3D Ultrasound Anatomical Surface Modeling Without Data Point Collection
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Solution Overview
Problem
Existing methods for creating three-dimensional anatomical models of heart chambers rely heavily on data point collection, which can be cumbersome and require additional clinical procedures.
Innovation Solution
A method for generating anatomical surface models using three-dimensional ultrasound images, involving segmentation of blood pool/tissue boundaries through iterative evolution of an initial boundary using a level set-based partial differential equation, solved with an additive operator scheme in parallel dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If data point collection methods are used to create three-dimensional anatomical models, then model accuracy can be achieved, but the process becomes cumbersome and requires additional clinical procedures
Solution Approach 1:
The patent replaces the mechanical/manual data point collection process with an automated image processing system. The level set method automatically segments and reconstructs three-dimensional anatomical models from two-dimensional ultrasound images, eliminating the need for manual catheter-based data point collection and reducing procedural complexity while maintaining model accuracy
2Measurement precision
If extensive data point collection is performed, then accurate anatomical models can be generated, but the time required for model creation increases
Solution Approach 1:
The patent performs preliminary image processing and segmentation during the imaging phase itself. By implementing automated level set-based segmentation that operates on collected ultrasound images without requiring subsequent manual data point collection, the system prepares the anatomical model data in advance, significantly reducing the time required for final model generation while maintaining accuracy
3Reliability
If manual data point collection methods are used, then anatomical models can be created, but additional clinical procedures are required
Solution Approach 1:
The patent creates a multi-functional system that performs both imaging and model generation within a single integrated platform. The level set-based automated segmentation system enables the same imaging equipment to produce both diagnostic images and three-dimensional anatomical models, eliminating the need for separate data collection procedures and reducing overall system complexity
Data Source
AI summary
An electroanatomical mapping system models an anatomical (e.g., endocardial) surface bounding an anatomical volume (e.g., a heart chamber). The system receives a three-dimensional ultrasound image containing the volume, segments a blood pool/tissue boundary of the volume in the image, and outputs the segmented boundary as a model of the anatomical surface. In embodiments, segmentation includes solving a level set-based partial differential equation in three dimensions to iteratively expand from an initial boundary to a final boundary. In particular, an additive operator scheme, or other semi-implicit scheme, can be used to solve the partial differential equation, advantageously with all dimensions being solved in parallel.