Stents implanted to treat renal artery stenosis are vulnerable to stent fracture and thrombosis [1–3]. We hypothesize that the motion of the renal arteries during respiration is a possible cause of stent fracture or in-stent restenosis. However, the respiratory motion of the renal arteries and the kidneys is poorly understood. Using magnetic resonance imaging data we previously quantified the two-dimensional deformation of the renal arteries and demonstrated that respiration-induced kidney motion results in vessel bending near the ostia . In this study we quantified the complex three-dimensional motion of the renal arteries and kidneys over the respiratory cycle using magnetic resonance angiography data and imaged-based modeling methods. We provide quantitative information on anatomic changes to the renal arteries that may provide data to design improved pre-clinical, benchtop tests for renal stents.
Quantification of Three-Dimensional Motion of the Renal Arteries Using Image-Based Modeling Techniques
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Suh, GY, Choi, G, Draney Blomme, M, & Taylor, CA. "Quantification of Three-Dimensional Motion of the Renal Arteries Using Image-Based Modeling Techniques." Proceedings of the ASME 2007 Summer Bioengineering Conference. ASME 2007 Summer Bioengineering Conference. Keystone, Colorado, USA. June 20–24, 2007. pp. 715-716. ASME. https://doi.org/10.1115/SBC2007-176291
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