is regulated (i) such that the first receiving coil element transmits the high-frequency electromagnetic wave signal to the object under test to detect a physiological movement signal of the object under test, and (ii) to reduce an attenuation of reflected high-frequency electromagnetic wave signals received by the first receiving coil element during a transmission from the coupler to the receiver.