title: Comparison of the strain field of abdominal aortic aneurysm measured by magnetic resonance imaging and stereovision: a feasibility study for prediction of the risk of rupture of aortic abdominal aneurysm.
abstract: The prediction of the risk of rupture of abdominal aortic aneurysm (AAA) is a complex problem. Currently the criteria to predict rupture of abdominal aortic aneurysms are aneurysm diameter and growth rates. It is generally believed that study of the wall strain distribution could be helpful to find a better decision criterion for surgery of aortic aneurysms before their rupture. The wall strain distribution depends on many biological and biomechanical factors such as elastic properties of the aorta, turbulent blood flow, anatomy of the aorta, presence of thrombus or not and so on. Recently, numerical simulations to estimate rupture-potential have received many attentions. However, none of the medical imaging tools for screening and monitoring of AAAs were studied in terms of mechanical behavior and experimentally to demonstrate their capability to measure relevant variables. The aim of this study was to develop a metrological approach for deployment testing of the ability of techniques for measuring local in-vitro deformations based on comparison of stereovision and MRI. In this paper, we present the implementation approach and results of the study based on cylindrical phantoms with or without AAA representing, respectively, healthy and unhealthy artery. Through this study, an experimental device was developed for the behavior study of AAA during a cardiac cycle. The results show that the stereovision techniques used in laboratory is well suited and is qualitatively and quantitatively equivalent with MRI measurements.
authors: Laboratoire d'électronique, informatique et image, UMR CNRS 6306, Université de Bourgogne site d'Auxerre, route des plaines de l'Yonne, 89000 Auxerre, France.
authors: Yufei
authors: Y
authors: Wang
authors: Laboratoire d'électronique, informatique et image, UMR CNRS 6306, Université de Bourgogne site d'Auxerre, route des plaines de l'Yonne, 89000 Auxerre, France; IUT Dijon-Auxerre, route des plaine de l'Yonne, 89000 Auxerre, France.
authors: David
authors: D
authors: Joannic
authors: GMed Tech, Galway-Mayo Institute of Technology, Galway, Ireland.
authors: Patrick
authors: P
authors: Delassus
authors: Laboratoire d'électronique, informatique et image, UMR CNRS 6306, Faculté de Médecine, Université de Bourgogne, 7 bd Jeanne d'Arc, 21079 Dijon Cedex, France.
authors: Alain
authors: A
authors: Lalande
authors: Laboratoire d'électronique, informatique et image, UMR CNRS 6306, Université de Bourgogne site d'Auxerre, route des plaines de l'Yonne, 89000 Auxerre, France.
authors: Patrick
authors: P
authors: Juillion
authors: Laboratoire d'électronique, informatique et image, UMR CNRS 6306, Université de Bourgogne site d'Auxerre, route des plaines de l'Yonne, 89000 Auxerre, France; IUT Dijon-Auxerre, route des plaine de l'Yonne, 89000 Auxerre, France. Electronic address: jffont@iut-dijon.u-bourgogne.fr.
authors: Jean-François
authors: JF
authors: Fontaine
mesh_terms: D017544:Aortic Aneurysm, Abdominal / Q000175:diagnosis* / Q000503:physiopathology; D001019:Aortic Rupture / Q000175:diagnosis* / Q000503:physiopathology; D001696:Biomechanical Phenomena; D001794:Blood Pressure; D005240:Feasibility Studies; D006801:Humans; D008279:Magnetic Resonance Imaging; D008954:Models, Biological; D019047:Phantoms, Imaging; D012306:Risk; D018570:Risk Assessment; D012307:Risk Factors
keywords: Abdominal aorta aneurysm; Aorta phantom; MRI; Measurement of strain fields; Metrology in medical imaging; Stereovision