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Method For Correcting Susceptibility-Induced Image Artifacts In MRI After Prospective Motion Correction
专利权人:
Julian Maclaren
发明人:
Julian Maclaren,Rainer Boegle,Maxim Zaitsev
申请号:
US13639869
公开号:
US20130102879A1
申请日:
2010.04.14
申请国别(地区):
US
年份:
2013
代理人:
摘要:
A method of magnetic resonance imaging (MRI) is characterized by the following steps: a) forming a susceptibility model (305, 403) of at least a part of a subject (S), including an imaged body part (203), by using a structural magnetic resonance image (301) of the part of the subject (S) and/or prior knowledge of the anatomy of the subject (S) b) computing susceptibility-induced field deviations (404) present in the imaging volume at each time MR signals are acquired using the susceptibility model (305, 403) and the knowledge of a monitored position and monitored orientation (401) of the part of the subject (S) at that time c) using the information about the susceptibility-induced field deviations (404) derived in b) for image correction (406), in particular correction of image distortions and/or intensity modulations. The quality of magnetic resonance imaging of moving subjects is thereby improved.
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