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Parallel MRI with multi-echo Dixon water-fat separation and B0 distortion correction using regularized detection reconstruction
专利权人:
コーニンクレッカ フィリップス エヌ ヴェ
发明人:
デ ウェルト エルウィン,コペルマン スティフェン,ペータース ヨハネス マルティヌス
申请号:
JP2016517592
公开号:
JP6243522B2
申请日:
2014.06.05
申请国别(地区):
JP
年份:
2017
代理人:
摘要:
A method of MR imaging includes acquiring reference MR signal data from the object (10); deriving a B0 map from the reference MR signal data; adapting sensitivity maps according to the B0 map, which sensitivity maps indicate spatial sensitivity profiles of one or more RF receiving coils (11, 12, 13), to correct for geometric distortions of the sensitivity maps; acquiring imaging MR signal data from the object (10) via the one or more receiving coils (11, 12, 13) with sub-sampling of k-space; and reconstructing a MR image from the imaging MR signal data. Sub-sampling artifacts are eliminated using the adapted sensitivity maps. The reference MR signal data are acquired using a multi-point Dixon technique. A water image and a fat image are reconstructed from the imaging MR signal data using separate water and fat sensitivity maps. The water and fat images are preferably reconstructed using regularized SENSE.
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