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https://www.readbyqxmd.com/read/27908450/the-learning-curve-effect-on-embolization-of-cerebral-dural-arteriovenous-fistula-single-center-experience-in-48%C3%A2-consecutive-patients
#1
D Le Foll, H Raoult, J C Ferré, F Naudet, D Trystram, J Y Gauvrit
BACKGROUND: Cerebral dural arteriovenous fistulas (DAVFs) are rare intracranial vascular lesions but can cause significant morbidity and mortality. OBJECTIVES: To analyze the effect of the center's experience on DAVF embolization efficacy and safety. METHODS: From May 2008 to October 2014, 57 embolization procedures were attempted on 48 patients (37 men and 11 women; median age: 63.9 years) for DAVF in a single center. DAVF presented with cortical venous reflux in 44/48 cases (91...
November 28, 2016: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/27903925/onyx-extravasation-during-embolization-of-a-brain-arteriovenous-malformation
#2
Hiroyuki Ikeda, Hirotoshi Imamura, Yuji Agawa, Yukihiro Imai, Shoichi Tani, Hidemitsu Adachi, Tatsuya Ishikawa, Yohei Mineharu, Nobuyuki Sakai
During Onyx embolization to treat brain arteriovenous malformation (AVM), carefully observing the penetration of Onyx to the nidus is important in order to avoid complications such as hemorrhage, ischemia, and difficulty with microcatheter removal. We encountered a case of Onyx extravasation during embolization of a cerebellar AVM confirmed by surgical resection and pathological analysis. The patient was a 44-year-old man with Spetzler-Martin grade I cerebellar AVM who underwent Onyx embolization prior to resection of the brain AVM...
November 30, 2016: Interventional Neuroradiology
https://www.readbyqxmd.com/read/27903195/dosimetric-effects-of-onyx-embolization-on-gamma-knife-arteriovenous-malformation-dose-distributions
#3
David J Schlesinger, Håkan Nordström, Anders Lundin, Zhiyuan Xu, Jason P Sheehan
OBJECTIVE Patients with arteriovenous malformations (AVMs) treated with Gamma Knife radiosurgery (GKRS) subsequent to embolization suffer from elevated local failure rates and differences in adverse radiation effects. Onyx is a common embolic material for AVMs. Onyx is formulated with tantalum, a high atomic number (Z = 73) element that has been investigated as a source of dosimetric uncertainty contributing to the less favorable clinical results. However, prior studies have not modeled the complicated anatomical and beam geometries characteristic of GKRS...
December 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27903193/three-dimensional-assessment-of-the-effects-of-high-density-embolization-material-on-the-absorbed-dose-in-the-target-for-gamma-knife-radiosurgery-of-arteriovenous-malformations
#4
Yoichi Watanabe, Divyajot Sandhu, Leighton Warmington, Sean Moen, Ramachandra Tummala
OBJECTIVE Arteriovenous malformation (AVM) is an intracranial vascular disorder. Gamma Knife radiosurgery (GKRS) is used in conjunction with intraarterial embolization to eradicate the nidus of AVMs. Clinical results indicate that patients with prior embolization tend to gain less benefit from GKRS. The authors hypothesized that this was partly caused by dosimetric deficiency. The actual dose delivered to the target may be smaller than the intended dose because of increased photon attenuation by high-density embolic materials...
December 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27847777/onyx-embolization-of-intracranial-pial-arteriovenous-fistula
#5
Hae-Min Kim, Jae-Hoon Cho, Ki-Hong Kim
Intracranial pial arteriovenous fistulas (AVFs) are rare cerebrovascular lesions consisting of one or more arterial connections to a single venous channel without an intervening nidus. Because of the location and high flow dynamics of these lesions, neurosurgeons may have a difficulty deciding between endovascular treatment and open surgical treatment. We report on a patient who underwent endovascular treatment with liquid embolic agent. A 50-year-old man with a decreased mental state and a tonic seizure event was brought to our hospital...
