scholarly journals Automatic Segmentation of the Abdominal Aorta and Stent-Grafts

2021 ◽  
Vol 9 (3) ◽  
Author(s):  
Bertram Sabrowsky-Hirsch ◽  
◽  
Stefan Thumfart ◽  
Wolfgang Fenz ◽  
Richard Hofer ◽  
...  
Keyword(s):  
Abdominal Aorta ◽  
Automatic Segmentation ◽  
Stent Grafts

scholarly journals Tuberculous Aneurysm of the Abdominal Aorta: Endovascular Repair Using Stent Grafts in Two Cases

2000 ◽  
Vol 1 (4) ◽  
pp. 215 ◽  
Author(s):  
Wei Chiang Liu ◽  
Byung Kook Kwak ◽  
Kyo Nam Kim ◽  
Soon Yong Kim ◽  
Joung Joo Woo ◽  
...  
Keyword(s):  
Abdominal Aorta ◽  
Endovascular Repair ◽  
Stent Grafts

scholarly journals Staged endovascular stent grafts for concurrent mobile/ulcerated thrombi of thoracic and abdominal aorta causing recurrent spontaneous distal embolization

2008 ◽  
Vol 47 (1) ◽  
pp. 193-196 ◽  
Author(s):  
Wayne W. Zhang ◽  
Ahmed M. Abou-Zamzam ◽  
Mazen Hashisho ◽  
J. David Killeen ◽  
Christian Bianchi ◽  
...  
Keyword(s):  
Abdominal Aorta ◽  
Endovascular Stent ◽  
Stent Grafts ◽  
Distal Embolization ◽  
Thoracic And Abdominal

scholarly journals Endovascular Treatment of Spontaneous and Isolated Infrarenal Acute Aortic Syndrome with Unibody Aortic Stent-Grafts

2020 ◽  
Vol 44 (12) ◽  
pp. 4267-4274
Author(s):  
Felice Pecoraro ◽  
Ettore Dinoto ◽  
Domenico Mirabella ◽  
Francesca Ferlito ◽  
Arduino Farina ◽  
...  
Keyword(s):  
Endovascular Treatment ◽  
Stent Graft ◽  
Abdominal Aorta ◽  
Infrarenal Aorta ◽  
Acute Aortic Syndrome ◽  
Technical Success ◽  
Stent Grafts ◽  
Femoral Access ◽  
Persistent Symptoms

Abstract Introduction Spontaneous acute aortic syndrome (IAAS) is rarely localized in the infrarenal aorta. The endovascular approach is preferred over conventional open surgery with fewer complications. However, dedicated endovascular devices for IAAS treatment are unavailable. The aim was to report a large single-center experience using unibody stent-grafts to address IAAS. Methods From April 2016 to March 2019, a retrospective analysis of patients presenting spontaneous and isolated IAAS was performed. Patients addressed with the unibody stent-graft (AFX endovascular AAA system; Endologix Inc., Irvine, CA) were included in the study. Indications to IAAS treatment were persistent symptoms and/or dilated abdominal aorta (>3 cm). The measured outcomes were technical success; early outcomes (<30 days) including mortality, morbidity, symptoms recurrence, and endoleak occurrence; and late outcomes (>30 days) including mortality, symptoms recurrence, endoleak occurrence, stent-graft patency, and survival. Median follow-up was 23.77 ± 10 months. Results Twenty-one patients with IAAS were included. Indications to treatment were symptoms in 14 (67%) patients and dilated abdominal aorta in 7 (33%). Technical success was achieved in all cases. No perioperative mortality and 1 (4.8%) early femoral access complication was encountered. During the follow-up were registered 1 (4.8%) aortic unrelated death and 1 (4.8%) stent-graft limb stenosis. The 36 months estimated survival and freedom from reintervention were 92% (CI: 37–43; SE: 1.7) and 94% (CI: 37–44; SE: 1.7), respectively. Conclusions The endovascular treatment of IAAS with unibody stent-graft (AFX endovascular AAA system; Endologix Inc.) is safe and effective with promising mid-term outcomes. The use of unibody stent-grafts expands the endovascular indication, despite the usual anatomic IAAS features. Larger studies with longer follow-up are required to validate the outcomes of the reported technique.

A Laparoscopic Approach to the Abdominal Aorta for Thoracic Stent-Graft Deployment: Evaluation in a Porcine Model

2002 ◽  
Vol 9 (3) ◽  
pp. 344-349 ◽  
Author(s):  
Maxime Formichi ◽  
Jean-François Renier
Keyword(s):  
Thoracic Aorta ◽  
Stent Graft ◽  
Abdominal Aorta ◽  
Laparoscopic Approach ◽  
Infrarenal Aorta ◽  
Stent Grafts ◽  
Graft Placement ◽  
Stent Grafting ◽  
Laparoscopic Techniques ◽  
Totally Laparoscopic

