MOTION TRACKING IN MAGNETIC RESONANCE IMAGING USING RADAR AND A MOTION DETECTION SYSTEM

• Main Authors: LEUSSLER CHRISTOPH, NIELSEN TIM, WIRTZ DANIEL
• Format: Patent
• Language: Chinese; English
• Published: 19.01.2021
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTROTHERAPY; HUMAN NECESSITIES; HYGIENE; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MAGNETOTHERAPY; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; MEDICAL OR VETERINARY SCIENCE; PHYSICS; RADIATION THERAPY; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING; ULTRASOUND THERAPY

The invention provides for a medical instrument (100, 300, 400, 500) comprising a magnetic resonance imaging system (102). The medical instrument further comprises a subject support (120) with a support surface (121) configured for supporting at least a portion of the subject within an imaging zone (108). The subject support comprises a radar array (125) embedded below the support surface. The medical instrument further comprises a radar system (124) for acquiring a radar signal (144) from the subject. The medical instrument further comprises a motion detection system (122) configured for acquiring a movement signal (146). Execution of machine executable instructions (140) causes a processor (130) to: continuously (200) receive the radar signal; continuously (202) receive the movement signal; continuously (204) calculate a combined motion signal (148) from the radar system and the movement signal; and control (206) the magnetic resonance imaging system with the pulse sequence commandsto acquire the magnetic r