September 2016: Journal of Cerebrovascular and Endovascular Neurosurgery
https://www.readbyqxmd.com/read/27828804/onyx-embolization-as-single-rescue-treatment-for-ruptured-abdominal-aortic-aneurysm-after-evar
#6
Satoko Fujita, Tal Hörer, Artai Pirouzram, Asko Toivola, Göran Gruber, Thomas Larzon
A 76-year-old man who had undergone endovascular repair for an infrarenal aortic aneurysm, presented with a late type Ia endoleak 3 years after his operation. Deployment of an aortic cuff did not achieve a better seal at the proximal neck, and the aneurysm developed a rupture. We successfully treated the ruptured aneurysm using transcatheter Onyx embolization only. At 6-month and 1-year follow-ups with contrast-enhanced duplex scanning, no endoleak was seen and sac shrinkage was observed. Onyx is a relatively new liquid embolic agent that is slowly transformed into a solid state by contact with blood...
September 2016: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/27817050/ethylene-vinyl-alcohol-copolymer-as-embolic-agent-for-treatment-of-type-ii-endoleak-our-experience
#7
Anna Maria Ierardi, Camilla Micieli, Salvatore Alessio Angileri, Nicola Rivolta, Gabriele Piffaretti, Massimo Tonolini, Federico Fontana, Vittorio Miele, Luca Brunese, Gianpaolo Carrafiello
AIM: To evaluate safety, technical and clinical success of embolization of type II endoleak (T2 EL) using ethylene-vinyl alcohol copolymer as embolic agent alone or in combination with others materials. MATERIALS AND METHODS: From March 2007 to March 2015, 104 patients presented T2 EL during follow-up. A total of 21 patients met the criteria for treatment. T2 EL was treated with TAE (n = 18), DPSI (n = 10) or laparoscopic ligature of the inferior mesenteric artery (n = 1)...
November 5, 2016: La Radiologia Medica
https://www.readbyqxmd.com/read/27812721/assessment-of-facial-soft-tissue-profiles-based-on-lateral-photographs-versus-three-dimensional-face-scans
#8
Martin Fink, Ursula Hirschfelder, Veronika Hirschinger, Matthias Schmid, Caroline Spitzl, Andreas Detterbeck, Elisabeth Hofmann
OBJECTIVES: The purpose of this study was to compare two-dimensional (2D) lateral photographs versus three-dimensional (3D) face scans in analyzing facial profiles using Schwarz's concept of the jaw profile field (JPF) in its original 2D and in a modified 3D version. In addition, the distribution of the facial profile types described by Schwarz were examined. MATERIALS AND METHODS: Of 75 adult volunteers recruited specifically for this study, we obtained both photographs (Nikon D 300S; Nikon, Düsseldorf, Germany) and scans (FaceSCAN(3D) Scientific Photolab 60 Hz; 3D-Shape, Erlangen, Germany) in a standardized setting...
November 3, 2016: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/27811496/a-case-report-of-onyx-pulmonary-arterial-embolism-contributing-to-hypoxemia-during-awake-craniotomy-for-arteriovenous-malformation-resection
#9
Brian T Tolly, Jenna L Kosky, Antoun Koht, Laura B Hemmer
A healthy 26-year-old man with cerebral arteriovenous malformation underwent staged endovascular embolization with Onyx followed by awake craniotomy for resection. The perioperative course was complicated by tachycardia and severe intraoperative hypoxemia requiring significant oxygen supplementation. Postoperative chest computed tomography (CT) revealed hyperattenuating Onyx embolization material within the pulmonary vasculature, and an electrocardiogram indicated possible right heart strain, supporting clinically significant embolism...
November 2, 2016: A & A Case Reports
https://www.readbyqxmd.com/read/27798326/traumatic-arteriovenous-fistula-between-the-extracranial-middle-meningeal-artery-and-the-pterygoid-plexus-a-case-report-and-literature-review
#10
Jinlu Yu, Yunbao Guo, Zhongxue Wu, Kan Xu
The formation of a traumatic arteriovenous fistula (AVF) between the extracranial middle meningeal artery (MMA) and the pterygoid plexus (PP) is very rare, and understanding of this condition is limited. This paper reports the case of an 8-year-old who suffered minor injuries after a high fall four months prior to admission and showed good recovery after one month. However, the child gradually developed exophthalmos of the left eye and conjunctival redness one month prior to admission. Auscultation revealed an intracranial murmur near the left side of the face, in the temporal region...
