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US 2006/0188138 A1Published application
Reconstruction of the current flow in a vessel system
AssigneeKoninklijke Philips Electronics N.V.
InventorsThomas Kohler, Michael Grass
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AssigneeKoninklijke Philips Electronics N.V.
InventorsThomas Kohler, Michael Grass
Estimating the term…
The invention relates to a method of reconstructing the current flow, or the bolus arrival times, in a vessel system (6). For the sections (i) of the vessel tree (6), bolus arrival times (mi) are measured, for example in connection with an injection of contrast medium. Based on this measured data, linear programming is then used to calculate model bolus arrival times (ti), which, on the one hand, through minimization of the function E=Σ|mi−ti|, are as close as possible to the measured data, and, on the other, by adherence to the boundary condition Δi=ti−tp(i)≧0, ensure the monotony of the propagation, wherein p(i) is the index of the vessel section in front of vessel section (i). Preferably, as smooth as possible a progression is compelled by means of an additional minimization of Em=Σ|ti″|
A data processing device (3) for reconstructing the current flow in a vessel system (6), comprising a memory (4) with measurement data (mi) describing an observed progressive propagation of a medium in the vessel system (6), wherein the data processing device (3) is equipped to reconstruct, from the measurement data, a model propagation (ti) of a medium within the vessel system in such a way that, for the vessel system:
A method of reconstructing the current flow in a vessel system (6), comprising the following steps:
Dependencies are inferred from the claim text.