Haemodynamic Assessment via 3D Vascular Reconstruction

The patent uses a 3D reconstruction algorithm that creates a complete vascular model by copying and integrating information from limited angiographic projections. The system reconstructs the full 3D geometry of the vessel tree, including portions not directly visible in the acquired images, by inferring missing segments from the available projection data and applying anatomical continuity assumptions.

The patent applies partial action by acquiring only the minimum necessary angiographic projections required to capture the region of interest, rather than obtaining complete coverage of the entire vessel tree. The 3D reconstruction algorithm then compensates for the limited data by inferring missing vascular segments through mathematical reconstruction and anatomical reasoning, achieving sufficient completeness for haemodynamic assessment without excessive imaging.

The patent replaces direct mechanical/measurement-based geometric acquisition with a computational reconstruction system. Instead of relying on multiple direct measurements from different angles, the system uses mathematical algorithms to reconstruct 3D geometry from limited 2D projections, substituting computational inference for physical measurement and achieving adequate geometric accuracy with reduced imaging.

The patent implements a unified 3D reconstruction framework that simultaneously handles multiple vessel segments and integrates them into a single coherent model. The reconstruction algorithm processes all available projection data through a common mathematical framework, automatically registering and aligning different vascular segments without requiring separate manual registration procedures for each vessel portion.