October 26, 2016: Interventional Neuroradiology
https://www.readbyqxmd.com/read/27789619/coil-embolization-through-the-marathon-microcatheter-advantages-and-pitfalls
#11
Joel S Beckett, Gary R Duckwiler, Satoshi Tateshima, Viktor Szeder, Reza Jahan, Nestor Gonzalez, Fernando Vinuela
Due to technical limitations, small, distal, and tortuous intracranial pathology is sometimes out of reach of the current armamentarium of microcatheters designed for intracranial coil embolization. The Marathon microcatheter (Medtronic, Minneapolis, Minnesota, USA), designed specifically for the delivery of Onyx, is longer and more flexible than most coil delivery catheters. We report on nine patients (three with arteriovenous fistula, three with arteriovenous malformation, two with intracranial aneurysm, and one with tumor) where Marathon was used to deliver commercially available platinum coils...
October 27, 2016: Interventional Neuroradiology
https://www.readbyqxmd.com/read/27776896/transcatheter-arterial-embolization-with-ethylene-vinyl-alcohol-copolymer-onyx-for-the-treatment-of-hemorrhage-due-to-uterine-arteriovenous-malformations
#12
P-A Barral, M Saeed-Kilani, F Tradi, A Dabadie, J Izaaryene, J Soussan, J-M Bartoli, V Vidal
PURPOSE: The purpose of this study was to evaluate the effectiveness of ethylene vinyl alcohol copolymer (Onyx) as a single embolic agent for percutaneous arterial treatment of hemorrhage due to uterine arteriovenous malformations (AVMs). MATERIALS AND METHODS: Twelve women (mean age, 33 years) with metrorrhagia due to uterine AVMs who were treated by percutaneous arterial embolization using Onyx as a single embolic agent were retrospectively included. The diagnosis of uterine AVM was suggested by pelvic ultrasound and/or magnetic resonance imaging findings and further confirmed by angiography...
October 21, 2016: Diagnostic and Interventional Imaging
https://www.readbyqxmd.com/read/27751579/inducing-false-lumen-thrombosis-for-retrograde-type-a-aortic-dissection
#13
Rongjie Zhang, Jian Zhou, Jiaxuan Feng, Zhiqing Zhao, Junjun Liu, Zhenjiang Li, Rui Feng, Zaiping Jing
BACKGROUND: How to choose the proximal landing zone in endovascular interventions for a patient with a patent retrograde false lumen in dissection of the ascending aorta and aortic arch remains unclear. This study sought to report the safety and efficiency of inducing thrombosis of the retrograde false lumen to enhance a proximal landing zone to treat retrograde type A aortic dissection. METHODS: This study included 9 patients with retrograde type A aortic dissection treated with a 2-stage operation strategy between January 2015 and January 2016...
September 22, 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/27738575/onyx-embolization-of-a-meningioma-with-a-dysplastic-aneurysmal-anterior-cerebral-artery-vessel
#14
Daniel R Felbaum, Kyle Mueller, Ai-Hsi Liu, Rocco A Armonda
Preoperative embolization of meningiomas can be safely performed using a variety of embolic agents. Most commonly, the vascular supply from branches of the external carotid artery is the target of embolization. In our report, we detail the treatment of a patient with a parafalcine meningioma that received its supply via branches of the anterior cerebral artery. One of the feeder vessels appeared to contain a dysplastic aneurysmal dilatation of the vessel. Due to patient circumstances, embolization was performed using standard microcatheterization techniques to minimize intraoperative blood loss...
September 11, 2016: Curēus
https://www.readbyqxmd.com/read/27688294/long-term-results-of-intra-arterial-onyx-injection-for-type-ii-endoleaks-following-endovascular-aneurysm-repair
#15
L Ribé, C D Bicknell, R G Gibbs, N Burfitt, M P Jenkins, N Cheshire, M Hamady
PURPOSE: The aim of this paper is to report our experience of type II endoleak treatment after endovascular aneurysm repair with intra-arterial injection of the embolizing liquid material, Onyx liquid embolic system. METHODS: From 2005 to 2012, we performed a retrospective review of 600 patients, who underwent endovascular repair of an abdominal aortic aneurysm. During this period, 18 patients were treated with Onyx for type II endoleaks. PRINCIPAL FINDINGS: The source of the endoleak was the internal iliac artery in seven cases, inferior mesenteric artery in seven cases and lumbar arteries in four cases...
