Direct Nidal Ethyl Vinyl Alcohol Copolymer Embolization With Flow Reduction Techniques as a Primary Treatment for Intraosseous Mandibular Arteriolovenous Malformations

Object A dural arteriovenous fistula (DAVF) typically involves meningeal feeding arteries and can cause clinical symptoms ranging from tinnitus to rupture of draining cortical or parenchymal veins. Surgical treatment may be technically demanding. Ethylene vinyl alcohol (Onyx, ev3 Neurovascular) has several properties that make it potentially useful as a primary treatment agent for DAVF. Onyx is expected to be a permanent embolic agent. It should have a decreased risk of catheter retention when compared with other permanent embolic materials. Methods The authors report a series of six patients with symptomatic DAVF who were treated initially with transarterial Onyx embolization and other endovascular techniques. Results Five patients had complete occlusion of their DAVF noted on the follow-up angiogram obtained between 2 and 4 months. One patient had residual filling via a small arterial branch that was stable on follow-up angiography. None of the patients had worsening of neurological function. One case was complicated by a retained catheter fragment. Conclusions Transarterial Onyx embolization and other endovascular methods can angiographically obliterate DAVF. In some cases, embolization allowed occlusion of multiple arterial feeding arteries from a single arterial injection. Technically, the embolization was optimized when a microcatheter position immediately adjacent to the point(s) of fistulization was achieved.

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Polymer sulfoxides based on poly(vinyl alcohol) as effective catalysts of nucleophilic substitution reactions

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19872204 ◽

1987 ◽

Vol 52 (9) ◽

pp. 2204-2211 ◽

Cited By ~ 3

Author(s):

Hana Hrudková ◽

Pavel Čefelín ◽

Václav Janout

Keyword(s):

Nucleophilic Substitution ◽

Vinyl Alcohol ◽

Potassium Thiocyanate ◽

Poly Vinyl Alcohol ◽

Substitution Reactions ◽

Two Phase ◽

Ethyl Vinyl ◽

Nucleophilic Substitution Reactions ◽

Three Phase ◽

Poly Ethylene

Using the addition of alcohols to ethyl vinyl sulfoxide, a number of 2-alkoxyethyl ethyl sulfoxides were prepared, containing the following alkyls: methyl, ethyl, isopropyl, benzyl, and cyclohexyl. With a 10 mole % excess of alcohol the extent of the reaction was 70-95%. By a polymeranalogous reaction with poly(vinyl alcohol) and poly(ethylene-co-vinyl alcohol), copolymers poly[1-hydroxyethylene (74 mole %)-co-1-(2-ethylsulfinylethoxy)ethylene (26 mole %)] and poly[ethylene (62 mole %)-co-1-hydroxyethylene (35 mole %)-co-1-(2-ethylsulfinylethoxy)ethylene (3 mole %)] were prepared; the reaction with polymer alcohols requires the use of excess ethyl vinyl sulfoxide. These polymer sulfoxides were tested as catalysts of nucleophilic substitution reactions, using reactions of 1-bromooctane with sodium phenoxide, sodium iodide and potassium thiocyanate. They are more effective catalysts than polymer sulfoxides based on crosslinked poly(styrene) under the conditions of a two-phase (S-L) and three-phase (L-S-L) catalysis.

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Reducing Oxidation of Foods Through Antioxidant Active Packaging Based on Ethyl Vinyl Alcohol and Natural Flavonoids

Packaging Technology and Science ◽

10.1002/pts.992 ◽

2012 ◽

Vol 25 (8) ◽

pp. 457-466 ◽

Cited By ~ 34

Author(s):

Carol López-de-Dicastillo ◽

Davinson Pezo ◽

Cristina Nerín ◽

Gracia López-Carballo ◽

Ramón Catalá ◽

...

Keyword(s):

Vinyl Alcohol ◽

Active Packaging ◽

Ethyl Vinyl

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Effect of the mode of nanoclay inclusion on morphology development and rheological properties of nylon6/ethyl–vinyl-alcohol blend composites

Polymer ◽

10.1016/j.polymer.2017.08.032 ◽

2017 ◽

Vol 126 ◽

pp. 96-108 ◽

Cited By ~ 12

Author(s):

Jayita Bandyopadhyay ◽

Suprakas Sinha Ray ◽

Reza Salehiyan ◽

Vincent Ojijo ◽

Mary Khoza ◽

...

