Iliac Branch Device Movement During Cardiac Cycle (IBD-dynamics)
Iliac Branch Device Movement During Cardiac Cycle (IBD-dynamics)
The incidence of isolated common iliac artery (CIA) aneurysms is low, but in combination with
 an abdominal aortic aneurysm (AAA) they are found in approximately 20-40% of cases.
 Basically, two different endovascular strategies can be applied to treat a CIA aneurysm with,
 including 1. the coverage and 2. the preservation of blood flow to the internal iliac artery
 (IIA). Coil and coverage of the IIA is related to ischemic complications, including buttock
 claudication, erectile dysfunction and the more severe spinal and colonic ischemia. Iliac
 branched devices (IBD) have been developed to exclude CIA aneurysms preserving the IIA and
 currently three alternatives are on the market. Clinical results of these devices are
 promising but loss of patency is not uncommon. The major difference between the two devices
 is the IIA component. The Cook IBD uses a -non-dedicated IIA component, while in the GORE®
 EXCLUDER® Iliac Branch Endoprosthesis (Gore IBE device) a dedicated self expanding stent is
 used. Stresses and forces exerted onto the endograft by aortic pulsatility may have an effect
 on the durability and functioning of the endograft. Intermittent hinchpoints could also have
 an effect on stent integrity and stenosis. By evaluating endograft movement during the
 cardiac cycle (ECG-gated CTA) it is possible to assess the stress and force exerted onto the
 endograft. This might help gain insight into mechanisms underlying potential endograft
 failure, and aid procedural planning and the development of future devices with long-term
 durability.

 The choice for device is not part of this study.
Objectives:To compare the mobility of the hypogastic artery during the cardiac cycle before
 and six weeks after implantation of the Gore IBE device in conjunction with its dedicated
 self expandable Internal Iliac component (Sub-study A);and to quantitatively characterize the
 displacement of stents with regard to the main body and native IIA during the cardiac cycle
 on an implanted iliac branched endograft in conjunction with a non-dedicated IIA component
 (Cook IBD with Advanta V12 or Fluency) with those in conjunction with a dedicated self
 expandable Internal Iliac component (Gore IBE device). (Sub-study B) Study design: Sub-study
 A & B: Multicenter observational case studies Study population: Sub-study A: 15 prospectively
 included patients and sub-study B: 15 patients in each group that have been treated in the
 period October 2006 - July 2016.
Inclusion Criteria:

 -  Sub-study A. scheduled endovascular aneurysm repair using the Gore IBE device.

 -  Sub-study B. Patients that have been treated with an iliac branched device in the past
 in conjunction with either a dedicated IIA component (Gore IBE device) or
 non-dedicated IIA component (Cook IBD) and who are scheduled for follow-up imaging
 within the period July 2016-January 2017.

 Exclusion Criteria:

 -  No specific exclusion criteria. Patients will be treated according to the hospital's
 standard practice.