September 29, 2016: Vascular
https://www.readbyqxmd.com/read/27671278/incidental-occlusion-of-anterior-spinal-artery-due-to-onyx-reflux-in-embolization-of-spinal-type-ii-arteriovenous-malformation
#16
Joohyun Kim, Jang-Bo Lee, Tai-Hyoung Cho, Junseok W Hur
PURPOSE: Onyx embolization is one of the standard treatments for brain arteriovenous malformations (AVMs) and is a promising method for spinal AVMs as well. Its advantages have been emphasized, and few complications have been reported with Onyx embolization in spinal AVMs. Here, we report an incidental anterior spinal artery (ASA) occlusion due to Onyx reflux during embolization of a spinal type II AVM. METHODS: A 15-year-old boy presented with weakness in both upper and lower extremities...
September 26, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27660546/onyx-in-brain-arteriovenous-malformation-embolisation
#17
Hilwati Hashim, A Sobri Muda, Aida Abdul Aziz, Zuhanis Abdul Hamid
INTRODUCTION: Embolisation has long been used as an adjunct to surgical resection in the treatment of brain arteriovenous malformation (bAVM). The most commonly used embolic material, n-butylcyanoacrylate glue, requires experience and skill to handle its quick and unpredictable flow and polymerisation. A new liquid embolic agent, ethylene vinyl alcohol copolymer (Onyx), is less adhesive and polymerises slowly, which provides better control for radiologists performing embolisation. OBJECTIVE: To report our experience in embolisation using Onyx alone or in combination with histoacryl for bAVM embolisation in our tertiary referral centre...
July 2016: Malaysian Journal of Medical Sciences: MJMS
https://www.readbyqxmd.com/read/27652195/direct-tumor-embolization-of-sinonasal-unclassified-spindle-cell-sarcoma-with-onyx
#18
Ankit Kansal, Prateek Srinet, Richard Peter Manes
OBJECTIVES: To evaluate the use of a new tumor embolization agent, Onyx (Covidien, Dublin, Ireland), for the use of intraoperative embolization of a sinonasal unclassified spindle cell sarcoma. METHODS: A 45-year-old female patient presented to the rhinology clinic with a nasal mass. A biopsy revealed a highly vascular mass consistent with a sinonasal unclassified spindle cell sarcoma. Secondary to its extensive vascularity, the patient underwent preoperative transarterial embolization (TAE) before definitive resection...
July 2016: Journal of Neurological Surgery Reports
https://www.readbyqxmd.com/read/27646010/infiltrated-embolization-of-meningioma-with-dilute-cyanoacrylate-glue
#19
Hiroyuki Ohnishi, Shigeru Miyachi, Kenichi Murao, Ryo Hiramatsu, Kenkichi Takahashi, Hideyuki Ohnishi, Toshihiko Kuroiwa
We describe the efficacy and technical aspects of infiltrated preoperative embolization of meningioma by penetration of very dilute glue. In this method, a 13% n-butyl-cyanoacrylate (NBCA)-lipiodol mixture is injected extremely slowly from the middle meningeal artery (MMA) in a similar manner to plug and push injection of ethylene vinyl alcohol copolymer mixed with tantalum and dimethyl sulfoxide (Onyx(®)) after the tortuous side feeders are proximally embolized. The glue is infiltrated into small tumor arteries and extends to inaccessible feeders from deep meningeal arteries...
September 16, 2016: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/27633716/adjunct-to-embolize-the-high-flow-fistula-part-of-avm-using-double-lumen-balloon-catheter
#20
Xianli Lv, Xiheng Chen, Huijian Ge, Hongwei He, Chuhan Jiang, Youxiang Li
OBJECTIVE: The purpose of this study is to report our initial experience of Onyx embolization of the high-flow fistula part of AVM using a double-lumen balloon catheter. MATERIALS AND METHODS: Scepter C balloon catheter was utilized in 2 patients with AVMs associated with high-flow fistulas. Locations of the fistulas were anterior cerebral artery and middle cerebral artery (MCA). RESULTS: Onyx embolization was successful in 2 cases, resulting in eliminating the high-flow fistula part of the AVM...
September 12, 2016: World Neurosurgery
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