公开(公告)号：US20240329170A1

公开(公告)日：2024-10-03

申请号：US18616641

申请日：2024-03-26

申请人： Siemens Healthineers AG

发明人： Jan Bollenbeck

IPC分类号： G01R33/36 ,  G01R33/54

CPC分类号： G01R33/3628 ,  G01R33/543

摘要： A transmit device for a pilot tone signal with a plurality of discrete frequency components and a magnetic resonance tomograph with such a transmit device. The transmit device includes a frequency stabilization unit that is configured to keep constant a frequency difference between the plurality of frequency components.

公开(公告)号：US11982727B2

公开(公告)日：2024-05-14

申请号：US17897893

申请日：2022-08-29

申请人： Siemens Healthineers AG

发明人： Jan Bollenbeck ,  Peter Speier ,  Mario Bacher

IPC分类号： G01R33/565 ,  A61B5/055 ,  G01R33/36 ,  G01R33/567

CPC分类号： G01R33/56509 ,  A61B5/055 ,  G01R33/3692 ,  G01R33/5673 ,  G01R33/3621

摘要： A pilot tone signal generator, a magnetic resonance tomograph, a method for transmission of a synchronization signal, and a computer program product are disclosed. The pilot tone signal generator includes a receive unit for receipt of a synchronization signal of a system control unit of a magnetic resonance tomograph. The synchronization signal may include a clock signal, and the pilot tone signal generator is configured to emit a pilot tone signal as a function of the synchronization signal.

公开(公告)号：US20240329172A1

公开(公告)日：2024-10-03

申请号：US18611035

申请日：2024-03-20

申请人： Siemens Healthineers AG

发明人： Peter Speier ,  Jan Bollenbeck ,  Mario Bacher

IPC分类号： G01R33/54

CPC分类号： G01R33/54

摘要： A method for detection of a number of pilot tone signals, a magnetic resonance apparatus, and a computer program product are disclosed. The method includes receiving receive signals according to an MR sequence by an RF receive unit of an MR apparatus, wherein the receive signals include an MR signal and the number of PT signals. The number of PT signals each have a different pilot tone frequency. The number of PT signals are received according to the MR sequence in a number of PT receive time segments having a duration of at least tm, interrupted by pauses. The method further includes digitizing the receive signals by sampling with a first sampling frequency f1 and detecting the number of PT signals from the digitized receive signals by sampling the digitized receive signals with a second sampling frequency f2, wherein the second sampling frequency f2≥2/tm.