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Flow measurement of incompressible fluid using divergence-free constraint
Flow measurement of incompressible fluid using divergence-free constraint
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机译:使用无散度约束的不可压缩流体流量测量
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摘要
A method and apparatus to reduce the noise in three- dimensional phase contrast magnetic resonance velocity measurements exploits the property that blood is incompressible and therefore the velocity field describing its flow must be divergence-free. The divergence-free condition can be incorporated by the projection operation on Hilbert space where the velocity measurements are projected onto the space of divergence-free velocity fields. The reduction of noise is achieved since the projection operation eliminates the noise component that is not divergence-free. Higher quality angiograms are produced due to the noise reduction in the velocity measurement signals.
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