Ramona Lorenz1, Jelena Bock1, Jan
Korvink2, Michael Markl1
1Dept. of Diagnostic Radiology,
visualization of time resolved 3D phase contrast data plays an important role
for the analysis of flow characteristics inside the vessels of interest.
However, phase offset errors due to gradient field distortions caused by
three major effects including eddy currents, concomitant gradients, and
gradient field non-linearities can severely distort the measured
three-directional velocities. This results in distortion of streamlines and
particle traces which might lead to incorrect flow pattern visualization. The
application of correction methods for all three phase offset errors resulted
in an improvement of 3D streamline visualisation.