Methods for the imaging of shear rate in moving fluids

Details Methods for the imaging of shear rate in moving fluids Methods for the imaging of shear rate in moving fluids

1993-12-27

1994-12-27

Smith, Ruth S.

Surgery

Truss

Pad

324306, 324309, A61B 5055

Patent

active

053755987

ABSTRACT:
A shear rate imaging method uses magnetic resonance to detect the distribution of velocities within a subject. Distributions are measured responsive to at least two different field-of-views. Differences of the velocity distribution obtained with one field-of-view and the second field-of-view are computed to give a component of shear rate. The method can be used to obtain velocity measurements in any of three mutually orthogonal directions responsive to field-of-view shifts in as many as three mutually orthogonal directions to give a total of nine shear rate components. Data for each component can be acquired independently or data acquisition can be multiplexed to reduce data acquisition requirements.

REFERENCES:
patent: 4714081 (1987-12-01), Dumoulin et al.
patent: 5022397 (1991-06-01), Dumoulin
patent: 5233298 (1993-08-01), Dumoulin
"Simultaneous Acquisition of Phase Contrast Angiograms and Stationary Tissue Images with Hadamard Encoding of flow Induced Phase Shifts", Dumoulin et al., Journal of Magnetic Resonance Imaging, vol. 1, pp. 399-404, 1991.

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