{"number":"US12702300B2","kindCode":"B2","documentType":"grant","title":{"original":"Non-contact MRI in-bore motion sensing method using CW Doppler radar with band-pass filtering","english":"Non-contact MRI in-bore motion sensing method using CW Doppler radar with band-pass filtering"},"abstract":{"original":"Noncontact sensing of subject motion using Doppler radar within a magnetic resonance imaging (MRI) apparatus transmits a band-pass filtered continuous wave radio signal at a microwave frequency and receives a band-pass filtered reflected radio signal. The subject motion is detected from the received band-pass filtered reflected radio signal using a quadrature radio receiver with a software defined radio implementing Doppler radar. A first antenna, used for transmission and reception, is connected to the quadrature radio using band-pass filters and an RF coupler.…","english":"Noncontact sensing of subject motion using Doppler radar within a magnetic resonance imaging (MRI) apparatus transmits a band-pass filtered continuous wave radio signal at a microwave frequency and receives a band-pass filtered reflected radio signal. The subject motion is detected from the received band-pass filtered reflected radio signal using a quadrature radio receiver with a software defined radio implementing Doppler radar. A first antenna, used for transmission and reception, is connected to the quadrature radio using band-pass filters and an RF coupler.…"},"applicants":["The Board of Trustees of the Leland Stanford Junior University"],"inventors":["Wonje Lee","Greig C. Scott","John M. Pauly","Shreyas S. Vasanawala"],"filingDate":"2023-05-26","publicationDate":"2026-08-11","grantDate":"2026-08-11","verifiedWithOffice":true,"pdfUrl":"https://downloadpatent.com/pdf/US12702300B2.pdf","pages":{"en":"https://downloadpatent.com/patent/US12702300B2","zh-Hant":"https://downloadpatent.com/zh-Hant/patent/US12702300B2","ja":"https://downloadpatent.com/ja/patent/US12702300B2"}}