“…The aneurysm neck was straight in 80 patients (65%), angulated (a curved proximal aortic neck of <30 ) in 34 patients (27%), bulging (a small focal outpouching lesion) in 10 patients (7%), and tapered in 2 patients (1%). 8,10 The iliac artery aneurysms were unilateral in 24 patients (19%) and bilateral in 20 (16%), and 15 patients (12%) had large iliac artery aneurysms ($40 mm). The mean diameter of the iliac artery's landing zone was 10 6 2 mm (range, 6-12 mm).…”
Most Seal stent grafts were implanted successfully (even in cases with a physical status of grade IV or higher or a ruptured abdominal aortic aneurysm), had an appropriate reintervention rate, and were stable during the midterm follow-up. However, there was a high rate of type I endoleak, which may be related to the early device model that we used. Therefore, long-term radiologic follow-up is recommended for the early detection of stent graft migration or endoleaks.
“…The aneurysm neck was straight in 80 patients (65%), angulated (a curved proximal aortic neck of <30 ) in 34 patients (27%), bulging (a small focal outpouching lesion) in 10 patients (7%), and tapered in 2 patients (1%). 8,10 The iliac artery aneurysms were unilateral in 24 patients (19%) and bilateral in 20 (16%), and 15 patients (12%) had large iliac artery aneurysms ($40 mm). The mean diameter of the iliac artery's landing zone was 10 6 2 mm (range, 6-12 mm).…”
Most Seal stent grafts were implanted successfully (even in cases with a physical status of grade IV or higher or a ruptured abdominal aortic aneurysm), had an appropriate reintervention rate, and were stable during the midterm follow-up. However, there was a high rate of type I endoleak, which may be related to the early device model that we used. Therefore, long-term radiologic follow-up is recommended for the early detection of stent graft migration or endoleaks.
“…The protocol is an abridged version of the infrarenal AAA worksheet according to the EUROSTAR guidelines. 19 Figure 1.The locations of the measured diameters and length. The protocol is an abridged version of the infrarenal AAA worksheet according to the EUROSTAR guidelines.…”
Section: Methodsmentioning
confidence: 99%
“…The protocol is an abridged version of the infrarenal AAA worksheet according to the EUROSTAR guidelines. 19 The circled measurements are included in the abridged version: D2a: diameter 1 mm below the most distal main renal artery, D2c: diameter 15 mm below D2a, D3: maximum aneurysm diameter, and H4b: length from the most distal renal artery to left common iliac artery bifurcation.…”
An important determinant of successful endovascular aortic aneurysm repair is proper sizing of the dimensions of the aortic-iliac vessels. The goal of the present study was to determine the concurrent validity, a method for comparison of test scores, for EVAR sizing and planning of the recently introduced Simbionix PROcedure Rehearsal Studio (PRORS). Seven vascular specialists analyzed anonymized computed tomography angiography scans of 70 patients with an infrarenal aneurysm of the abdominal aorta, using three different sizing software packages Simbionix PRORS (Simbionix USA Corp., Cleveland, OH, USA), 3mensio (Pie Medical Imaging BV, Maastricht, The Netherlands), and TeraRecon (Aquarius, Foster City, CA, USA). The following measurements were included in the protocol: diameter 1 mm below the most distal main renal artery, diameter 15 mm below the lowest renal artery, maximum aneurysm diameter, and length from the most distal renal artery to the left iliac artery bifurcation. Averaged over the locations, the intraclass correlation coefficient is 0.83 for Simbionix versus 3mensio, 0.81 for Simbionix versus TeraRecon, and 0.86 for 3mensio versus TeraRecon. It can be concluded that the Simbionix sizing software is as precise as two other validated and commercially available software packages.
“…Figure 1 depicts the various types of metal ring and stent-grafts used for EVAR. In regard of the material, the device is formed by a metal-structure (i.e., stainless steel nitinol or cobalt-chromium alloys), while the graft is composed of polyester or polytetrafluoroethylene (ePTFE) fabric [ 20 , 21 ]. Based on the anatomical structure, stent-grafts can be divided in bifurcated (aorto-bi-iliac) or aorto-uni-iliac [ 20 ].…”
Section: Type Of Devicementioning
confidence: 99%
“…In regard of the material, the device is formed by a metal-structure (i.e., stainless steel nitinol or cobalt-chromium alloys), while the graft is composed of polyester or polytetrafluoroethylene (ePTFE) fabric [ 20 , 21 ]. Based on the anatomical structure, stent-grafts can be divided in bifurcated (aorto-bi-iliac) or aorto-uni-iliac [ 20 ]. Stent-grafts usually adopt a modular design with at least two component grafts: in detail two (bimodular) or three (trimodular) separate components, including an aortic bifurcated main body and one or two iliac limbs [ 20 , 22 ].…”
Endovascular aneurysm repair (EVAR) is a minimally invasive treatment proposed as an alternative to open repair in patients with abdominal aortic aneurysms. EVAR consists in a stent-graft placement within the aorta in order to exclude the aneurysm from arterial circulation and reduce the risk of rupture. Knowledge of the various types of devices is mandatory because some stents/grafts are more frequently associated with complications. CT angiography is the gold standard diagnostic technique for preprocedural planning and postprocedural surveillance. EVAR needs long-term follow-up due to the high rate of complications. Complications can be divided in endograft device-related and systemic complications. The purpose of this article is to review the CT imaging findings of EVAR complications and the key features for the diagnosis.
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