System for the determination of vessel geometry and flow characteristics
First Claim
1. Investigation system for the determination of vessel geometry and flow characteristics in a vessel system, comprising:
- an X-ray device for generating differently oriented projections of a vessel system during a passage of a bolus of contrast agent therethrough, the projections including data representative of contrast agent dynamics within the vessel system;
a data processing unit adapted to receive data representative of at least some of the differently oriented projections from the X-ray device and adapted to reconstruct a three-dimensional model of a geometry and flow characteristics of the vessel system from received data generated in a single temporal sequence with the use of predetermined modeled contrast agent dynamics.
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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 (P1, 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.
192 Citations
28 Claims
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1. Investigation system for the determination of vessel geometry and flow characteristics in a vessel system, comprising:
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an X-ray device for generating differently oriented projections of a vessel system during a passage of a bolus of contrast agent therethrough, the projections including data representative of contrast agent dynamics within the vessel system; a data processing unit adapted to receive data representative of at least some of the differently oriented projections from the X-ray device and adapted to reconstruct a three-dimensional model of a geometry and flow characteristics of the vessel system from received data generated in a single temporal sequence with the use of predetermined modeled contrast agent dynamics. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for the determination of the vessel geometry and the flow characteristics in a vessel system, comprising:
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a) injecting a bolus of contrast agent into a vessel system; b) generating a temporal sequence of X-ray projections (P1, Pk, PN) of the vessel system during a passage of said bolus from different directions; c) reconstructing a three-dimensional vessel geometry and flow characteristics of at least a portion of the vessel system with the use of projections generated in a single temporal sequence and predetermined model contrast agent dynamics. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system for determining vessel geometry and flow characteristics in a vessel system, comprising:
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an input for receiving X-ray image data representative of a single temporal sequence of differently oriented projections of a vessel system during a passage of a bolus of contrast agent therethrough, the projections including data representative of contrast agent dynamics within the vessel system; a data processing unit adapted to reconstruct a three-dimensional model of a geometry and flow characteristics of the vessel system from the received data with the use of predetermined modeled contrast agent dynamics; and an output for outputting the reconstructed three-dimensional model. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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Specification