Spatio-temporal changes and migration of stent grafts after endovascular aortic aneurysm repair

Mattes, Julian; Steingruber, Iris; Netzer, Michael; Fritscher, Karl D.; Kopf, H; Jaschke, Werner; Schubert, Rainer

doi:10.1016/j.ics.2005.03.223

Cited by 8 publications

(8 citation statements)

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“…The long-term durability of these stent grafts is affected by the stresses and hemodynamic forces applied to them, and may be reflected by the movements of the stent graft itself during the cardiac cycle. Late stent graft failure is a serious complication in endovascular repair of aortic aneurysms [16,28,54,80,88,100], such as the formation of endoleaks (blood flow into the aneurysm sac) that can result in aneurysm expansion and rupture [81,82,106]. Better understanding of the motion characteristics of stent grafts will likely be beneficial for designing future devices.…”

Section: Clinical Contextmentioning

confidence: 99%

“…However, due the need for reintervention it does not have a significant advantage over open repair on the long term [53,27]. Late stent graft failure is therefore a serious complication in endovascular repair of aortic aneurysms [16,28,54,80,88,100]. Examples are metal fatigue, stent graft migration [80,70], and the formation of endoleaks [82,106].…”

Section: Clinical Contextmentioning

confidence: 99%

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Segmentation and motion estimation of stent grafts in abdominal aortic aneurysms

Klein¹

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Section: Clinical Contextmentioning

confidence: 99%

Section: Clinical Contextmentioning

confidence: 99%

Segmentation and motion estimation of stent grafts in abdominal aortic aneurysms

Klein¹

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“…30 Several papers deal with the segmentation of an AAA, either focusing on the technical side or compare different commercial In our previous work 10, 41 we proposed and implemented quantitative measures to determine the migration of a stentgraft with respect to the spinal canal. In (Mattes et al 2005) 10 we evaluated our approach on thoracic stent-grafts. We investigated the robustness of the procedure in (Mattes et al 2006).…”

Section: Related Work and Backgroundmentioning

confidence: 99%

“…[7][8][9] Beside the relative mobile anatomical structures of the abdomen (e.g., the aneurysm itself), there is also a need for a fixed reference system, which represents the spinal canal. 10 The description shall allow to identify disease patterns corresponding to a high probability of a dangerous progress of disease for the patient, for instance, to identify a strong bending leading to a kink coming with a limb occlusion. Thus, the description comes with a prediction of future complications and disease progression.…”

Section: Introductionmentioning

confidence: 99%

Quantification of the migration and deformation of abdominal aortic aneurysm stent grafts

Mattes¹,

Steingruber

Netzer³

et al. 2006

SPIE Proceedings

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The endovascular repair of an abdominal aortic aneurysm is a minimal invasive therapy which has been established during the past 15 years. A stent-graft is placed inside the aorta in order to cover the weakened regions of its wall. During a time interval of one or more years the stent-graft can migrate and deform with the risk of the occlusion of one of its limbs or of the rupture of the aneurysm. In this work we developed several strategies to quantify the migration and deformation in order to assess the risk coming with these movements and especially to characterize appearing complications by them. We calculated the rigid movement of the stent-graft and the aorta relative to the spinal canal. For this purpose, firstly, we rigidly registered the spinal canals, extracted for the different points in time, in order to establish a fixed reference system. All objects have been segmented first and surface points have been determined before applying a rigid and non-rigid point set registration algorithm. The change in the residual error after the registration of the stent-graft with an increasing number of degrees of freedom indicates the amount of change in the stent-graft's morphology. We investigated a sample of 9 patients all of which have been treated with the same kind of stent device (Zenith, Cook, Bloomington, Ind). Two cases could be clearly distinguished by the quantified parameters: a high global migration and a strong reduction of the residual error after nonrigid registration. In both cases, a strong bending of one of the parts of the respective stent-graft could be confirmed by a 3D visualization after its registration. The complications in both cases have been detected by the examination of clinical experts only by means of the images acquired one year later.

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“…Late stent graft failure is therefore a serious complication in endovascular repair of aortic aneurysms (Cao et al, 2009;Demirci et al, 2009;Jacobs et al, 2003;Li & Kleinstreuer, 2006;Mattes et al, 2005;Roos et al, 2005). Examples are metal fatigue, stent graft migration (Koning et al, 2006;Li & Kleinstreuer, 2006), and the formation of endoleaks (Lu et al, 2008;Stavropoulos & Charagundla, 2007).…”

Section: Introductionmentioning

confidence: 99%

Motion Calculations on Stent Grafts in AAA

Klein¹,

Renema²,

Vliet³

et al. 2011

Diagnosis, Screening and Treatment of Abdominal, Thoracoabdominal and Thoracic Aortic Aneurysms

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Spatio-temporal changes and migration of stent grafts after endovascular aortic aneurysm repair

Cited by 8 publications

References 8 publications

Segmentation and motion estimation of stent grafts in abdominal aortic aneurysms

Segmentation and motion estimation of stent grafts in abdominal aortic aneurysms

Quantification of the migration and deformation of abdominal aortic aneurysm stent grafts

Motion Calculations on Stent Grafts in AAA

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