Invention Grant
- Patent Title: Method for compensating for eddy current fields in magnetic resonance images
- Patent Title (中): 用于补偿磁共振图像中的涡流场的方法
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Application No.: US13218435Application Date: 2011-08-25
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Publication No.: US08854037B2Publication Date: 2014-10-07
- Inventor: Thorsten Feiweier
- Applicant: Thorsten Feiweier
- Applicant Address: DE München
- Assignee: Siemens Aktiengesellschaft
- Current Assignee: Siemens Aktiengesellschaft
- Current Assignee Address: DE München
- Agency: Lempia Summerfield Katz LLC
- Priority: DE102010035539 20100826
- Main IPC: G01V3/00
- IPC: G01V3/00 ; G01R33/565

Abstract:
A method for compensating for eddy current fields in magnetic resonance images acquired using a magnetic resonance apparatus is provided. A global component of the eddy current fields corresponding to a zeroth order and a first order is compensated globally using a change in control parameters of at least one device of the magnetic resonance apparatus that is suitable for compensating for the global components (e.g., a reference oscillator and/or a gradient coil). In order to correct local higher-order eddy current fields in a volume of interest characterized by a prominent point, the residual eddy current fields remaining following compensation of the global component are developed around the point. Correction values for the control parameters are determined from the zeroth- and/or first-order local components of the development and are taken into account in the control of the magnetic resonance apparatus for magnetic resonance image acquisition.
Public/Granted literature
- US20120217966A1 METHOD FOR COMPENSATING FOR EDDY CURRENT FIELDS IN MAGNETIC RESONANCE IMAGES Public/Granted day:2012-08-30
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