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Method for contrast-agent-free angiographic imaging in magnetic resonance tomography
专利权人:
Michael Deimling
发明人:
Michael Deimling
申请号:
US12645858
公开号:
US08571631B2
申请日:
2009.12.23
申请国别(地区):
US
年份:
2013
代理人:
摘要:
A method for contrast-agent-free non-triggered angiographic imaging in magnetic resonance tomography that includes the steps of (S1) 2D or 3D measurement of a bodily region having a flow of blood, using a flow-insensitive SSFP sequence, (S2) measurement of the same bodily region using a flow-sensitive SSFP sequence, (S3) registration of the measurement results obtained in steps S1 and S2 to one another, (S4) unweighted or self-weighted subtraction of the registered measurement result obtained in step S2from the registered measurement result obtained in step S1, (S5) execution of a 2D or 3D image correction of the image obtained in step S4by removing image distortions caused by gradient field inhomogeneities and/or magnetic basic field inhomogeneities, and (S6) representation of the angiogram obtained in step S5 in the form of an MIP or segmented 2D or 3D vessel tree representation.
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