A Numerical Preoperative Planning Model to Predict Arterial Deformations in Endovascular Aortic Aneurysm Repair

Annals of Biomedical Engineering
Hossein MohammadiGilles Soulez

Abstract

Endovascular aneurysm repair is rapidly emerging as the primary preferred method for treating abdominal aortic aneurysm. In this image-guided interventional procedure, to obtain the roadmap and decrease contrast injections, preoperative CT images are overlaid onto live fluoroscopy images using various 2D/3D image fusion techniques. However, the structural changes due to the insertion of stiff tools degrade the fusion accuracy. To correct the mismatch and quantify the intraoperative deformations, we present a patient-specific biomechanical model of the aorto-iliac structure and its surrounding tissues. The predictive capability of the model was evaluated against intraoperative data for a group of four patients. Incorporating the perivascular tissues into the model significantly improved the results and the mean distance between the real and simulated endovascular tools was 2.99 ± 1.78 mm on the ipsilateral side and 4.59 ± 3.25 mm on the contralateral side. Moreover, the distance between the deformed iliac ostia and their corresponding landmarks on intraoperative images was 2.99 ± 2.48 mm.

References

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Citations

Aug 24, 2019·International Journal of Computer Assisted Radiology and Surgery·Katharina BreiningerAndreas Maier
Oct 25, 2020·International Journal for Numerical Methods in Biomedical Engineering·Claire DupontPascal Haigron
Dec 3, 2021·International Journal for Numerical Methods in Biomedical Engineering·Stewart McLennanEric Therasse

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