Brett Bowman

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A method of computing trajectories of objects by using velocity data, particularly as acquired with phase-contrast magnetic resonance (MR) imaging, is presented. Starting from a specified location at one time point, the method recursively estimates the trajectory. The effects of measurement noise and eddy current-induced velocity offsets are analyzed. When(More)
The ability to track motion from cine phase-contrast (PC) magnetic resonance (MR) velocity measurements was investigated using an in vitro model. A computer-controlled deformable phantom was used for the characterization of the accuracy and precision of the forward-backward and the compensated Fourier integration techniques. Trajectory accuracy is limited(More)
i EXECUTIVE SUMMARY Beginning in Gauteng in May 2008, escalated xenophobic violence resulted in the deaths, disability and displacement of migrant populations across South Africa. This discrimination and violence against migrants needs to be viewed in the context of broader structural or institutional discrimination, which in turn contributes to broader(More)
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