Method and system for detecting movement of at least one part of a subject

US12324686B2 · kind B2 · utility

Assignee

• Siemens Healthineers AG · DE

Inventors

• Peter Speier · Erlangen, DE
• Patrick Liebig · Erlangen, DE

Key dates

• Filing date: May 11, 2022
• Grant date: Jun 10, 2025
• Expiry date: Apr 1, 2043

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/36
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Movement detection of at least one part of a subject located inside a magnetic resonance imaging (MRI) device is provided. A method includes performing an MR scan by executing a programmable MR sequence protocol. The sequence protocol includes MR excitation pulses to be transmitted via a parallel transmit system and receive time windows for receiving magnetic resonance signals via a receive system. The MR sequence protocol includes, in between the MR excitation pulses, the generation of multi-channel pilot tone signals that are transmitted via the parallel transmit system and an RF transmit coil array. During transmission of the multi-channel pilot tone signals, the pilot tone signals are received with an RF receive coil array. The received pilot tone signals are forwarded via the receive system to an analyzing unit, and movement of at least one part of the subject is determined by analyzing the received pilot tone signal.