Patient-Specific 3D Vascular Model from 2D Angiograms
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Solution Overview
Problem
In vascular treatments, such as Percutaneous Transluminal Coronary Angioplasty (PTCA), clinicians face challenges in interpreting angiograms due to the discrepancy between flattened schematic graphs of coronary arteries and actual vascular structures, especially given the variability in coronary trees across patients.
Innovation Solution
A method and system that generate a patient-specific 3D model of vascular structures by adapting a generic 3D model using 2D X-ray image data from angiograms, allowing for precise matching of the model's parameters like branching structure, orientation, and curvature to create a representative patient-specific model without the need for volumetric imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a flattened schematic graph of coronary arteries is used to document vascular treatment findings, then the documentation process is simplified, but the accuracy and intuitiveness of matching vascular features deteriorate due to the discrepancy from actual 3D vascular structures
Solution Approach 1:
The patent transforms the traditional 2D flattened schematic graph into a 3D model of coronary arteries. This dimensional upgrade allows the model to represent the actual spatial structure and anatomy of coronary vessels, enabling clinicians to accurately match angiographic image features with the corresponding 3D anatomical structures, thereby resolving the mismatch problem inherent in 2D representations
Solution Approach 2:
The patent creates a patient-specific 3D copy of the coronary artery structure based on angiographic imaging data. This digital 3D replica accurately reproduces the unique anatomical features, branching patterns, and spatial configuration of the patient's coronary tree, allowing for precise feature identification and documentation without the limitations of generic 2D schematics
2Loss of time
If a generic 3D model of the body part is used, then the model can be quickly obtained without volumetric imaging, but the model does not accurately represent the patient's specific vascular structure
Solution Approach 1:
The patent uses a generic 3D model as a preliminary template that can be quickly obtained without requiring time-consuming volumetric imaging procedures. This pre-prepared model serves as an initial approximation that can then be refined by adapting its parameters to match the patient's specific anatomy derived from angiographic data, thus achieving both speed and accuracy
Solution Approach 2:
The patent transforms a generic 3D model into a patient-specific model by adjusting and adapting its geometric parameters. Through parameter optimization and modification based on angiographic imaging data, the model's vascular structure, branching patterns, and spatial configuration are customized to accurately represent the patient's unique anatomy, achieving high precision without volumetric imaging
Data Source
AI summary
An apparatus provides a patient specific 3D model of a body part. At least one 2D X-ray image including 2D X-ray image data of a vascular structure of a patient's body part is provided. A 3D model of the body part is provided, the 3D model including a 3D modelled vascular structure. At least one parameter commands an appearance of the 3D modelled vascular structure. The 3D modelled vascular structure is compared with the 2D X-ray image data of the vascular structure to determine the at least one parameter. The 3D model is updated as a function of the determined at least one parameter. A medical report is generated based on information determined from the 3D model.