Purpose: To develop laparoscopic techniques for aortic stent-graft placement as an alternative to the femoral approach. Methods: Endovascular stent-grafts were placed in 8 pigs via a totally laparoscopic retroperitoneal approach. After needle puncture, a guidewire was inserted into the abdominal aorta, followed by an 18-F sheath through which a Talent stent-graft was deployed in the descending thoracic aorta without aortic clamping. All the endovascular tools were inserted into the retroperitoneal area via the ports. After the sheath was withdrawn, hemostasis was achieved by suturing the aortic puncture under aortic cross-clamping. After sacrificing the animals, the thoracic aorta was removed to verify the position and deployment of the stent-grafts. Results: Seven (87.5%) of 8 procedures were successfully completed; the first animal died from hemorrhage due to inadvertent injury to the posterior infrarenal aortic wall. The accurate deployment and position of the stent-grafts were verified visually after sacrifice. Mean (± SD) procedural, implantation, and aortic cross-clamping times were 205 ± 56, 22 ± 9, and 30 ± 19 minutes, respectively. Mean blood loss was 120 ± 56 mL. Conclusions: Thoracic aortic stent-grafting using a laparoscopic approach to the infrarenal aorta is feasible. More studies will be required to define the place of combined endovascular and laparoscopic procedures as an alternative to the femoral surgical approach for stent-graft placement.

Adenosine-Induced Transient Cardiac Asystole Enhances Precise Deployment of Stent-Grafts in the Thoracic or Abdominal Aorta

1996 ◽  
Vol 3 (3) ◽  
pp. 270-272 ◽  
Author(s):  
Gerald Dorros ◽  
Joel M. Conn
Keyword(s):  
Blood Flow ◽  
Aortic Aneurysm ◽  
Abdominal Aorta ◽  
Endovascular Repair ◽  
Abdominal Aortic Aneurysms ◽  
Aortic Aneurysms ◽  
Aortic Flow ◽  
Stent Grafts ◽  
Abdominal Aortic ◽  
Second Period

Purpose: To present a cardiac asystole technique that assists in the accurate deployment of stent-grafts during endovascular repair of thoracic or abdominal aortic aneurysms. Technique: In the anesthetized patient, trial doses of intravenous adenosine are delivered until a ≥ 20-second period of asystole is recorded. The endograft procedure then proceeds until the device is ready for deployment. The predetermined dose of adenosine is administered, and the device is deployed during asystole. Adenosine-induced transient asystole has been utilized in 16 patients undergoing balloon-expandable endograft exclusion of 6 thoracic aortic and 10 abdominal aortic aneurysms. Asystole lasted for 20 to 30 seconds, during which time the devices were accurately deployed without interference from the aortic flow. There were no clinical sequelae of this technique in any patient. Conclusions: Pharmacologically induced transient asystole appears to be a safe maneuver to preclude endograft movement by systolic blood flow. The technique permits precise placement of balloon-expandable stent-grafts and is applicable to self-expanding devices as well. Interventionists may wish to incorporate adenosine-induced asystole into their aortic aneurysm exclusion procedures.

Automatic segmentation of the wire frame of stent grafts from CT data

2012 ◽  
Vol 16 (1) ◽  
pp. 127-139 ◽  
Author(s):  
Almar Klein ◽  
J. Adam van der Vliet ◽  
Luuk J. Oostveen ◽  
Yvonne Hoogeveen ◽  
Leo J. Schultze Kool ◽  
...  
Keyword(s):  
Automatic Segmentation ◽  
Stent Grafts ◽  
Wire Frame ◽  
The Wire ◽  
Ct Data

Endovascular stent-graft treatment for graft-vein anastomotic stenosis in haemodialysis patients with arteriovenous grafts

VASA ◽  
2015 ◽  
Vol 44 (6) ◽  
pp. 466-472 ◽  
Author(s):  
Chia-Hsun Lin ◽  
Yen-Yang Chen ◽  
Chai-Hock Chua ◽  
Ming-Jen Lu
Keyword(s):  
Risk Factors ◽  
Stent Graft ◽  
Target Lesion ◽  
Primary Patency ◽  
Anastomotic Stenosis ◽  
Secondary Patency ◽  
Endovascular Stent ◽  
Stent Grafts ◽  
Venous Anastomosis ◽  
Arteriovenous Grafts

Abstract. Background: In this study, we investigated the patency of endovascular stent grafts in haemodialysis patients with arteriovenous grafts, the modes of patency loss, and the risk factors for re-intervention. Patients and methods: Haemodialysis patients with graft-vein anastomotic stenosis of their arteriovenous grafts who were treated with endovascular stent-grafts between 2008 and 2013 were entered into this retrospective study. Primary and secondary patency, modes of patency loss, and risk factors for intervention were recorded. Results: Cumulative circuit primary patency rates decreased from 40.0 % at 6 months to 7.3 % at 24 months. Cumulative target lesion primary patency rates decreased from 72.1 % at 6 months to 22.0 % at 24 months. Cumulative secondary patency rates decreased from 81.3 % at 12 months to 31.6 % at 36 months. Patients with a history of cerebrovascular accident had a significantly higher risk of secondary patency loss, and graft puncture site stenosis jeopardised the results of stent-graft treatment. Conclusions: Our data can help to improve outcomes in haemodialysis patients treated with stent-grafts for venous anastomosis of an arteriovenous graft.

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