3D Vascular Sizing Tool for Real-Time FFR Lesion Assessment
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Solution Overview
Problem
Current methods for assessing coronary artery disease (CAD) severity lack efficient and accurate tools for quantifying vascular function along the length of vessels, leading to inadequate understanding of lesion impact on blood flow and suboptimal treatment decisions.
Innovation Solution
A system and method for creating a three-dimensional vascular model from medical images, calculating flow index values, and displaying both instantaneous and distal fractional flow reserve (FFR) values along the vessel, accompanied by a three-dimensional sizing tool and QR code sharing for enhanced vascular assessment and analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional vascular assessment methods are used, then the assessment process is simple, but the measurement precision of vascular function is insufficient
Solution Approach 1:
The patent segments the vascular assessment into multiple components: 3D vascular model generation from medical images, flow index calculation at multiple locations, and simultaneous display of multiple FFR values. This segmentation allows complex vascular function analysis to be broken down into manageable processing steps, improving measurement precision while organizing system complexity.
Solution Approach 2:
The patent transitions from traditional 2D vascular imaging to 3D vascular modeling, enabling comprehensive spatial analysis of vascular function. The 3D model allows calculation and display of flow indices at multiple locations along the vessel length, providing dimensional enhancement that improves measurement precision of vascular health assessment.
2Loss of information
If only single location FFR values are displayed, then the display is simple, but the information completeness about lesion impact is insufficient
Solution Approach 1:
The patent merges multiple FFR value displays (instantaneous and distal values at different locations) into a single integrated visualization interface. This combining of multiple information streams provides complete lesion impact assessment while maintaining display organization through systematic presentation of related parameters.
Solution Approach 2:
The display system is designed to universally present multiple types of vascular function data (FFR values, flow indices, 3D model visualizations) through a single interface. This multi-functional display capability ensures comprehensive information delivery while consolidating what would otherwise require multiple separate display systems.
3Measurement precision
If detailed vascular analysis is performed, then the diagnostic accuracy is improved, but the analysis time is increased
Solution Approach 1:
The system performs preliminary 3D vascular model generation and flow index calculations from medical images before clinical assessment. This preliminary processing prepares the vascular data in advance, enabling rapid retrieval and analysis of multiple FFR values during patient evaluation, thereby reducing actual analysis time while maintaining detailed diagnostic capability.
Data Source
AI summary
A three-dimensional (3D) sizing tool for cardiac assessment is disclosed. An example system may display a representation of a three-dimensional vascular model including a three-dimensional (3D) sizing tool that surrounds a portion of the three-dimensional vascular model, wherein the portion comprises a volume of the three-dimensional vascular model for which to determine a mapping of geometrical information to a length along the portion; display an interface for adjusting the 3D sizing tool, wherein an area along the interface corresponds to a length of the 3D sizing tool; receive input to adjust the length of the 3D sizing tool via the area along the interface; and adjust the length of the 3D sizing tool according to the input.