Mean Aneurysm Flow Amplitude Ratio Comparison between DSA and CFD
| Autor: | Daniel Ruijters, Vitor Mendes Pereira, Roel Hermans, T. Grünhagen, Hernán G. Morales, Fred van Nijnatten, Olivier Brina, Odile Bonnefous |
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| Rok vydání: | 2015 |
| Předmět: |
medicine.diagnostic_test
Computer science business.industry Optical flow Digital subtraction angiography Computational fluid dynamics medicine.disease Amplitude ratio Flow reduction body regions Aneurysm Flow (mathematics) Aneurysm treatment medicine cardiovascular diseases business Biomedical engineering |
| Zdroj: | Lecture Notes in Computer Science ISBN: 9783319245706 MICCAI (2) |
| DOI: | 10.1007/978-3-319-24571-3_58 |
| Popis: | The Mean Aneurysm Flow Amplitude ratio (MAFA-ratio) has been proposed to evaluate the efficacy of flow diverting stents during minimally invasive intracranial aneurysm treatment. A method has been described for calculating the MAFA-ratio on high frame-rate digital subtraction angiography (DSA) acquisitions using an optical flow algorithm. In this article we have generated computational fluid dynamics (CFD) simulations using six distinct aneurysms and computed the MAFA-ratios based on these data. Furthermore, the simulations have been used to create virtual angiograms, in order to calculate the MAFA-ratios using the DSA approach. An analysis of the MAFAratios generated by both methods shows that there is a monotone increasing relation between the DSA and CFD based ratios, albeit without a slope being identity. Overall, it can be concluded that the DSA-based ratio is a predictor for the magnitude of aneurysm flow reduction, i.e., for the efficacy of flow diverting stents. |
| Databáze: | OpenAIRE |
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