公开(公告)号：EP4027161A1

公开(公告)日：2022-07-13

申请号：EP21150639.9

申请日：2021-01-08

申请人： Koninklijke Philips N.V.

发明人： MS, Vidya ,  RUDRAPATNA, Umesh Suryanarayana ,  JAGANNATHA, Vijayananda ,  SRINIVASAN, Ashvin ,  NEELAVALLI, Jaladhar ,  THAZHACKAL, Sharun S ,  SARASWATHY, Suja

IPC分类号： G01R33/565 ,  G01R33/58

摘要： Proposed concepts thus aim to provide schemes, solutions, concept, designs, methods and systems pertaining to updating a magnetic field (Bo) map of a subject during a magnetic resonance imaging (MRI) examination or during image reconstruction. In particular, when a subject moves, the magnetic field inside the magnetic bore changes. As a result, any Bo map obtained prior to the movement of the subject may be inaccurate. Accordingly, an initial Bo map is updated to reflect changes in the Bo map caused by the movement of the subject. This can be achieved by determining a Bo map of the subject based on a Bo prediction model, instead of spending additional scanning time to acquire another Bo map.