System For The Determination Of Vessel Geometry And Flow Characteristics
First Claim
1. Investigation system for the determination of the vessel geometry and the flow characteristics in a vessel system, comprising:
- an X-ray device (10) for generating differently oriented projections of the vessel system;
a data processing unit (20) that is coupled to the X-ray device (10) and adapted to reconstruct the three-dimensional model of the vessel geometry and the flow characteristics based on a temporal sequence of differently oriented X-ray projections (Pl, Pk, PN) of the vessel system generated during the passage of a bolus (31) of contrast agent, wherein the reconstruction of the vessel geometry is at least partially based on the imaged contrast agent dynamics caused by the bolus.
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Abstract
The invention relates to a method and a system for the simultaneous reconstruction of the three-dimensional vessel geometry and the flow characteristics in a vessel system. According to one realization of the method, vessel segments (41) of a parametric models are fitted to differently oriented X-ray projections (Pl, Pk, PN) of the vessel system that are generated during the passage of a bolus of contrast agent, wherein the fitting takes the imaged contrast agent dynamics and physiological a priori knowledge into account. In an alternative embodiment, the vessel geometry is reconstructed progressively along each vessel, wherein a new segment of a vessel is added based on the continuity of the vessel direction, vessel radius and reconstructed contrast agent dynamics.
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Citations
13 Claims
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1. Investigation system for the determination of the vessel geometry and the flow characteristics in a vessel system, comprising:
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an X-ray device (10) for generating differently oriented projections of the vessel system; a data processing unit (20) that is coupled to the X-ray device (10) and adapted to reconstruct the three-dimensional model of the vessel geometry and the flow characteristics based on a temporal sequence of differently oriented X-ray projections (Pl, Pk, PN) of the vessel system generated during the passage of a bolus (31) of contrast agent, wherein the reconstruction of the vessel geometry is at least partially based on the imaged contrast agent dynamics caused by the bolus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for the determination of the vessel geometry and the flow characteristics in a vessel system, comprising the following steps:
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a) injecting a bolus (31) of contrast agent into the vessel system; b) generating a temporal sequence of X-ray projections (Pl, Pk, PN) of the vessel system during the passage of said bolus (31) from different directions; c) reconstructing the three-dimensional vessel geometry and the flow characteristics at least partially based on the imaged contrast agent dynamics caused by the bolus. - View Dependent Claims (13)
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Specification