Evidential reconstruction of vessel trees from X-ray angiograms with a dynamic contrast bolus
AssigneeSiemens Corporate Research, Inc.
InventorKeith Michael Andress
Life of this patent
Estimating the term…
Abstract
A three dimensional reconstruction of vessel trees from rotational digital subtraction angiogram sequences is described. The goal of the process is to estimate the probability that each voxel contains a vessel using the projection data. The system utilizes x-ray angiographic equipment capable of producing rotational digital subtraction angiogram sequences. Reconstruction of the geometry of the vasculature is based on the projection images. The reconstructed geometry is then displayed on a screen or used for measuring specific physiological parameters. The Dempster-Shafer theory of evidence is used to combine information about location of the vessels from the different projections contained in the digital subtraction angiogram sequence.
Claims20
A system for evidential reconstruction of vessel trees from x-ray angiograms with a dynamic contrast bolus comprising:
- x-ray angiographic equipment means capable of producing x-ray angiograms;
- and,
- computer means connected to said x-ray angiographic equipment means;
- wherein said computer means comprises:
- acquisition means connected to said x-ray angiographic equipment means;
- reconstruction means connected to said acquisition means;
- and,
- display/measurement means connected to said reconstruction means.
A system for evidential reconstruction of vessel trees from x-ray angiograms with a dynamic contrast bolus comprising:
- x-ray angiographic equipment capable of producing x-ray angiograms;
- a computer connected to said x-ray angiographic equipment;
- and,
- a video display connected to said computer;
- wherein said computer comprises:
- an acquisition component connected to said x-ray angiographic equipment;
- a reconstruction component connected to said acquisition component;
- and,
- a display/measurement component connected to said reconstruction component.
A method for evidential reconstruction of vessel trees from x-ray angiograms with a dynamic contrast bolus comprising the steps of:
- utilizing x-ray angiographic equipment to produce xray angiograms;
- and,
- utilizing computer means connected to said x-ray angiographic equipment means;
- wherein utilizing said computer means comprises the steps of:
- acquiring a mask series of DSA;
- acquiring a contrast series of DSA;
- subtracting said mask series from said contrast series;
- creating a DSA sequence;
- recreating a geometry of vasculature, based on projection images gathered, by estimating probability of occupation over a voxel space.
Dependencies are inferred from the claim text.