1- or 2-directional MRI blood flow mapping sequences are an integral part of standard MR protocols for diagnosis
and therapy control in heart diseases. Recent progress in rapid MRI has made it possible to acquire
volumetric, 3-directional cine images in reasonable scan time. In addition to flow and velocity measurements
relative to arbitrarily oriented image planes, the analysis of 3-dimensional trajectories enables the visualization
of flow patterns, local features of flow trajectories or possible paths into specific regions. The anatomical and
functional information allows for advanced hemodynamic analysis in different application areas like stroke risk
assessment, congenital and acquired heart disease, aneurysms or abdominal collaterals and cranial blood flow.
The complexity of the 4D MRI flow datasets and the flow related image analysis tasks makes the development of
fast comprehensive data exploration software for advanced flow analysis a challenging task. Most existing tools
address only individual aspects of the analysis pipeline such as pre-processing, quantification or visualization, or
are difficult to use for clinicians. The goal of the presented work is to provide a software solution that supports
the whole image analysis pipeline and enables data exploration with fast intuitive interaction and visualization
methods. The implemented methods facilitate the segmentation and inspection of different vascular systems.
Arbitrary 2- or 3-dimensional regions for quantitative analysis and particle tracing can be defined interactively.
Synchronized views of animated 3D path lines, 2D velocity or flow overlays and flow curves offer a detailed insight
into local hemodynamics. The application of the analysis pipeline is shown for 6 cases from clinical practice,
illustrating the usefulness for different clinical questions. Initial user tests show that the software is intuitive to
learn and even inexperienced users achieve good results within reasonable processing times.