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SYSTEM AND METHOD FOR LOCALIZED PROCESSING OF QUANTITATIVE SUSCEPTIBILITY MAPS IN MAGNETIC RESONANCE IMAGING
专利权人:
The Medical College of Wisconsin, Inc.
发明人:
KOCH, Kevin,ANDERSON, Casey
申请号:
EP20160815201
公开号:
EP3313273(A1)
申请日:
2016.06.22
申请国别(地区):
欧洲专利局
年份:
2018
代理人:
摘要:
Systems and methods for quantitative susceptibility mapping ("QSM") using magnetic resonance imaging ("MRf") and a localized processing technique are described. A field-shift map is processed based on localized regions of local field perturbations. These localized field-shift regions are processed using established QSM algorithms, or using direct dipole inversion techniques, to compute regional susceptibility distributions from the localized field shift information. When the localized regions correspond to subvolumes of the field-shift map, local susceptibility maps can be generated and combined to form a composite quantitative susceptibility map. By computing regional susceptibility distributions based on localized field-shift information, residual streaking artifacts in the susceptibility map are constrained to the individual volumes from which they originate, thereby eliminating their propagation through the image,
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