Keyword(s):

Rheological Properties ◽

Vinyl Alcohol ◽

Ethyl Vinyl ◽

Morphology Development

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Effect of gamma irradiation on the oxygen barrier properties in ethyl‐vinyl acetate/ethylene‐vinyl alcohol/ethyl‐vinyl acetate multilayer film

Journal of Applied Polymer Science ◽

10.1002/app.49361 ◽

2020 ◽

Vol 137 (44) ◽

pp. 49361 ◽

Cited By ~ 3

Author(s):

Samuel Dorey ◽

Fanny Gaston ◽

Nina Girard‐Perier ◽

Nathalie Dupuy ◽

Sylvain R.A. Marque ◽

...

Keyword(s):

Gamma Irradiation ◽

Vinyl Acetate ◽

Vinyl Alcohol ◽

Multilayer Film ◽

Barrier Properties ◽

Oxygen Barrier ◽

Ethyl Vinyl ◽

Ethylene Vinyl Alcohol ◽

Alcohol Ethyl

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Abstract No. 282 EE: Extra-CNS uses of ethyl vinyl alcohol co-polymer (Onyx) embolic. Ready for prime time in the periphery

Journal of Vascular and Interventional Radiology ◽

10.1016/j.jvir.2009.12.069 ◽

2010 ◽

Vol 21 (2) ◽

pp. S107

Author(s):

D. Lebowitz ◽

C.F. Gonsalves ◽

D.B. Brown

Keyword(s):

Vinyl Alcohol ◽

Prime Time ◽

Ethyl Vinyl

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Meningioma embolization with the pressure cooker technique using Squid 12

Interventional Neuroradiology ◽

10.1177/1591019917707328 ◽

2017 ◽

Vol 23 (4) ◽

pp. 441-443 ◽

Cited By ~ 4

Author(s):

Zoltán Szatmáry ◽

Jan Hillman ◽

Stephanos Finitsis

Keyword(s):

Surgical Resection ◽

Vascular Access ◽

Vinyl Alcohol ◽

Arteriovenous Malformations ◽

Embolic Agent ◽

Ethyl Vinyl ◽

Tumor Penetration ◽

Brain Arteriovenous Malformations ◽

Embolic Agents ◽

Liquid Embolic

Background Preoperative meningioma embolization may be performed with microparticles or liquid embolic agents. The pressure cooker technique (PCT) has recently been described for the embolization of brain arteriovenous malformations (AVMs). Case We present the case of a 73-year-old woman with a large frontal interhemispheric meningioma that was successfully preoperatively embolized with the PCT using Squid 12, a new ethyl-vinyl alcohol copolymer embolic agent. The PCT presents considerable advantages relative to conventional embolization techniques such as deeper and faster tumor penetration and embolization of tumors with difficult vascular access, and retrograde feeling of pial afferents may be achieved. Conclusions The use of the PCT with Squid 12 may potentially increase the effectiveness of meningioma embolization, increase tumor devascularization and improve outcomes of surgical resection.

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Catalogue reduction techniques

International Astronomical Union Colloquium ◽

10.1017/s0252921100074340 ◽

1978 ◽

Vol 48 ◽

pp. 389-390 ◽

Cited By ~ 1

Author(s):

Chr. de Vegt

Keyword(s):

Adjustment Process ◽

Proper Motions ◽

Measuring Process ◽

Aerial Photogrammetry ◽

Reduction Techniques ◽

Observational Technique ◽

The Common ◽

Astrometric Data

AbstractReduction techniques as applied to astrometric data material tend to split up traditionally into at least two different classes according to the observational technique used, namely transit circle observations and photographic observations. Although it is not realized fully in practice at present, the application of a blockadjustment technique for all kind of catalogue reductions is suggested. The term blockadjustment shall denote in this context the common adjustment of the principal unknowns which are the positions, proper motions and certain reduction parameters modelling the systematic properties of the observational process. Especially for old epoch catalogue data we frequently meet the situation that no independent detailed information on the telescope properties and other instrumental parameters, describing for example the measuring process, is available from special calibration observations or measurements; therefore the adjustment process should be highly self-calibrating, that means: all necessary information has to be extracted from the catalogue data themselves. Successful applications of this concept have been made already in the field of aerial photogrammetry.

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