Method for phase contrast MR angiography, and arrangement for ca

Details Method for phase contrast MR angiography, and arrangement for ca Method for phase contrast MR angiography, and arrangement for ca

1996-08-07

1998-10-27

Arana, Louis M.

Electricity: measuring and testing

Particle precession resonance

Determine fluid flow rate

324307, G01V 300

Patent

active

058282157

ABSTRACT:
In a method and apparatus for phase contrast MR angiography, for topically resolved flow acquisition, bipolar flow coding gradients are activated before readout of nuclear magnetic resonance signals. By using flow coding gradients of different amplitudes in successive measurements within a pulse sequence, nuclear magnetic resonance signals are obtained that are differently sensitive to flow. A larger range of flow velocities can thereby be covered.

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"Three-dimensional Time-of-Flight MR Angiography: Applications in the Abdomen and Thorax," Lewin et al., Radiology, vol. 179 (1991), pp. 261-264 .

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