Importance of Different Correction Methods for Optimized 3D Visualization of 3-Directional MR Velocity Data

Ramona Lorenz¹, Jelena Bock¹, Jan Korvink², Michael Markl¹

3D 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.