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Leveraging Patient-Specific Simulated Angiograms to Characterize Cerebral Aneurysm Hemodynamics using Computational
V Chivukula1, R White1, A Shields2,3
1Biomedical Engineering, Florida Institute of Technology.
Summary
This study introduces a simulated angiogram approach (SAA) using computational fluid dynamics to provide quantitative blood flow data for cerebral aneurysm treatment. This enables better clinical decisions and improved patient outcomes.
Area of Science:
- Neurointerventional radiology
- Medical imaging
- Computational fluid dynamics
Background:
- Cerebral aneurysms (CA) affect 6% of the US population, with rupture causing hemorrhagic stroke.
- Current endovascular therapy (ET) for CA lacks quantitative hemodynamic data, contributing to a 30% failure rate.
- Computational fluid dynamics (CFD) offers quantitative insights but faces challenges in clinical application due to boundary condition acquisition.
Purpose of the Study:
- To present a novel CFD-based Simulated Angiogram Approach (SAA) for extracting quantitative hemodynamic parameters in CA.
- To correlate contrast agent transport with hemodynamic conditions using time-density curves (TDC).
- To provide clinicians with real-time, physics-informed quantitative data for improved treatment decisions.
Main Methods:
- Developed a CFD-based Simulated Angiogram Approach (SAA).
- Resolved blood flow physics and contrast agent interaction.
- Extracted quantitative hemodynamic parameters and generated time-density curves (TDC) at multiple points.
Main Results:
- The SAA successfully correlates contrast transport (TDC) with underlying hemodynamic conditions.
- Quantitative parameters like washout and local flow changes in CA anatomies were extracted.
- Demonstrated the ability to provide crucial hemodynamic data during interventions.
Conclusions:
- The SAA offers invaluable quantitative hemodynamic data for cerebral aneurysm interventions.
- Integrating blood flow physics with contrast transport analysis enhances clinical decision-making.
- This approach has the potential to improve endovascular therapy outcomes for cerebral aneurysms.
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